Ultralite under construction

[WestTexasS2K]

Some pics of 7evin and I working on the new 1 Lap car we thought it was a cool picture http://www.usa7s.com/aspnetforum/upload/1583072073_DSC01941.JPG

[Boxologist]

hoepfully a worthy successor to Mojo!

[slngsht]

cool... looking forward to seeing it. Looks like Mojo is sharing some secrets with her new cousin.

[BusaNostra]

I will take the one that fly---I mean the white one !!

[slngsht]

I will take the one that fly---I mean the white one !!

:lol: they added too much lightness

[Kitcat]

Not as interesting as Mazda's picture of Franklin's reincarnation, which looks like a grenade went off in a pipe factory.

I do like the white ghost of a Seven floating watchfully over head in your shop!

[slngsht]

Not as interesting as Mazda's picture of Franklin's reincarnation, which looks like a grenade went off in a pipe factory.

I do like the white ghost of a Seven floating watchfully over head in your shop!

In addition to my seven pieces, there are parts from a couple different rock crawlers in there :lol:

[Mandurath]

3 Sevens will come to visit you this eve, that of One laps Past, Present, and Future.....

[WestTexasS2K]

The white car is in training for Run and Gun. :)

[RDROCKT]

I'm sure that "Green Bean" is going to carry a USA 7s sticker in One Lap of America, right?

[WestTexasS2K]

We could if we had one.

[slngsht]

We could if we had one.

Sounds like a challenge to Al :D

[Boxologist]

Sounds like a challenge to Al :D

Ole!
http://www.latimes.com/media/photo/2007-10/33236233.jpg

[SR27.Seth]

Loren- Did you finally find a 2.2L motor- if so, from where? Are you going supercharged or NA?

[WestTexasS2K]

Yeah we found a few 2.2L that we snatched up. We are working on a new supercharger system. We are building our own system with HKS fuel management. We are running one of the cars on E85 and are looking to get some decent powerband improvement over the previous car. We are hoping to get 75-100 more hp over the last set up. We will find out in about a month. Loren

[Al Navarro]

Sounds like a challenge to Al :D

I gave Kevin my own personal USA7s banner!

As for the stickers, we're working on it, people...

[WestTexasS2K]

I gave Kevin my own personal USA7s banner!

As for the stickers, we're working on it, people...

Kevin still has the poster. He hangs it on the toy hauler at events.
Sponsors take up a good portion on the car but I am sure we can find someplace to put the USA7s sticker.

Some more pics of car progress.
trunk lining

http://www.usa7s.com/aspnetforum/upload/304089882_Resized_pics 034.jpg

Wing
http://www.usa7s.com/aspnetforum/upload/1275864541_Resized_pics 043.jpg

Trunk with fuel tank
http://www.usa7s.com/aspnetforum/upload/1994195467_Resized_pics 038.jpg


new wheel just couldnt resist any longerhttp://www.usa7s.com/aspnetforum/upload/1385157630_Resized_pics 084.jpg

To much sleep deprevation causing sheer confusion
http://www.usa7s.com/aspnetforum/upload/897517018_Resized_pics 069.jpg

[slngsht]

More info about the wing please

will you be running a front wing too?

[WestTexasS2K]

Yes that one will actually go on the front. We have a larger for the rear. It is made of CF and is a really nice product. We were amazed at the quality for the money. I forget where Kevin got that but will let you know.

[7evin]

More info about the wing please

will you be running a front wing too?

Here is the web site for the wings.

http://www.aprperformance.com/

http://www.usa7s.com/aspnetforum/upload/626101939_CS-105502.jpg

They make them in both carbon fiber and aluminum.

With the wing configuration we have selected
they claim at 120 mph we can generate 400+ lbs of down force.
depending on AOA of course. We would like to drive the AOA
(angle of attack) electrically so at low speeds we have a high AOA
and at high speeds we trim it out and have less drag. Then of course blow it to
max AOA under braking and cornering for max down force.

Cheers
Kevin

[Ian7]

wow, 400+ pounds, and at only 120 mph ?

sounds an aggressive claim,
not to mention the "quality" of the airflow towards the rear of a 7-esque car

will be eager to hear about real-world results
cheers

[Mondo]

Never thought of it before..... having some kind of automatic adjustments based on speed and turning of the steering wheel would be the ultimate. Imagine F1 does that, if allowed.

[7evin]

That is not 400 lbs per wing, that is combined down force between the 2 wings.
178 lbs front/ 229 lbs rear, Duel element w/ nearly 800 sq in. of surface.
The max AOA on these wings is 40 degrees without creating a
stall condition. Of course at that AOA we are talking about
a significant amount of drag and turbulence over the car. But you don't
love a 7 because of its aerodynamics. Even the Atom has very poor aero.
Because of the hp of the car drag is not as much of a concern as down force
Last year at Road Atlanta we turned 175 down the back stretch before cresting the hill
and heading into turn 10a. At that speed the car is nearly impossible to keep planted and under control.
This year we thought it would be wise to beef up the roll cage and wing it to try and keep it attached to the planet.
If you run the numbers (800 sq in) on a piece of 1/2 inch plywood at 120 mph
@ 40 degrees AOA you would be surprised at the results.

Here is some thing new we are trying to reduce heat in the cockpit.
Its called Lizard Skin.

http://www.usa7s.com/aspnetforum/upload/1991105981_Resized_DSCN6347.jpg
http://www.usa7s.com/aspnetforum/upload/1280113863_Resized_DSCN6349.jpg
http://www.usa7s.com/aspnetforum/upload/597604015_Resized_DSCN6351.jpg

Its a Spray-on Ceramic Insulation and Sound Control
# Reduce engine and solar heat transfer by 25-30 degrees or more (we are hoping for more)
# Reduce noise by 10-12 decibels or more
# Protect surfaces from moisture and corrosion
# Withstand temperatures to 500° F. (260° C.)

We'll see. We have also used spray in foam insulation (tiger Foam) to try and get the heat down.

We will keep you informed if any one is interested.

Cheers
Kevin

[BobDrye]

7evin:
Some of the better airfoils have lift to drag coefficient of 3. In other words for every 3 pounds of lift you create 1 pound of drag. Do you what it is for your wings?


:7head:

[locostv8]

Please post later how you like the Lizard Skin. I plan on spraying the tub area with Linex which I suppose could be done over Lizard Skin.

[JohnK]

We'll see. We have also used spray in foam insulation (tiger Foam) to try and get the heat down.

7even,
I've been looking at a product called Fibrox. It's a hi-grade glass insulation/sound-deadener that's used in manufacturing (e.g. between the catalytic converter and the aluminum shell around the converter) of production cars. It's light and really heat resistant (1500 degrees F), has very high insulating value, and does its work as thin sheet (1/4 inch). The downside is that, since it's inorganic/glass, it's not impact resistant. The combination of this insulation covered by Lizard Skin (for protection and additional insulatin+deadening) sounds like a good combination. What'dya think?
Cheers,

[MHKflyer52]

7even,
I've been looking at a product called Fibrox. It's a hi-grade glass insulation/sound-deadener that's used in manufacturing (e.g. between the catalytic converter and the aluminum shell around the converter) of production cars. It's light and really heat resistant (1500 degrees F), has very high insulating value, and does its work as thin sheet (1/4 inch). The downside is that, since it's inorganic/glass, it's not impact resistant. The combination of this insulation covered by Lizard Skin (for protection and additional insulatin+deadening) sounds like a good combination. What'dya think?
Cheers,

Hi JohnK,

Here is a link to the product that you want to use. It is a good product but can be heavy in certain applications.
http://www.fibrox.com/home.htm
From experience it works very well with a reflective surface of foil (face side) and a thin coat of silicone on the back side which also helps keep it together when flexed.
Hope this helps.

