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Thread: Zetec Power output

  1. #1
    Join Date
    Apr 2018
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    Ft Lauderdale
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    Default Zetec Power output

    Hi Guys
    I need some guidance on what sort of numbers are ave, good, better and outstanding from a 2.0 Zetec

    This is the result from my rebuild which included.
    Overbored
    New Crank
    Rods, Pistons
    Megasquirt ECU
    Polished and Ported Head
    Replaced/refreshed TWM throttle body and bearings.

    I don't really understand what the different colored lines represent but I desperately need someone to justify the cash I spent getting there.

    Are these number average should I of expected more for the $15K+ I sank into the rebuild?



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  2. #2
    Join Date
    May 2019
    Posts
    58

    Default

    Is that at the wheels?

    If so thatís pretty good for a normally aspirated 2.0


    Sent from my iPad using Tapatalk

  3. #3
    Join Date
    Jul 2009
    Location
    Arkansas and . . .
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    3,332

    Default

    - red line: horse power. Peaked 195 @ 7400rpm (using rounded numbers)
    - blue line: torque. Peaked 144 @ 5700rpm (again, using rounded numbers)
    - other lines: maybe base numbers (stock/pre-build?)
    - red and blue lines cross: HP and torque are the same (roughly 142 @ 5200rpm)
    - WCF: weather correction factor. Corrections based on temperature, air density, possibly humidity and elevation. Looks like you may have dynoed on a day when ambient temps were higher than standard (ISA+).

    With the listed rebuild, sounds like chassis dyno numbers. With a 15% parasitic power loss (middle-of-the-road estimate), that would give you WCF numbers at the flywheel of approximately 230hp/170 torque. To reiterate Andy69’s answer, good numbers for a NA Zetec.
    Last edited by xcarguy; 07-17-2019 at 02:48 PM.
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  4. #4
    Join Date
    Nov 2010
    Location
    NC
    Posts
    159

    Default

    Whats your compression ?

    What Cams ?

    This in ITB Correct ?

    15,000.00 was for the rebuild of the Engine only ?

    Tom

  5. #5
    Join Date
    Apr 2018
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    Ft Lauderdale
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    Default

    Here are some more numbers they just sent.

    Ave Torque & Power Before and After Rebuild




    Max Torque & Power Before and After Rebuild




    Any particular questions I should ask the builder?
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  6. #6
    Join Date
    Aug 2016
    Posts
    39

    Default

    Quote Originally Posted by Brightonuk View Post
    Here are some more numbers they just sent.

    Ave Torque & Power Before and After Rebuild
    Max Torque & Power Before and After Rebuild


    Any particular questions I should ask the builder?
    To confirm, you spent $15K and netted and avg of ~30whp and avg of ~20tq?

    Does that $15K include the tuning?

    Did you deliver an engine and they rebuilt or did you bring the car to them and they did all of the work (remove engine, rebuild, and reinstall)?
    - 1300lbs, 170hp. British.
    - 2350lbs, 630hp. British.
    - 2700lbs, 180hp. German with a British accent.
    - 2700lbs, 200hp. German.

  7. #7
    Join Date
    Apr 2018
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    Ft Lauderdale
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    Default

    Itrbofocus Kent Cams
    I took the car to them so it is 100% hands off on my side

    The compression I believe is 11.1 but I will confirm when I pick her up

    These numbers are on pump gas (which was what I had in the tank with an octane booster) they will run 100 octane tomorrow but do not expect much of a change in the output (I will be using that $11 a gallon go go juice from now on)


    Here is the breakdown thus far

    It does not include the Megasquirt system or programing/installation or the TWM rebuild (throttle body bearing)
    Which I am thinking at least another $5K



    What questions should I ask when I pick her up in relation to the performance
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  8. #8
    Join Date
    Aug 2016
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    Quote Originally Posted by Brightonuk View Post
    It does not include the Megasquirt system or programing/installation or the TWM rebuild (throttle body bearing)
    I don't know how difficult it is to install a megasquirt into a 7... not sure if it includes building an engine harness or just using the harness that's on the engine already.

    If it's a whole new harness, those can range from $200 to $2000 for a proper motorsport rated harness. The TWM rebuild should be rather inexpensive though, but it's the labor that's killing you.
    $115/hr, means they charged you 40 hours of labor to do everything. Which isn't terrible...


    I did a complete engine rebuild for another vehicle, but I did the labor on removing/installing the engine and putting the head on the block. Otherwise, all new parts with a Darton sleeved block... for under $10k, including tuning and new ECU.
    I imagine had I paid someone to install the head and put the engine back in the car, it would have been maybe 8 hours of labor.


    Ultimately though, if you feel that each horsepower gain over average is worth $500 and each torque was worth $750, then that's all that matters. Sometimes it's all the builder can extract due to inherently limited issues with the engine. Maybe the Zetec is limited in it's ability to make more power. Also, I don't see any porting/polishing done on the head... Then again, I'm not sure if more power can be had by porting the zetec head.
    - 1300lbs, 170hp. British.
    - 2350lbs, 630hp. British.
    - 2700lbs, 180hp. German with a British accent.
    - 2700lbs, 200hp. German.

  9. #9
    Join Date
    Apr 2018
    Location
    Ft Lauderdale
    Posts
    104

    Default

    Thanks for the input
    As I blew the engine it was a necessity to do something
    I am sure I could have got her back on the road by dropping is a junk motor for a lot less, and more than likely ended up with a lot less power. So if I just that tell myself that I can justify the $500/$700
    + the smile I will have on the track with that extra 30 Hp will help.

    I will post the final cost hopefully later today as the car should be ready this afternoon.
    Life Can Be Cruel

  10. #10
    Join Date
    Nov 2010
    Location
    NC
    Posts
    159

    Default

    So the engine was 4500.00 ?

    Why did you go to the MS ? What were you running before ?

    Did you get the Knock Sensor Option ?

    If your going to do a compression that requires 100 octane why not go for 11.7 to 12.2 and make more HP and TQ ?

    Tom

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