Anyone using inboard rear brakes?

[slngsht]

pics?

[RDROCKT]

I run them on my Ultralite S2K and XR7 but I can't figure out how to attach a picture. Help!

[slngsht]

click the http://www.usa7s.com/forum/skin_purple/images/reply.gif button... when the next screen comes up, click the http://www.usa7s.com/forum/skin_purple/images/post_button_image_upload.gif button. Make sure you read the instructions carefully and wait while it's uploading. Also make sure the image isn't huge. http://www.usa7s.com/aspnetforum/images/emoticons/cheers2.gif

[RDROCKT]

Sorry, doesn't work for me! Send me an email address and I will send the photo for you to post.

chuck

[slngsht]

sent you a private message with email. Also fixed the reason why you couldn't upload. When I created the "club member" group, I forgot to add permissions for uploading pics.

[slngsht]

http://www.usa7s.com/forum/uploads/20070117_195949_inboard_Medium.JPG

[slngsht]

Chuck, any more info on it?

[RDROCKT]

The photo is of the Ultralite XR7 rear brakes. Pumpkin is the Subaru/Nissan R160 LSD, brakes are Wilwood 4-pots, rotors are Wilwood. Proprietary mounta for calipers and rotors.

If you buy the rear brake system from World Class Motorsports this month,($38,750) the rest of the car is free!!!

http://www.wcmultralite.com/

[slngsht]

What's the HP/TQ rating of those rears?

[RDROCKT]

Got me, but they handle a WRX!

Never had the teensie-weeniest bit of trouble from mine. Four+ years of autocross and track days plus 4000+ miles on the USA 2005 tour.



What have you got in mind?

[slngsht]

Got me, but they handle a WRX!

Never had the teensie-weeniest bit of trouble from mine. Four+ years of autocross and track days plus 4000+ miles on the USA 2005 tour.



What have you got in mind?







I have a solid axle rear on my car that originally came from a 81 supra, rated at 110 hp. Since I'm running 440 hp now, I figure sooner or later, something is gonna give http://www.usa7s.com/aspnetforum/images/emoticons/lol.gif



Always looking for other options I guess.

[RDROCKT]

Uhhh, 440? Holy torqued axles, Batman!

I guess having light car allows the wheels to spin before anything bad happens to the axles, eh?

If the time comes that you need to replace your present rear and axles, I have some ideas of what might work.



Is your present setup and IRS?

[Boxologist]

skip the r160. if i ever get one of my subarus swapped (crosses finger for a return from 7-7-07 present) it will be with the STi's r180. there is also the mid 90s 300z TT 's r200 rear diff which is used to that mount of power.

[RDROCKT]

You're right. I have an R180 rear end assembly here on the shelf but I am not too sure I need it with my puny little S2000 drivetrain!



As I recall, the Nissan rear ends went even larger than the 200's. Loren, if you read this, what are the available units?

[sb427f-car]

I can tell ya right now, you do NOT want to mess withe R160 diff, with a lot of power. Anyone that is serious about upgrading the WRX (especially if they go to the stronger 6 spd) usually opts for the STi's R180. Especially with your power, it's proably a great rear for the lower tq, lighter cars though.





Someone beat me to it. <edited><editID>sb427f-car</editID><editDate>2007-01-18 07:30:46</editDate></edited>

[Al Navarro]

Mazda-In the interest of stemming your flow of capital into FrankenSe7en (friends don't let friends spend TOO MUCH money on cars), aren't there beefed up Supra units?



I know that there were lots of 600 hp Supras in the street racing scene, so there must be more of a simple solution than switching axle types. Unless of course, all you are really interested in are the swee inboard brakes.-Al

[KENLUDE97]

A Supra diff is a good idea. They are very strong.