[Mondo]

I was looking at this for the side pipe

http://www.koolmat.com/side-exhaust.shtml

This is some expensive stuff...

http://www.koolmat.com/heatmast.shtml

[WestTexasS2K]

I saw that company at the PRI show. They have some very nice products that is used extensively in NASCAR and INDY. It is very expensive though.

[7evin]

7evin:
Some of the better airfoils have lift to drag coefficient of 3. In other words for every 3 pounds of lift you create 1 pound of drag. Do you what it is for your wings?


:7head:

Hey Bob,

I do not have the info in front of me. I will look it up once we have the car ready to be tuned. WestTex is cracking the whip on me to produce, so I'll do it later.

Cheers
Kevin

[7evin]

Please post later how you like the Lizard Skin. I plan on spraying the tub area with Linex which I suppose could be done over Lizard Skin.

We rhino lined the interior of the car and put the lizard skin in the engine compartment.
We shall see. We are also looking at heat reflective material.

Go easy with linex the weight adds up quick. We put a very thin layer on.

Not a big deal if you are not racing and trying save every ounce.

Cheers
Kevin

[JohnK]

Here is a link to the product that you want to use. It is a good product but can be heavy in certain applications.
http://www.fibrox.com/home.htm
From experience it works very well with a reflective surface of foil (face side) and a thin coat of silicone on the back side which also helps keep it together when flexed.
Hope this helps.


Hi Martin,
This is indeed the manufacturer. I got a sample from the factory in Canada and,
1) "300 Paper" 1/4 inch thick weighs 84 grams per sq foot - I figure around 2 lbs and change for the 12 sq. ft. it would take to do an Ultralite, and
2) if you drop something on it it breaks the fibers - so I can't imagine it living very long without something stout (perhaps Lizard Skin) between it and ordinary road debris.

My question is from whom do you source it? The factory told me that their US distributor and value-added supplier is Tritex in SC, and that the smallest quantity was 125 sq. ft, at $2-3 per sq. ft. Since I only need a tenth of this, I was looking for someone to split up a roll with me to save money.

Again, my take on this is that it's light and very highly insulating, and sounds like a good partner with Lizard Skin.

Cheers,

[MHKflyer52]

Hi JohnK,

I worked for a company call Hi-Temp insulation for a while and they used it in a test application and to my knowledge have not used it for anything else due to it being brittle and heavy for what they produce (think Sputnick an that is all I can say). Their are some other insulators that are even better and thinner and lighter but the expence is very high for a automotive use. Moss Motors sells a heat and sound deadening material that works very very well and is easy to use it is called Dynamat and it's part number is 409-026 and is 4 each at 1x3 ft and cost $114.95 which if used correctly should cover the areas you need to protect from heat. They also have so other sutff 409-015 which is sold by the sheet 48"x72" for $38.95 each.
Hope this helps.

Martin Keller
Ventura, Ca.

[southwind25]

Yes, please keep me-us informed on this lizardskin sheilding.
we took out the trashy looking aluminized "stuff" we found on the birkin. We have the headers wrapped inside the bodywork but are sure more will be needed. dont want to melt our new shoes!:ack:

[WestTexasS2K]

Few update pics fuel cells/ dual tank, main and sump tank

http://www.usa7s.com/aspnetforum/upload/1549612987_DSC01943.JPG

Fuel pumps

http://www.usa7s.com/aspnetforum/upload/275430516_DSC01944.JPG

rear suspension

http://www.usa7s.com/aspnetforum/upload/434426889_DSC01945.JPG

carbon fiber dash

http://www.usa7s.com/aspnetforum/upload/1147860940_DSC01946.JPG

header

http://www.usa7s.com/aspnetforum/upload/1162368233_DSC01948.JPG

header on car

http://www.usa7s.com/aspnetforum/upload/545862251_DSC01949.JPG

engine shot

http://www.usa7s.com/aspnetforum/upload/1375341888_DSC01950.JPG

side view

http://www.usa7s.com/aspnetforum/upload/1904362106_DSC01953.JPG

rear view

http://www.usa7s.com/aspnetforum/upload/332627712_DSC01954.JPG

screw actuator for pedal adjustment

http://www.usa7s.com/aspnetforum/upload/2011407142_DSC01955.JPG

intercooler

http://www.usa7s.com/aspnetforum/upload/610814243_DSC01956.JPG

Hopefully we can get this thing running this week.

[Mondo]

look forward to seeing the supercharger set up (and numbers):thumbs:

What is that "mocal" thing with the light blue hoses attached to it?

[Mandurath]

I remember on your write up you had problems with the previous rear of the car during one of the races. Are you planning on a cooler or something for back there, or figure it was a fluke and not real concerned? Or a completely different rear?

[WestTexasS2K]

We changed to a beefier rear diff it has held so far. Hope that it will handel the addidtional power. We may need to get it Cryo treated if we still have issues.

Mondo you can see the supercharger down on the bottom right in the engine pic hopefully by end of next week it will be on the dyno and we will have some numbers.

The Mocal unit is an engine oil cooler that uses radiator fluid to help keep the oil cool.

[Boxologist]

has that intercooler setup been tried before? it looks like the endtanks are going to impede a lot of air circulation to the radiator.

[WestTexasS2K]

has that intercooler setup been tried before? it looks like the endtanks are going to impede a lot of air circulation to the radiator.

We are really concerned about that ourselves. We specd the core and where we wanted the outlets and they built it with those huge tanks. So we will just have to give it a try. kind of hard to not use such an expensive part. 7s just have such a limited space. We were trying to stay away from water to air intercooler with heat exchanger fluid tank pump and all that hardware. This car is going to be running on Ethanol which should help keep the temps down. We will see. We might have to go with plan B.

[7evin]

We might have to go with plan B.

Hey, how come I don't know about plan B ???

K

[Mandurath]

Is plan B extending the hood bulge, or adding a scoop/naca duct or something and mounting the horizontally above and behind the radiator? Seems to be a good gap there, where the scoop would force air through and down through the engine compartment. Pain to plumb with the one you have unless where you got it would exchange.

[WestTexasS2K]

I had thought about using something like a WRX intercooler that is mounted on top of the motor then using a scoop. But I really didnt want to change the lines of the car to much.

[Boxologist]

maybe find a saab owner for the current intercooler if its a problem. I think a 2nd design could be a larger core(+50%) and have teh endtanks on teh right and left. the tank on teh passengerside for exiting air shoudl be at the top so u can run piping along the top of radiator if possible, or in between teh engine and radiator. i don't remember how much clearance there was in an ultralite around teh radiator.

[WestTexasS2K]

The problem is that the hood is 1/4 - 1/2" from the radiator so there is no room to go over the radiator. The radiator cant go any lower either. Now we could move the radiator back which will allow some room over the top but then the fan will not fit. It is tough on these little cars. There just isnt alot of room anywhere. We are going to rename this car to'' It Just Fits BARLEY"

[Mandurath]

I do not think it will matter that much, looks like there is enough of an air gap for the radiator to get some air behind those tanks. And other ways, like on top would require cutting the hood. Hehehe Though I think adding that big ol wing has already altered the lines of the car. Lookin good! Looking forward to your write ups on this years runs.

[BobDrye]

The problem is that the hood is 1/4 - 1/2" from the radiator so there is no room to go over the radiator. The radiator cant go any lower either. Now we could move the radiator back which will allow some room over the top but then the fan will not fit. It is tough on these little cars. There just isnt alot of room anywhere. We are going to rename this car to'' It Just Fits BARLEY"



Just make sure that the fan is sealed to the radiator with no air leaks. There is a dead spot at the center of an electric fan where the motor is. The pressure difference across the radiator needs to be 50 kpa.

