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Underdrive Pulleys

Discussion in 'Engine Building' started by Harms Way, Aug 9, 2004.

  1. Harms Way

    Harms Way Senior Member

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    What do you guys/girls think about doing new underdrive pulleys on my 99 civic? I have the basic I/H/E, and skunk 2 intake manifold done to it. I was just curious to what everyones reations were to a new set of underdrive pulleys was? Have you done them? Know someone who has? Good/Bad? Easy install? Etc ETc....
    :unsure:

    I heard that it gives just a tad bit of HP but the torque gain is pretty good. I have A/C and power steering in my car and i havnt used the power steering yet and used the A/C maybe 5 times so far in the matter of 5 months or less.

    I found a set of AEM pulleys on ebay new for around 125.00. Anyone know where i can get them cheaper? Thanks in advance.
     
  2. brc80

    brc80 Senior Member

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    how have you not used the power steering?
     
  3. Harms Way

    Harms Way Senior Member

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    CRAP :lol: ..I meant that i have CRUISE CONTROL and have not used it thus far....sorry
     
  4. law195

    law195 Junior Member

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    1) he probalbly lives at one end of the alley, works at the other and just throwes it in reverse or :lol:
    or
    2) been in a bunch of rear end accidents. and then the cars in the shop so much that's why the AC's only been used 5 times. It's alright, I know I've been a crash test dummy many times.
     
  5. spydy43

    spydy43 Senior Member

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    I would save your money to do something that will really give you some horsepower that you can feel. I dont have any direct experience with the AEM pulleys but I would not imagine that you would see that much gain. And stay away from aftermarket crank pulleys withouth the harmonic balancer I have experience with that... Spun a bearing let me just tell you that rebuilding your block is very costly in comparison to the small gains you will see.
     
  6. sireg

    sireg Senior Member

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    what kind of civic is it? if its a 99 si i have a lightened crank pulley never usedthat would fit your car and i would part with for 40 shipped.... let me know
     
  7. JDMilan

    JDMilan Senior Member

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    how about this, DUMP your AC and PS - you'll gain more from dumping in terms of weight reduction and less rotational mass, than from upgrading to pulleys and best of all it will cost you ZERO
     
  8. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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  9. pissedoffsol

    pissedoffsol RETIRED

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    underdrive pulleys are bad.

    they are not balanced. the oem honda ones are.
     
  10. ef9civicgen4

    ef9civicgen4 Senior Member

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    what about a CTR pully? ive seen those for sale, and was always curious if they are any different than a stock one.
     
  11. JDMilan

    JDMilan Senior Member

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    I think the CTR pulley is the way to go if your running just the alternator, other members will disagree with me, but I think it's a good mod.
     
  12. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    the CTR pulley is just like all the other civic/integra pulleys
    the one you are talking about is the CTR N1 pulley (single belt)
    yes it is made by honda
    no it does not come stock on anything

    it is used for their N1 cars
    those engines are rebuilt constantly so lifespan is not an issue (aqs long as it finishes the race)

    the CTR N1 pulley does not have the dampening layer that the regular pulley has in it
    so your engine will still suffer from added vibration (vibration = bad)

    if you are at all concerned with the engines life span, just keep the OEM pulley and remove the belts for the AC / PS (yank out the full AC / PS systems for weight reduction)
     
  13. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    And if you really want to reduce mass on the pulley, you can send it off to have the PS portion of the crank pulley removed. Usually, the company that does this will re-test the pulley for balance.
     
  14. JDMilan

    JDMilan Senior Member

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    this seems to always draw some type of debate, which is fine.

    but from my experience I ran NO AC, No PS, and a UR crank pulley and had Zero problems for about 1.5 years before sellling the hatch, and the other person who bought it had zero problems also.


    also locally I have yet heard of anyone running into issues with the dampining bushing on the pulleys and such....
     
  15. projectxspeed

    projectxspeed Senior Member

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    I will atest to the statement that underdrive pulley = a bad time. My friend had to get a new engine after spinning a bearing caused by an AEM pulley set.
     
  16. asmallsol

    asmallsol Super Moderator

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    Then it wasn't from the AEM pulley set because the AEM set does not replace the crank pully as far as I know.
     
  17. pissedoffsol

    pissedoffsol RETIRED

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    just buy a f'ing turbo all ready.

    all this work and shit to gain 3 hp and loose everything that works
     
  18. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    :dito:

    And that's why I'm not fuckin around with n/a anymore.
     
  19. tab

    tab Super Moderator

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    :ditto:

    I'll be in the turbo club before I give up all the goodies that make a car great.
     
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