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underdrive pully

Discussion in 'General Tech and Maintenance' started by kricket3000, Oct 17, 2007.

  1. kricket3000

    kricket3000 New Member

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    can someone explain what they do and the advantages of having them? kinda a noob question, i know:D
     
  2. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    the pully makes the motor easier to work. and its a good bolt on its the only bolt on that gives true whp
     
  3. 99sidude

    99sidude Moderator Moderator VIP

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    Unorthodox Racing sells lightweight ones. Before I went s/c I looked into them alot. They claim that the weight differance actually does more than the underdriving effect.
     
  4. kricket3000

    kricket3000 New Member

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    thanks for clearing that up for me
     
  5. norcalgsr

    norcalgsr Honda Master Technician

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    Just to add the idea of the underdriving effect is that the pulleys are larger therefore requiring less effort for the engine to spin them because of a lower RPM..
     
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