Hope to see you'all this summer.

:7head:

[BobDrye]

Loren :
Can you tell me about the tail lights?


:ack:

[7evin]

Bob,

Check out Watson's Street Works.

www.watsons-streetworks.com

They have some pretty slick stuff

Loren is asleep at the moment.

Here is a pic with them on.
http://www.usa7s.com/aspnetforum/upload/757039470_Resized_pics 119.jpg

Cheers
K

[Boxologist]

http://www.usa7s.com/aspnetforum/upload/757039470_Resized_pics 119.jpg


i can see big red X s as brake lights in ur future. just like Family Fued. pressure sensitive switch, so 1, 2 or 3 red Xs go on!
:7head:

[BobDrye]

7even:
I haven't made it back to Costa Rica yet. Would you be intrested in spending a week on dirt bikes there this summer?

:ack:

[7evin]

I would love too. I'm making a quick trip down in June. Our racing schedule this year
is completely nuts.... It might have to be fall.

I am looking for a latching circuit or a mechanical latching relay so I only have to use
one push button momentary switch to turn the electric fan on and off.
Does anyone have a source? I do not want to use the 4 relay setup. Not enough room in a 7
for banks of relays. I would love to find a solid state unit that has 4 or 5 inputs and outputs. Or relay/mechanical switch.

Cheers
K

[7evin]

i can see big red X s as brake lights in ur future. just like Family Fued. pressure sensitive switch, so 1, 2 or 3 red Xs go on!
:7head:

Great idea, Maybe have a 4th O-shit maximum pressure/ I have waited to late to brake switch
that fires an injector connected to the exhaust so you can blow flames. Now that would get the attention of any one tail gating you. The possabilities are endless.:) :)

Cheers
K

[7evin]

I am looking for a latching circuit or a mechanical latching relay so I only have to use
one push button momentary switch to turn the electric fan on and off.
Does anyone have a source? I do not want to use the 4 relay setup. Not enough room in a 7
for banks of relays. I would love to find a solid state unit that has 4 or 5 inputs and outputs. Or relay/mechanical switch.

Cheers
K

Found it. If anyone else is looking for something like this check out
Pilot 4 button flat panel switch.

http://pilotautomotive.com/catalog.html

I did not like the looks of the switch setup it came with so I just cut the connector off
and solder my own wires on.

Cheers
7evin

[WestTexasS2K]

Its alive!! We fired the engine today fixed the usual nagging leaks, bleed the brakes burped the coolant. 7evin loaded the car up at midnight heading to dallas for a 10am dyno session. I guess we will see if all of our hard earned work is going to pay off. 7evin is planning on videoing a few of the runs we will post them when we get it them done. Bed time for now. 7evin has a 5 hour drive ahead of him he should get 3-4 hrs of sleep before the shop opens.

Man this is starting to feel like the 1 lap already. 20hrs a day of work and a few ours of shut eye for 7evin for the last 4 weeks. He is going to need a vacation to get over his vacation.

[slngsht]

Congrats!

[RDROCKT]

YEEE HAWWWW!!!
Congrats and kudos to you and 7evin.
Fingers still crossed here until the word gets back that all is well.

:7frog:

[WestTexasS2K]

Well 7evin has been in Dallas at Jotech for the last two days dynoing the new car. (whew I am glad I dont have to pay that ticket) We are very pleased with the results of our supercharger system. It performed just as we had hoped. We experienced no belt slipage and the boost curve is very similiar to a turbo. We start building boost at 2200 rpm verses the old Vortech systems 6000 rpm before we built boost. With the boost building lower our powerband is twice as wide as before.

We are set up for two boost levels. On pump gas we are running 9 lbs and we are getting 300hp and over 200 ft/lb of torque. In our E85 Organic Racing mode we are running 13.6 lbs of boost and the results are really impressive. I will just say that it is well north of 300 with a good boost in the torque curve. The nice thing about the E85 is it gives us a very nice cooling effect the engine never got over 180 degrees and the intake temps were very good.

We have very conservative tune on the car for some serious track use with no fear of detonation. We also running a little fat giving up about 10 hp to keep it in a safe range.

7evin will be back tonight with the car to finish up the wiring and odds and ends and get the car ready to hit the road for the Hill Country tour. Hopefully in 3-4 days the car should be about done.

7evin took video of the car on the dyno we will post it in the videos section later.

[7evin]

Hey Guys,

Just got back from Dallas after spending 2 days on the dyno and hanging out with Kenny Tran.
For those of you who do not know him, He is the Jet Lei of the import tuner world.
Races a 2.4L Scion that runs 60 psi of boost and approx 1200 hp.(8.1 sec @ 181 mph in the 1/4)
He doesn't know the exact HP because his dyno can not handle that much HP. Very humble and very bright guy.

Kenny working his magic.
http://www.usa7s.com/aspnetforum/upload/223995895_pics 022.jpg

We are short about 2 psi of what we calculated for the E85 fuel. so we have to hunt for the
missing pressure.

As a side note, when he finished tuning the car he asked " what does this thing weigh ? "
I told him and he looked at me wide eyed and said "WOW this thing is going to be fast! "
Then he said I think I might have to get one of these. I warned him that it was not a good idea.... Of course he ask why ? I said you will lay in bed at night thinking about twisty roads that you can't wait to drive it on.... I am going to take him for a ride and close the deal.....

Cheers
7evin

[slngsht]

Nice! "well" north of 300 sounds pretty interesting :yesnod:

[7evin]

What it takes to do under dash work on a 7.. :jester:

http://www.usa7s.com/aspnetforum/upload/1113813982_pics 016.jpg
http://www.usa7s.com/aspnetforum/upload/64515422_pics 017.jpg
http://www.usa7s.com/aspnetforum/upload/1992141370_pics 018.jpg

I hope I got the pins for the O2 sensor correct.... and not upside down....:d


I'll post the Dyno results when I get the files converted.

Cheers

7evin

[slngsht]

Boy, I spent at least 15 minutes in a similar position while trying to bleed my cluth with the old setup. Except I had my back on the floor and feet near the roll bar :ack:

[Mandurath]

Gah, after a few minutes of that, it would be clean up in aisle seven for me. Congrats guys!

[7evin]

Videos of Mojito on the dyno

http://www.usa7s.com/aspnetforum/Default.aspx?g=posts&t=2310
or
http://www.youtube.com/watch?v=dqHGwl5f0lE
and
http://www.youtube.com/watch?v=A4FfuE5hG5c&feature=related



Dyno Results.

http://www.usa7s.com/aspnetforum/upload/1980908262_E85.jpg

Come to find out today while talking with the engineer at Rotrex
they sent us the wrong pulley. The new pulley should give more HP
at a lower RPM and a little over 15 psi. We shall see.

Cheers
7evin

[powderbrake]

Woo Hoo !!
You will have to carry spare tires, that motor will rip the rubber off!

[BobDrye]

7even:
Last year you had problems with the rear. What are you doing differently this year?

:)

P.S. I ripped the brackets on both side of mine last year.

:)

[rv-4mike]

Love the green - was thinking of going with that color for my Ultralite but you beat me to it. Painting my airplane that color too.

Also like the wheels. Details please - size, source, price???

[slngsht]

Yeah, the wheels rock :thumbs:

[WestTexasS2K]

Love the green - was thinking of going with that color for my Ultralite but you beat me to it. Painting my airplane that color too.

Also like the wheels. Details please - size, source, price???