My good friend has a MKIV Supra that puts down 630whp and 538w ft/lbs on low boost (20-25 i don't recall the actual psi) And he has been doing this for.... 3 years. Granted it ONLY gets driven on sunny days durring the summers here in NY. And that is with a good amount of track time, Drag racing on Drag radials, and street runs. It has seen a good amount of abuse. It finally gave out at the end of this summer. (kind of a suprize that it did give out) And this is on a full bodied car ~3500lbs. Here is a picture of how it gave out. There also is a TRD LSD on order for it... and the rumor is that all the 1000whp+ guys run this LSD with very good results.



http://www.elmiracalvarynaz.org/mike/lsd2.jpg<edited><editID>KENLUDE97</editID><editDate>2007-01-18 08:21:07</editDate></edited>

[powderbrake]

The photo is of the Ultralite XR7 rear brakes. Pumpkin is the Subaru/Nissan R160 LSD, brakes are Wilwood 4-pots, rotors are Wilwood. Proprietary mounta for calipers and rotors.

If you buy the rear brake system from World Class Motorsports this month,($38,750) the rest of the car is free!!!

http://www.wcmultralite.com/



Chuck:

What is that round silver thing with the wires coming out of it? Is that a fuel pump? I tought you were running an in-tank pump. http://www.usa7s.com/aspnetforum/images/emoticons/confused5.gif



I looked at it some more, and that must be the power seat actuator.... I think http://www.usa7s.com/aspnetforum/images/emoticons/blush5.gif <edited><editID>powderbrake</editID><editDate>2007-01-18 12:51:10</editDate></edited>

[RDROCKT]

Jerry,

That is the actuator for the adjustable drivers seat, there's another on the adjustable pedal assembly.

chuck

[slngsht]

Mazda-In the interest of stemming your flow of capital into FrankenSe7en (friends don't let friends spend TOO MUCH money on cars), aren't there beefed up Supra units?



There are, but they're on the later supras, and totally different setup. So they might as well be on any other car.

[WestTexasS2K]

Yeah Chuck and others are right about the R160 but it handles the s2000 power well and has a wide selection of gears and lsd is easy to find. You get all this in a 50lb package that can be found on cars from 89-2003 and can pick them up for 75.00 or less in most cases.



If you up the power to the 300hprange the R180 will handle it. But the STI diffs are going for 1K and has a 3.90 and thats it. Aftermarket ratios are hard to find and if you do come across them will add another 500.00 plus set up to the tab.Also available in 240-260z cars but they do not have the lsd.



After that the R200 is the next step those are found in 280z from 76-89 but lsd are hard to find and Quaife is the only aftermarket that I know of that has an lsd they run 1500.00+ . The 240sx has alot of r200 lsd with a 4.11 ratio that are cheap and readily available but they are of the short nose variety.



The next big daddy R230 from the 90 and up 300zx will handle about 700hp and are of the short nose variety. Has a few gear ratios to choose from and lsd are plenitful. These are also found in the Infinity Q45 as well. These units weight about 85lbs.



Learned most of this stuff from putting V8 in Datsun Z cars for several years. There is alot of info on www.hybridz.org . You can literally spend days going thru all the post.



The Supra IRS and Mazda RX7 Turbo cars also have good IRS units they will handle high power loads.



Another diff. that get over looked but is a good choice is the corvette C4 units. It is all aluminum. it has a large mustache bar intergral to the unit with a rear toe adjustment and 4 drag links that are refered to as dog bones due to their shape. They will handle large horsepower and are reasonable priced fairly light weight and has large disc brakes all included. Gear ratios are bad 2.73-3.27 mostly but are available in just about anything you like. If I were to build the Locust I might give this unit a hard look. It would be easy to set up can be narrowed by 12-14 inches to fit you chassis. It is very easy to convert to coil over shocks too. That my 2 cents.<edited><editID>WestTexasS2K</editID><editDate>2007-01-20 08:32:37</editDate></edited>

[GailE]

The C4 setup is a close match to my Rotus chassis, so if my rear fails, i'll be giving that some serious consideration.

[locostv8]

http://wrangler.rutgers.edu/gallery/d/39735-2/deman+irs+3.jpg

This is a pic of a Deman 7 using a MN12 8.8. The 8.8 is stronger than the D44 used in the Vette and cheaper. The same diff if used in Terminator Cobras and with stronger half shafts has lived over 300 passes in a slick equipped 4,000 lb 900+ hp drag car. They are very easy of narrow or widen.<edited><editID>locostv8</editID><editDate>2007-01-20 23:36:00</editDate></edited>