Abf tuning

Discussion in 'Mk3' started by Mini_dub, Mar 12, 2015.

  1. Mini_dub New Member

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    Hi
    I am just after a small amount of info for getting a little but more poke from an abf which I am most of the way putting into a mk4 polo
    First off is the flywheel is there a aftermarket lighter flywheel available or another type from a different engine etc? Or is it a machine shop job?
    Second up is cams I want to change out the factory ones what have other people used or recommend? I have been looking at newman cams which they class as tarmac rally spec has anyone used these before? the car will be running on jenvey itbs and I think mega squrt for management

    Any help would be great thanks

    Chris
     
  2. Ralphead New Member

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    I'm just about to put an ABF in my Corrado. Going to be using a G60 flywheel which weighs in at 7kg versus, I think, about 9kg for the ABF one.

    I say it's a G60 flywheel but I bet other engines use them, I believe it's the same as the one bolted to my Corrado's original KR. Both engines are still in their homes so far so I haven't had a chance to compare them.

    I don't know about tuning the ABF but I hear the cams are pretty damn good already. Toyotec's a Megasquirt wizard so it may be best to find him on here, he's never far away..
     
  3. foreveryoungaus16v Forum Member

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    Lighten and balance flywheel to about 5kg
    Chip the Ecu
    Modified airbox with cold air feed
    Decent exhaust (Jetex etc)

    Port and polish cylinder head (careful if wanting to change cams)

    It's not the engine which is the problem it's the gearing, 3rd being way to long. Change the gearing to a 3.94 FD.

    My advice is not to bother with cams unless you are prepared to go big cams, big headwork, ITBs and standalone management...and even then, a high compression bottom end is really needed or you are wasting the cams

    Mine just pulled 162.2 bhp on the TSR rollers withthout any headwork having been done. Not bad for a 20 yr old car, 150 bhp from factory! But like everything, it all costs coin and the engine needs to be healthy and well maintained.
     
    Last edited: Apr 9, 2015
  4. Toyotec

    Toyotec CGTI Committee - Happy helper at large Admin

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    • Fit engine as is, and get a short final drive 3.94 or 4.23 with a diff fitted.
    • Get used to it and take it to the track to learn the how to drive it and critique it properly.
    • Then tune the standard ECU or standalone to deliver maximum response. Get used to that.
    • Then get the engine to breath a bit more at higher engine speeds with Cams.
    • More? Throttles ( need to be running a SEM)
    • More? High compression and gasflowed plus valve work, plus your previous step with a remap. This means a proper rebuild, blue printing everything.
     
  5. foreveryoungaus16v Forum Member

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    Give Glen (Ess_three) a message. He is the most knowledgeable person on the ABF I have come across.
     
  6. Toyotec

    Toyotec CGTI Committee - Happy helper at large Admin

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    Ess Three is probably out enjoying life on his speed triple!
     
  7. foreveryoungaus16v Forum Member

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    Yeah Your right! Lol
     
  8. SimonG Forum Member

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    I can never find his posts about his Mk3 can anyone give me a pointer for the search function, keywords etc?

    Edit: found a couple of threads now.
     
    Last edited: Apr 9, 2015
  9. Toyotec

    Toyotec CGTI Committee - Happy helper at large Admin

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    Found Glen's near 200bhp ABF thread and stuck it.
     
  10. Toyotec

    Toyotec CGTI Committee - Happy helper at large Admin

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    He would pop in in due course spoke to him today! He is very well
     
  11. Ess Three Forum Member

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    Somebody say my name three times whilst looking in a mirror?

    I'm still about...lost a bit of interest in cars after getting banned a few years ago. Got back into bikes.
    Toyotec is right...I've been out on my Speed Triple R lol

    I still have VWs though :)
     
    RobT and Toyotec like this.
  12. RBPE Forum Member

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  13. MUSHY 16V

    MUSHY 16V Moderator Staff Member Moderator

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    nice day for it bud
     
  14. Toyotec

    Toyotec CGTI Committee - Happy helper at large Admin

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  15. Toyotec

    Toyotec CGTI Committee - Happy helper at large Admin

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    I hear even your Diesel has more 'valves' and torque that the 8v massiv....
     
  16. Ess Three Forum Member

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    I believe it does...on both counts. :thumbup:
     

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