Wheels are Team Dynamics 1.2 17x8 and 17x9 They are made in the UK takes about 6 weeks about 800.00 per set. The 17x9 is 18lbs 17x8 17lbs

Bob we put an STI differential in this year. It is a little beefier than the standard WRX. We shall see how it handles the extra power. Cryo treatment might be needed.

[7evin]

POWDERBRAKE : Tire ripping lets hope thats all... I can handle buying tires :)

BOB: We went to a R180 diff from a from a STI vs the WRX R160.
We also built an additional cross brace in the car for this diff.

RV-4MIKE: The color is from the 07 Dodge Daytona Sub-Lime. I love it with black.
Wow I would love to see a pic of an airplane painted with it. Any pics ?

WHEELS: 17x8 fronts and 17x9 rear. Team dynamics racing competition series.

http://www.teamdynamicsracing.com/competition_wheels.htm

My buddy Loren found them. He is doing his S2k in sun burst orange and black with the same wheels.
Should be a knock out.

Cheers
7evin

*Side note: I like stainless, bolts, nuts, washers ect. I have tried to use them and grade 8 in the car exclusively.
Do not use them with out anti seize. Because they will and you will have resort to a die grinder to
get them off.

Sorry Loren I did not know you were online.

[WestTexasS2K]

Well we are now legal to terrorize the streets. Now have insurance, inspection, and vehicle registration. Man I love Texas. 2 hours from start to finish.

[BobDrye]

If each of you would lend me a can of this I could be enjoying driving my Seven!




http://www.usa7s.com/aspnetforum/upload/426839778_funny-pictures-whup-ass-0C5.jpg

[WestTexasS2K]

We took Mojoito for the first drive tonight. Whew man that is one very fast car. The power band is very wide compared to before. The car is very solid without any rattles or squeeks. The extra time 7evin spent double paneling and foam filling the sides really paid off. Not to mention the Rhino liner makes a good sound deadner. This car is going to be a real pleasure to drive.

We really like the new Hushpower muffler. It is reasonable at cruising speed, but wakes up and talks to you when you lower the hammer.

We are working feverishly to get the car finished up for the tour tommorrow.

[11Budlite]

Nice job!! :thumbs:

Get it done, have fun, and keep us updated on the tour!! :)

Bruce :7drive:

[Mondo]

Good luck! Obviously we're all rooting for you




(doh!, thought you were starting the race, nevermind):o

[BobDrye]

What's the daily room rate to stay in the "Sarcophagus"/Trailer?






:banghead: :banghead: :banghead: :banghead:

[Deman USA]

Trying to catch up to us i see. We made 348rwhp @20psi, and 288tq. I cant wait to see your mojo again.
We should make a date and run both cars someday.
Dino:)

[WestTexasS2K]

Trying to catch up to us i see. We made 348rwhp @20psi, and 288tq. I cant wait to see your mojo again.
We should make a date and run both cars someday.
Dino:)

Well you have us beat badly in the torque department. but we are close to the Hp numbers. But you still have us bit there. I am sure 7evin would love to meet you at a track to see how they compare.

We just got home from the tour everything went very well with only a clogged fuel filter to spoil the fun for us for about 15 min. But no other issues at all. The car ran great for all 450 or so miles. Not bad for a intial shake down run. A good time was had by all. We will write up a story this week and post the happenings. Loren

[7evin]

Trying to catch up to us i see. We made 348rwhp @20psi, and 288tq. I cant wait to see your mojo again.
We should make a date and run both cars someday.
Dino:)

Hey Dino,

Man I would love to. That would be a total blast. I will be at the NASA Time trials at Texas World Speedway this Fri, Sat and Sun.
Shaking the car down for the one lap. I know its short notice but if you can make it give me a call.
We are also doing the Ultimate Track/Green Car Chalenge again this year. If you want to go let me know. Maybe we could load both cars in our trailer and take them togather. Other wise it will have to be run-n-gun. We are hoping to bring both new cars
to this race.

[Deman USA]

I dont know if we can make it this weekend, but call us about the Ultimate track car chalenge, i think that would be a good time. Call me (224)-612-1320
Dino

[7evin]

What's the daily room rate to stay in the "Sarcophagus"/Trailer?






:banghead: :banghead: :banghead: :banghead:

For you we offer one time good deal. "FREE" but only for one night.

[7evin]

Just a little update, I do not recommend the carbon fiber wings for anything more than looks.
They are to thin and distort at high speeds. On the other hand the aluminum version is very nice.
I think you could stand on them and they are cheaper. If I can find the charger for my camera
I'll post some pics. Currently upgrading the 7s human sleeping attachment/ alcohol smuggling
device. As Bob refers to it as the "Sarcophagus"

Cheers
7evin

[Spaz]

Calling All Green Track Cars
Car Domain Blog (http://blog.cardomain.com/blog/2008/04/calling-all-gre.html)

Someone better let Rob Einaudi know about you guys.

[BobDrye]

Just a little update, I do not recommend the carbon fiber wings for anything more than looks.
They are to thin and distort at high speeds. On the other hand the aluminum version is very nice.
I think you could stand on them and they are cheaper. If I can find the charger for my camera
I'll post some pics. Currently upgrading the 7s human sleeping attachment/ alcohol smuggling
device. As Bob refers to it as the "Sarcophagus"

Cheers
7evin

7evin/Loren:
I going to try to have my seven ready to drive to VIR to cheer you guys on.


http://www.usa7s.com/aspnetforum/upload/840232224_200573004-001.jpg

[WestTexasS2K]

Kevin and Michelle are going to need all the support they can get. They should be well worn by VIR. I will be meeting them at TWS and the drag strip to cheer them on and lend a hand if needed. People can go to the www.onelapofamerica.com look at the route and stop by the track the day they are there and cheer them on. It is nice to have some fans in the crowd.

[RDROCKT]

Kevin/ Michelle
Barb and I are plannning to see you off at the Tire Rack and hopefully cheer you home to victory a week later. We'll be in touch

[Sevnn]

Gratz on getting the car up and running so well.

I was looking at the I/C issue and I'm curious if you could move the radiator more towards the center and have the end tanks on the I/C that wrap around both sides of the radiator. Dinan did some very interesting end tank designs on the I/C the built for the e46 M3. It sounds like over the radiator isn't an option but it looks like there might be enough room on the sides if you could squeeze in about 2 inches on both sides.

[WestTexasS2K]

The radiator can not move to the drivers side due to the frame and lower neck interferance. Plus the tubing would have to go down to 1.5" to fit there. This would really restrict flow.

It doesnt appear to be an issue with temp so far. We have close to 800 miles on it in the last few weeks no over temp issues yet. But the weather has been very good. We will see what the 100 deg days does to it.

[Sevnn]

I definitely understand that reducing the piping size would restrict airflow. Dinan solved this by doing a cone shaped tube that is flattened and curved to wrap around the radiator while increasing its total cross-section. I wasn't able to find really descriptive pictures of the setup but maybe these will help:

http://www.dinancars.com/assets/Image/ride%20and%20drive%20010.jpg

http://67.18.219.83/image_hosting/web_pages/raymondmanas/DinanM3-24.JPG

You would need something a bit bigger than this to handle 15 psi of boost and I don't know if you would be able to get the passenger side tank to wrap around the radiator (perhaps outside the frame rail). Hopefully your setup will work great in hotter weather and you won't have to engineer anything different but if you do, perhaps this could help.

[WestTexasS2K]

Still doesnt change the fact that we cant move the radiator over.

