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Lightened underdrive pulleys. Are they really worth the money....?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Markb, Dec 13, 2005.

  1. Markb
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    Markb Active Member

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    [Dec 13, 2005]
    As subject are these Lightened underdrive pulleys really worth the money? Do they offer any gains over the standard items?

    Just asking as I'll need my cam belt doing in a few thousand. So I was thinking about having these fitted while I was at it.

    Cheers Mark.
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  3. HTC
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    HTC Active Member

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    [Dec 13, 2005]
    Lightended pulleys don't have the harmonic balancer, so you run the risk of hurting your engine via vibration. Lots of discussion about the subject on vwvortex.

    The underdrive can cause charging issues at lower revs and also you may find your A/C doesn't pump round as fast as it should. Not a huge problem most of the time, but if you spend time in traffic, then I'd steer clear.

    Personally I would fit them if you paid me for the tiny amount of power they supposidly give.

    They do look bling tho!
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  4. Markb
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    Markb Active Member

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    [Dec 14, 2005]
    Cool cheers for the advice I think I will steer clear then!
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  5. amb276s3
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    amb276s3 bird spotter

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    [Dec 15, 2005]
    I fitted the neuspeed pulleys, but only because i have a lightweight flywheel, seemed to help the balance, no noticable power gains but am due a r/r test so i will letyou know.
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  6. simonelman
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    simonelman Member

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    [Dec 16, 2005]
    Hi
    I have lightened pulleys fitted for about 3 years now and no problems.

    Your right you dont gain power but release it. The car will run smoother and revs faster

    Simple to fit Just do it.

    Simon
    MRCtuning-remaped in real time
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  7. Ryanc
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    Ryanc Active Member

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    [Dec 16, 2005]
    Hows it running simon?
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  8. simonelman
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    simonelman Member

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    [Dec 17, 2005]
    Hi Ryan

    Runing fine

    The cars just been re-maped by the guys from MCRtuning an early Christmas present.
    Now the car performs very well no lag pulls hard to the re line.

    Its been maped with more power and less boost which cant be bad.

    The way MCRtuning work is that they are able to re-map on the fly.Its maped on the actual road not a rolling road Mihnea sits with his laptop and its something out of the Matrix with thousands of numbers tumbling before him.He knows his stuff.

    We need a rolling road day

    Simon
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  9. Ryanc
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    Ryanc Active Member

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    [Dec 17, 2005]
    I'm going to awesome on the 29th,some of the other big boys will be there pushing 400+,come along.
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  10. dummi
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    dummi smoking a6

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    [Dec 17, 2005]
    i was considering the ECS pulley kit with rs4 flywheel, the flywheel is still heavy but i can't live daily with the single mass

    as you say the pulleys look like they have no harmonic balancer? and are just very low fat pulleys, not underdrive. the alternator and power steering pulleys are much smaller, is it short term or long term effects on the engine you speak of? maybe worth experimenting with just ECS light alternator and powersteering and leaving crank stock with harmonic balancer? in place?
    #9

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