Pulley's

Discussion in 'Modifications & DIY how-to' started by oneiguy, Nov 28, 2007.

  1. oneiguy

    oneiguy Active Member

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    I was looking at switching out my pulleys on the car. I'm looking at the GFB set. Is it worth it to do all of them, or should I go with just the crank? Also what potential problems can come from doing this?

    Thanks
     
    #1 oneiguy, Nov 28, 2007
  2. GTscoob

    GTscoob Black is Beautiful

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    If you're going to do that just get something like the Perrin or UR lightweight crank pulley. Underdrive pulleys will just cause your alternator to spin slower resulting in more dimming of headlights (already a problem on these cars).

    Lightened pulleys free up some hp, I'm not sure how much but they help throttle response. Just dont ever put on a lightweight flywheel if you're running one or you'll get misfire CELs all day long.
     
    #2 GTscoob, Nov 28, 2007
  3. BlackAndBlue

    BlackAndBlue Member

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    some say it deharmonizes(?) the crank shaft, but there are no harmonic dampneners in the oem crank...
     
    #3 BlackAndBlue, Nov 28, 2007
  4. josh booth

    josh booth Active Member

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    I run the street light flywheel from ACT no problem.
     
    #4 josh booth, Nov 28, 2007
  5. Weapon

    Weapon 90lbs of dynamite
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    you have a lightweight underdrive alt pulley already ;)
     
    #5 Weapon, Nov 28, 2007
  6. GTscoob

    GTscoob Black is Beautiful

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    He's got your old car?
     
    #6 GTscoob, Nov 28, 2007
  7. Weapon

    Weapon 90lbs of dynamite
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    yup
     
    #7 Weapon, Nov 28, 2007
  8. oneiguy

    oneiguy Active Member

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    Yup I got his old car. Thanks again for the goodies. Gonna get the horns on 2nite.
     
    #8 oneiguy, Nov 28, 2007
  9. WJM

    WJM Banned

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    Lightweight everything only causes regular missfire CELs on AVCS-DBW engines w/stock ECU.

    Ashley25's 04 WRX has the UR underdrive-lightweight pulley set (Crank, ALT, PS) as well as the Exedy 12lb flywheel.

    NEVER had a missfire CEL.

    ZERO problems with the charging system.
     
    #9 WJM, Nov 28, 2007
  10. oneiguy

    oneiguy Active Member

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    Thanks all for the advice.
     
    #10 oneiguy, Nov 28, 2007
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