I definitely understand that reducing the piping size would restrict airflow. Dinan solved this by doing a cone shaped tube that is flattened and curved to wrap around the radiator while increasing its total cross-section. I wasn't able to find really descriptive pictures of the setup but maybe these will help:

http://www.dinancars.com/assets/Image/ride%20and%20drive%20010.jpg

http://67.18.219.83/image_hosting/web_pages/raymondmanas/DinanM3-24.JPG

You would need something a bit bigger than this to handle 15 psi of boost and I don't know if you would be able to get the passenger side tank to wrap around the radiator (perhaps outside the frame rail). Hopefully your setup will work great in hotter weather and you won't have to engineer anything different but if you do, perhaps this could help.

[Mandurath]

If you dont have it already, may consider a turbo type oil cooler if it starts to run warm on you. One with a built in thermostat/bypass so the engine does not run to cool either. They are about the size of small intercoolers and can be placed just about anywhere.

The carbon wings, can they be filled with foam to stop the flex? Seems a big waste not to use them.

http://www.uscomposites.com/foam.html

http://www.usa7s.com/aspnetforum/upload/1235608497_RX7 Oil Coller.jpg

http://www.usa7s.com/aspnetforum/upload/414752198_Thermostat Housing.jpg

[WestTexasS2K]

Mandurth it is our plan to fill the wings with some polyurathane foam. We just are running out of time for it now. The company made us a good deal on the aluminum wings since the carbonfibers had so much flex. I have my new car to build which will get wings too. So they arent going to be going to waste.

[7evin]

WOW, thanks for all the input, You guys rock.

Spaz, We have already signed up..... Thanks for the plug. If anyone wants to tell them about us we would be grateful.

Bob, Would love to see you at VIR in the beast.... Here is my cell if you don't have it.
678.314.3906.

Chuck, Thank you for everything you and Barb do to support us. You two are awsome.
Dinner my treat before the one lap...... your treat if we win....:)


Well we spent 3 days wringing this things neck at TWS..:ack: ....

I think Eric Foss ( pro driver/instructor for Porsche and Mazda...) said it best.....
"WOW this thing is amazing, I have never driven anything like it.... totally Sick..."

He helped us tune the suspension and overall setup.... I learned allot.

Sunday morning Eric took me with him for a 20 min thrashing......

I saw Jesus at least twice maybe 3 times, not sure it was just a blur...

We passed everything on the track. The top 7 cars Z06"s Porsches and a 350z. (all on racing slicks and gutted) 153 down the front stretch.... According to the max speed on the GPS.
With 2 of us in the car he turned 1:54 min. He believes the car is capable of 1:50
with a few more tweeks. NOT with me in it.

He brought several people by to show them the car. They all were full of Q"s
He apologized to me and said "I just can't stop thinking about this thing"
I said "welcome to my world"....:)

Near the end of that run the temp started to come up.
Pulled in and found we had blown a head gasket.
Loaded her up and we are in Dallas today at Kenny Tran's
shop. He let me use his dyno bay to pull the head.
Issue... Honda studs did not hold. Going with ARP studs and changing the valve springs and retainers while we are at it..... Glad we found it now and not 3000 miles into the one lap.
I'll post videos later tonight if I have time.

Here are a few pics
http://www.usa7s.com/aspnetforum/upload/726660669_pics 014.jpg
http://www.usa7s.com/aspnetforum/upload/2127085455_pics 017.jpg
http://www.usa7s.com/aspnetforum/upload/181016652_pics 021.jpg

Mojito and the one lap RV.
http://www.usa7s.com/aspnetforum/upload/1631366830_pics 034.jpg

Eric taking it out for a shake down..... This dude is so fast.
http://www.usa7s.com/aspnetforum/upload/766936867_pics 013.jpg


Cheers
7evin

Thanks again for everyones support and input.

[slngsht]

I know the new car is a different animal than the old one, but how much of an impact does the wing have on high speed corners? Did you play with adjusting it?

[BobDrye]

7evin:
The head gasket and the sealing surfaces are as important as the ARP bolts. Make sure that you look at the old gasket closely, and read it to find where it blew. Do you use data logging to see what the maximum pressure and temperatures were? If you need any parts at VIR I can bring them. I'm just down the street from Inline Pro. I get back from teaching in Reno on Monday. My cell number is 703-399-6806. Just remember what Roger Penske said “luck is when preparation meets opportunity".
I'm going to try to drive my bucket of bolts even if it's in primer.



http://www.usa7s.com/aspnetforum/upload/522156301_Copy of P1010680.JPG

:ack:

[7evin]

Rear wing, This track is rather fast, we had to dial some wing out
of the car. We are getting so much rear bite that you almost can't
throw the rear out.... All most.

Bob, Thank you and we are addressing sealing surfaces also.
The Data colection is not complete.
See you at VIR.

Cheers
7evin

[BobDrye]

Rear wing, This track is rather fast, we had to dial some wing out
of the car. We are getting so much rear bite that you almost can't
throw the rear out.... All most.

Bob, Thank you and we are addressing sealing surfaces also.
The Data colection is not complete.
See you at VIR.

Cheers
7evin

7evin:
When are you leaving for South Bend? How is the 7 doing?

[WestTexasS2K]

7evin is in Southbend since this morning. He is finishing up a few odds and ends and double checking all the nuts and bolts. He has a to install the intercomm and start resting up. Most of the competitors will start to arrive tonight and tommorrow morning to get prepared for everything. Hopefully he will snap some pictures of some of the competition and Mojito all stickered up.

[BobDrye]

7evin is in Southbend since this morning. He is finishing up a few odds and ends and double checking all the nuts and bolts. He has a to install the intercomm and start resting up. Most of the competitors will start to arrive tonight and tommorrow morning to get prepared for everything. Hopefully he will snap some pictures of some of the competition and Mojito all stickered up.

I'll take plenty of pictures of the action at VIR next Thursday and post them.

:ack:

[WestTexasS2K]

I will be at TWS in Texas. I will take photos to post as well.

[southwind25]

Hey saw the article about the one lap car, in a kit car magazine this past week..((was at a grocery store waiting for my poison ivy prescription)) Very cool, nice article and great photos...kudo's!:thumbs:

[7evin]

Thanks Robert.

It was a good interview.

Cheers
7evin

[kitmfgr]

Yeh, Kit Car Builder did a fantastic job on that article, can't say the same for Sept. Car and Driver, it was all about the writer and his Nissan, but they do have a photo of Kevin's car lined up in order after the race and Kevin and Mechelle got mentioned a bit. :7drive:

[locostv8]

Now that there are a few miles on the car do you think the Lizard skin helped with temps?

[7evin]

It seems to help quite a bit. I would say it is good for 20 to 30 degrees. I have not taken measurements.

Cheers
7evin

[locostv8]

That sounds like it was worth the trouble/cost.

[7evin]

Mojito's new power plant arrived today fresh from Master Speed Blaster Kenny Tran ! (JOTECH)
Via UPS / Hilly Billy back woods express. (I live in the middle of nowhere and The UPS truck can't get here from there... ) See attached pic

Her new heart beat is strokin it with new Golden Eagle Godzilla sleeves, O-ringed Block,
9.5- 1 compression ratio, Arias pistons that are Ceramic top coated and moly side skirts and
Pauter rods.
Kenny builds these motors for the drag strip to handle 800 hp at the crank.
We are shooting for somewhere around 22 to 24 psi out of the super charger and hoping we get 550 to 600 to the wheels. Like any of that will be usable below 100 mph....
Previously we were running about 12 to 13 psi making 387 hp at the wheels.
Had the Diff Cryoed and REM polished. Lets hope that will be enough to keep it together.

Cheers

7evin

[slngsht]

You're outa control :lol:

[11Budlite]

Yeehaaaaa!!!! :D

[Boxologist]

your right foot thanks you!

[Mondo]

OMG!

You'll need to put that thing in a wind tunnel to work on downforce! Maybe time to add a full cage so you can put a big midget outlaw wing on top of it;)

[7evin]

You're outa control :lol:

I hear that rather often... along with your crazy, you've lost your mind,
what the hell are you thinking, you may need to seek help for theses issues,
you are completely insane to drive that thing.... The list goes on....

I was OK for a very long time, had this issue under control .... until my dear friend Loren
introduced me to these cars....
Of course he does not discouage this type of behavior.....
IE.. Hey loren what do you think about putting JATO assit rockets on mojito for
more straight away speed....
(Loren) " Man Kev that is a great idea, we can mount them at a 15 degree angle and
also get more down force"
Ahh... You only live once might as well have a good 7 at it.... :D

Cheers
7evin

[7evin]

OMG!

You'll need to put that thing in a wind tunnel to work on downforce! Maybe time to add a full cage so you can put a big midget outlaw wing on top of it;)

We have been talking with some people in north carolina about just that.
Business is slow for them, so Mark Davia (5 time winner of the OLA) and us
are talking about splitting a day in the tunnel.
I was considering a full roll cage with a wing on top..... But I'm thinking that money might
be better invested in a ejection seat..... :D

How is that beautiful black beast of yours doing?

Cheers
7evin

[7evin]

Well after waiting 4 months ATI has finally delivered the only set of
8 grove pulleys for a Honda S-2000 on the planet... Or so I'm told.

I just hope everything fits like it is supposed to... I don't think I could stand to
wait another 4 months....

Even the boxes look good to me after waiting for them so long.... :D

Water pump pulley
2 idler pulleys
alternator pulley
the Harmonic damper and pulley
and the (ARE) dry sump pulley on top of the harmonic damper.

[Mondo]

Can't wait to hear about the build! Any custom bracketry/parts from your current set up you won't be needing;)

I'm finally getting used to the car, eliminated some squeaks, rattles & had it on Buttonwillow raceway! I'll have to take off the big windshield if I want any top speed though. Putting on an exhaust heatshield next week. Last thing to really fix is making a bigger opening on top of the fuel tank, for access, and putting in a good fuel box thingy(?) to keep gas near the fuel pump.

Took my daughter's boyfriend for a ride today and he took his video camera. The guy was amped up when we got home! He's making a little something to put on Youtube shortly. Poor kid, he was embarrassed that he hit the pause instead of record on some of the more "entertaining" bits of road.

I'll let you guys know when it's up.

[7evin]

Yes we do have spare brackets. We had 3 sets made just in case one broke during the one lap and so WestTex had a set for his car.
If you decide you really want to go that route I'll send you a set and you can have them duplicated.

I bet you had a blast at Buttonwillow, That is such a fun track.

Can't wait to see the video.


I am trying to find time to start getting this thing back together.

Here are a few pic from the little bit of time I had to work on it today.

The new damper is much larger in diameter and collides with the new water pump pulley.
so it goes back to ATI for some mods

You can see the the ARE dry sump oil pan in these pics.

[Mondo]

Thanks Kevin,

It'll definately be while before I can afford it but nice to know I won't have to re-invent the wheel.

I assume you decided on the dry sump after your "how to JB weld an oilpan" class at Buttonwillow;)

[7evin]

That was one of the reasons.... :D Got to love JB weld ! (If you know anyone who needs 2 new oil pans let me know)

The biggest reason was because these little beast when set up correctly
and on sticky tires can pull well over 1.5 g's of lateral acceleration.
Honda never planed on the S2000 to come close to that.
We think that was a contributing factor that caused us to loose the
motor at Run-n-Gun last year. So after spending money rebuilding we thought
it was money well spent to resolve this issue before we ended up back in the same boat.

This will also allow us to lower the car 1 to 1.5 inches giving us a lower CG.

Faster, lower,stronger, better.... We'll call it the "Bionic Mojito" :D :D

Cheers
7evin

[7evin]

Hey guys.

Just wanted to do an update. We have been laboring away trying to get ready for the up
and coming Texas mile. Just finished plumbing the dry sump today. 23 feet of AN 12 hose !
I could not believe it. 16 AN12 hose fittings and 17 AN12/10 to O-ring boss and NPT fittings.
Got a really good deal on the fittings and the hose from BAT http://www.batinc.net/mocal-central.htm
Their prices were really good and the quality is also good. I would love to use nothing but Aeroquip or XRP,
but I can't justify spending $3000 on fittings.
Although I do have some Aeroquip and XRP fittings on the car. I really like the way XRP does their Clockable
90 degree AN to AN fittings. Very small radius 90's. As we all know every square centimeter
under the hood of a 7 is precious. I think we spend the most time just trying to figure out where
and how to get things to fit. :D

XRP has a downloadable PDF catalog that is fantastic.
http://www.xrp.com/

[7evin]

Here is a good resource for finding air filters of odd sizes.
http://www.knfilters.com/search/univ2.aspx?ID=S0005
Also If you call K&N they are very helpful. They will be happy
to calculate all your parameters and tell you how many CFM your powerplant
uses and what filter will work for you.
For us it was 947 CFM..... Yeah..... thats more than my 7.3 diesel.
Here is a website for engine design calculations.
http://www.ajdesigner.com/phpengine/engine_equations_volumetric_efficiency.php
also
automotive calculators
http://www.csgnetwork.com/automotiveconverters.html

We had to order the largest flat panel filter K&N makes. (22"x7")
Now we have figure out how to make it fit.... :D

[Mondo]

If you still have that supercharger down low on the left side perhaps you could cut an opening in the aluminum on that side... sort of like caterhams have on their bonnet.
Man, I don't even know if there's 22 inches to work with there.

Your definately pushing the limits... might consider upgrading your cage while your at it.
Look forward to another ride if you get out this way again (with the seatbelts on this time).

[7evin]

I think we are going to put it just above the radiator layed back at about 18 to 20 degrees
and run it across the car. We will run a splitter just above the radiator to insure cool air.
This will also allow us to get a bit of ram air effect above 160 mph. Trying to keep the
hood line the same and clean for aero reasons.
Next time I am out your way I would love to go to dinner..... We will drive the cars.
Last time I was so focused on keeping the car in one piece that I did not get the chance to socialize with you like I wanted to.

[rnr]

This will also allow us to get a bit of ram air effect above 160 mph.

You guys are nuts!!!:devil:

Cant wait to see the results :D :driving:

[7evin]

Ok after adding a 2.5 gal. oil tank to the car Where O Where can another
2 + gal. tank be added.... ?
I am going to change this things Name from Mojito to the Flying Tank Wagon.

We currently have 7 (of course) tanks on board...Yes 7.

1 Main Fuel tank (14.5 gal.)
2 Aux 2 gal. sump tank.
3 Over flow tank for radiator (2 pints)
4 Dry Sump oil tank (2.5 gal)
5 Inter-cooler Tank (2+ gal)
6 Dry sump overflow/ breather tank (2 pints)
7 Supercharger oil tank....

5 cooler/heat exchangers.

1 Inter-cooler
2 Radiator
3 inter-cooler Heat exchanger
4 Mocal oil cooler
5 supercharger oil cooler

But no cooler for me or my Beer... Something is wrong with this picture...

We may have to go back to the drawing board with this one !

Maybe I could slip a beer in the top of the inter-cooler tank when Loren is not looking..:)
I know it will be receiving plenty of Ice for those 1 mile blast..... :D

Well back to the original question... On top of the transmission is the only place I could come up with.

[Mondo]

I keep thinking of adding a small vent along the back side of the hood's bulge but don't have the nerve to cut it out & what to trim it with (kind of vane in the car's looks department).

I think it would help get rid of the hot air... currently everything vents out the bottom pretty much. Kevin, it might help get air over that radiator.

[7evin]

I keep thinking of adding a small vent along the back side of the hood's bulge but don't have the nerve to cut it out & what to trim it with (kind of vane in the car's looks department).

I think it would help get rid of the hot air... currently everything vents out the bottom pretty much. Kevin, it might help get air over that radiator.

You are right on the money. Getting air back out of the car is as much of a chalenge as getting air into it.
Last year I added Boat vents to the sides of the hood. That was a huge help.
We are currently skinning the bottom of the car and creating vents on the bottom that
will hopefully generate low pressure areas around each vent to help draw a higher volumes
of air out of the car.
We are considering closing the front of the car up more to reduce air flow into the car for this up coming event to decrease drag.
If you look at NASCAR they run a very small opening in the front of their cars.
@ 200 mph you don't need a very big hole for air to move through.
Plus we will only run WOT for less than 30 seconds then we idle back.

To everyone that responds to this thread I would like to say thanks. You have all helped to
make this car what it is today. Some times a simple though that you might share big or small triggers a
thought on our end and a scary new brain child is born.... :)
So to all of you I say Thank You so very much ! You have caused more sleepless nights
try to figure this all out than you possibility know.... :D :D

[WestTexasS2K]

Glad I am not the only one sleeping at night.

[MHKflyer52]

7evin,

Why not make a removable grill section that is shaped to help airflow and to reduce air entering the engine compartment but can be removed for more air flow say when in transit or just out for the fun of it. It could be part of your front wing that you have run in the past and could make your car even more aero than it is.
Also look at what Porsche did to the 914-6 and the later 914's to help with underbody air flow and engine cooling. They placed two little stiff rubber flaps on the bottom of the floor pan to create a slight turbulence that did two things one it helped to get the low pressure under the car to pull more air down from the engine access on top and to help plant the rear on the ground due to the low pressure area it cause at speed which also helps in the down force on the rear of the car.
Just a thought you also might want to dimple the leading edges of the car like a golf ball as that has been proven to help let the car or object push through the air even easier. I think they actually outlawed it in Formula 1 due to that reason.

[7evin]

Hey Martin,

Its funny you mention a 914. That was my first car. Bought it when I was 14 out of a barn.
Spent the next 2 years getting it ready for when I would be 16. Spent the next 2 years after
that trying to convince the judge that I really was a good driver..... just fast... :)
He finally gave me a choice to either sell the car or join the military and leave his state....
So I Joined the Air Force and Kept the car..... :D By the way I still have that car :D

The front cover we are building is only going to be used at the Texas Mile. I don't ever plan
on going that fast again... :) I never thought about making it part of the wing. That is a good idea....
I will pass that on to Loren so he can stay up at night and think about it.....

I like that dimple idea..... I wonder if anyone makes a dimpled stick on material. That would
be perfect.
Thanks Martin.... If all goes well USA7s and the good ole USA will hold the worlds record
for the fastest 7 type...

[slomove]

......I like that dimple idea..... I wonder if anyone makes a dimpled stick on material. .....

Adhesive bubble wrap? Light and dimply.....Not sure if the adhesive would stand up to 200 mph ;-)

http://www.usplastic.com/catalog/images/products/packaging/50807p.jpg

[rnr]

I like that dimple idea..... I wonder if anyone makes a dimpled stick on material. That would
be perfect.


I believe that the dimples only work for blunt objects like spheres and not for things like airfoil wings: http://www.aerospaceweb.org/question/aerodynamics/q0215.shtml

I wonder if Sevens are unaerodynamic enough to benefit

Popular mechanics tested a commercial dimpled wrap and found their mileage decreased :http://www.popularmechanics.com/cars/news/4316702

[MHKflyer52]

rnr,

You are correct in the fact that dimples do not work on leading edges of wings because the flow of air over the wing surface must be smooth so the air flow will meet at the trailing edge at the same time to create lift by having the air on the top of the wing accelerate causing a lower pressure on top which is what makes the wing lift.

In theory when very small dimples are applied to a surface such as a round nose or edge that has air flowing over it and is not a lifting devise the dimples will cause the boundary layer to separate from the surface and cause a small area that the air is not attached to the surface which reduces the friction and thus lets the object move faster due to less friction.

A good wax job and clean surfaces will most likely be just as effective in reducing the amount of friction that the air flow will cause but if you’re trying to get the most out of something that is cutting through the air as every little bit helps.

Gap seals also help in this reducing drag and turbulences which create parasitic drag and causes objects to go slower through the air. Porsche actually put little brush like things on all the openings of the 550 Spider just to reduce the drag and to keep dirt from getting into different areas and a lot of airplanes still do this in areas were control surfaces have linkage that moves out into the air flow. :driving: :auto:

[7evin]

I spoke to several people about the dimples today. Below 100 mph the effects are minimal.
But above 150 mph they can really make an effect if place correctly. Several racers are
using them. One of my friends that has spent 11 years working in NASCAR, spent days on end working
in the wind tunnel with the Hendricks team thinks it might not be a bad idea to try it.
Kenny Tran gave me the name and # of his sponsor in Dallas who does this kind of
work. I am going to call them today and chat with them about it.
Thanks guys...... I can't wait to try and explain this one to my wife..... Aaaah Honey
I need a golf ball paint job...... Martin said so.... :D Sorry Martin you may have to take
the heat on this one...... It was your idea.... :)

RNR thanks for the refferances and info .... Big help.

I liked the bubble wrap idea.... Look guys this thing is fresh out of the box, I haven't even
finished unwrapping it yet.... :D And don't let me catch anyone popping my bubbles....

[MHKflyer52]

7evin,
I will neither deny nor confirm that I suggested the dimples but I do think it is something to look into as long as you have the time and your other half’s backing (AKA the true sponsor)....:rofl:....:driving:

[rnr]

We need lots of pictures of the finished result :)

[7evin]

3:37 AM Mojito took her first breath with her new power plant...... After being dormant
for 2 years she is alive and breathing fire.... I love the smell of high octane fuel early in the morning......
Hell I love the smell of it any time.... :D

Still alot of work to do, but she is running.

[Mondo]

where's the Youtube clip;)
Like RNR said, we need some pics of that engine compartment.

[7evin]

Will upload pics soon.... :)

[7evin]

Ok guys here are a few updated pics.

We have really been throwing some time at the air box and the intercooler in the
last few days

as you can see we have covered the intercooler tank in lizard skin.

[Mondo]

Man, if you see a few drops of oil under that car it could be a freak'n nightmare finding the coupling...

[powderbrake]

That engine compartment is a new definition of "FULL".

[WestTexasS2K]

Naah Jerry you can put a whole box of toothpicks in there if you like. Of course you might have to take them out of the box and spread them around a little bit to get them to fit.

[WestTexasS2K]

ITS ALIVE!!! Mojito is finally breathing again. After a almost 2 years of engine building, a complete makeover of the intercooler system and addition of a dry sump oiling system Mojito is ready to go, almost. We still need to take it to the tuning mystro Kenny Tran in Dallas for a fresh tune on the ECU. It should be fairly close from our previous tune, but with the compression ratio changes and more air being sucked thru the engine with increased boost we want to make sure that it is spot on before we begin to hammer on her. The dry sump system appears to be working great. We have good oil pressure 30 psi at idle and 80 psi in the upper rpm range which is perfect for the Vtec Honda engine. Of course we were not able to accomplish this on our own.

Thanks to Chuck Spera helping us sort out the dry sump system. Chuck was the first guy in the Ultralite community to dry sump his car and his tips saved us time and money.

Thanks to folks here at USA7s for moral support and suggestions. Your input is welcomed and encouraged now and in the future.

Kenny Tran did the engine build and does the tuning for us. Kenny has been in the import drag racing and car tuning business for years and has been great to work with. Kenny owns Jotech Motorsports if you need a engine build or special tuning give him a call http://www.jotechracing.com/ .

Keith and Bryan Cox from http://www.kandbstreetrodsandmusclecars.com/ have been instrumental in getting this car back on the road. Im not sure it would have been possible without Keiths knowledge and fabrication skills to get the car done. With the tight confines of the 7 engine compartment pretty much everything had to be custom built to fit in the engine bay. Keith made the bracket that the supercharger bolts to on the oil pan. Keith made the bracket that the dry sump pump mounts to. Keith made the header to clear the dry sump. Keith made new motor mounts. Keith made the dry sump oil tank to fit in the car. Keith made the air box to wrap around the massive water to air intercooler that I think is big enough for an eighteen wheeler. Keith moved the outlets on the radiator so there was enough room to mount the airbox. So as you can see Keith has had a big hand in getting this car together. Im pretty sure it wouldnt have come out this nice if he hadnt helped us out.

Thanks to Doc Harmony for paying for it!!!!!!!!!!!!!!!!!!

Here are a few pics of the finished lay out. As you can see the term "it fits just barely" applies to almost every aspect of this car.

[MHKflyer52]

WOW...very very nice work.

[7evin]

Packed up and head to Dallas for tunning and then on to the FireBall Run starting in Henderson NV.

[Mondo]

Look forward to seeing the dynochart... and best of luck in Henderson!

[7evin]

Look forward to seeing the dynochart... and best of luck in Henderson!

Loren should have those with in the next week.

We are looking for missing children again this year.
2008 34 kids were found because of the efforts of this event.
I will post on the off topic if anyone wants to follow along.

thanks

[7evin]

Look forward to seeing the dynochart... and best of luck in Henderson!

Loren should have those with in the next week.

We are looking for missing children again this year.
2008 34 kids were found because of the efforts of this event.
I will post on the off topic if anyone wants to follow along.

thanks

[Mondo]

While in Henderson, don't know if you gamble... but if you want to blow a couple grand of your winnings (could prepare you for those high speed runs too):

http://www.xperiencedays.com/Indy_Car__Victory_Lane.html

[7evin]

I don't gamble... But I would love to do this....

I will be on that road course on Friday competing against everyone else with our
Tow vehicle (Big Bertha) 2002 7.3L Excursion.... no rental cars this year... :)

[Mondo]

Kevin,
I was thinking about high speeds in the 7 and thought perhaps you should add some caster to your alignment.
It would make the steering a little heavier but it would be more stable and less "twitchy" at the high speeds your looking at doing.
I'm no expert but you might ask someone who is and get their opinion.

[WestTexasS2K]

We already have 6 degrees of caster in the car. We are doing another alignment before to tweek the toe to 0 front and rear we will check the caster again. Thanks for the suggestion.

[WestTexasS2K]

Dyno session didnt go as planned. We ended up with subpar dyno numbers. We were only able to 9 psi out of the supercharger about 12psi from what we want. It appears the supercharger is slipping in the drive section. Rotrex is going to send us a new supercharger larger than the one we currently are using and we will do some testing with it. With the 9 psi we made a 338 rwhp a few hundred short of the goal. Back to drawing board I guess. Dry sump system worked like a champ though. Oil pressure was great from start to finish no leaks anywhere so that is good news. Just need to double up the cfm and I think we will be in the ball park.

[twobone]

Suitably impressed!

[Mondo]

So now you got to squeeze in a larger supercharger... hope you have the room.
Glad to hear no leaks and everything else seems to be working as planned.
I'm sure you'll get it dialed in soon.

[WestTexasS2K]

Mondo the physical dimension is the same it should be a remove and replace. It just has a different compressor section.

[WestTexasS2K]

We made 20lbs of boost with the new supercharger. This gave us about 90hp gain over the other supercharger. We have run out fuel pump capacity though and cant pull to 9500, we start to loose fuel pressure at 8900. The tuner thinks we have another 30hp or more in there but we need to upgrade pump. Those 4x1000 cc injectors will move alot of E85 more than the fuel pump can supply. So we are going to have to run the Texas Mile short on hp. Kevin and his family/friends have busted their humps to get ready for this event. I am proud at how much they have accomplised in such a short period of time . Mojito is still a monster and has a huge flat torque curve. Racing starts 8 am on Saturday. Wish us luck!

[Kitcat]

Good luck at the T-mile! Keep us posted.
Mike

[Mondo]

Well stock is about 1hp to 7 pounds; it looks like your at about 1 to 3... it might go fast;)


Look forward to the results

[Mondo]

Bump

Loren, never got an update on how successful or "eventful" the race was.

[supersportsp]

Bump

Loren, never got an update on how successful or "eventful" the race was.

Hopefully it was better than this guy's...http://www.autoblog.com/2010/10/26/video-lamborghini-gallardo-twin-turbo-crashes-at-texas-mile/

YouTube - Underground Racing Twin Turbo Gallardo Crashes At 200+MPH Texas Mile (http://www.youtube.com/watch?v=yS1NU6xjTSY&feature=player_embedded)

[snookwheel]

Wow. That is bad. Hope the driver was ok.

Edit: Just read that the driver walked away. Good stuff.

[7evin]

Hey guys,

Sorry for not getting this out to you guys sooner.

Just spent 2 days driving and working on the car without any sleep.

We installed the new supercharger Thursday morning and worked on the tune till 10 pm.
We were unable to make the kind of power we were looking for. Only 410 to the wheels.

We found that the fuel pump was not delivering enough fuel to keep up. We went ahead to the
Tx mile anyways just to see what we could pull off.

We ran just a bit under 170 mph. She was still pulling but we just ran out of room.
I had to short shift it every run because the fuel pressure would drop.
We found the bearing had gone out of the pump and caused a bit of wear inside
the D rotor.
We will make some changes and try again in march.

It always amazes me how in a crowd of incredible cars these little cars have the biggest draw.

The wreck above was off the hook. Thank goodness he walked away. He came by and visited with me
for about 25 min the day before asking a bunch of questions about Mojito.
He really liked the car. I had no idea who he was till he invited us to come over to his rig for
BBQ that evening.
Super nice guy.


The little boy is Kenny Trans son..... Of all the amazing cars that come thru their shop
Kenny said Mojito is his sons favorite.... :) (green is his favorite color)

[Mondo]

I can't imagine going that fast in my S2K... noticed you had just the front wing on. Did it handle well at speed?

[Eraser-X]

Hey, that is a picture of me talking to you guys! I am the little fat guy with the Birkin that came by and talked to you about your car during the Saturday lunch break.

Eraser-X

[7evin]

I can't imagine going that fast in my S2K... noticed you had just the front wing on. Did it handle well at speed?

Hey Mondo,

It is a little exciting.... What we did was step into it slowly.
1st 2 runs were with all wings and elements
next we lost the top element on the rear wing.
Then the top element on the front.
Then no rear wing at all.

It wasn't to bad. The runway is very wide so you have allot
to play with. Unlike a track where you are shooting for an apex.

[7evin]

Hey, that is a picture of me talking to you guys! I am the little fat guy with the Birkin that came by and talked to you about your car during the Saturday lunch break.

Eraser-X

Hey Eraser X

I remember you... :) Did you have a good time ?
We had a blast.
Thanks for coming by and hanging with us.