lightened crankshaft pulley

Discussion in 'Modifications And Maintenance' started by mc_866, Apr 25, 2005.

  1. mc_866
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    mc_866 New Member

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    Anyone have one of these installed? Have you noticed a big improvement?

    They have them here for $90 shipped best deal I have found so far.


    http://www.mrjosh43.com/parts.html
     
  2. AWDimprezaL
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    AWDimprezaL has more posts than you

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    that sounds a tad steep, mine was underdriven also, and was only 50, its 1 lb:cool: it revvs alot faster, but i have an 11 lb flywheel too:p thats the most responsive mod that ive done flywheel
     
  3. Dynapar
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    Dynapar Well-Known Member

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    i just put mine in about a month ago. didnt notice a HUGE improvement. however my car revs faster, and idles lower. also at cruising speeds my RPMs are about 250-500rpm lower than they wee before i installed the pulley.

    the bigest gain i noticed was a 3-3.5 MPG gain. that is still with me being pretty tough on the car. so i think of this as an investment.

    (if you do this ou may need new belts.)
     
  4. mc_866
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    mc_866 New Member

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    I have the new belts, I figured this may be a good idea while a was changing them anyway.

    AWDimprezaL where did you pick up yours?
     
  5. AWDimprezaL
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    AWDimprezaL has more posts than you

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    ebay, its an unorthodox copy 50 bucks shipped
     
  6. mc_866
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    mc_866 New Member

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    I don't think I want to go with the unorthodox version of the pulley, I've read it’s much harsher on your engine than a normal lightened version. But then again any driving is harsh on an engine.
     
  7. Dynapar
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    Dynapar Well-Known Member

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    the new belts you got are they the same size as the stockers? because when you under drive the ACC you are using a smaller crank pulley. so you will need shorter belts.
     
  8. mc_866
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    mc_866 New Member

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    I meant I don't want the underdriven version, not unorthodox, I know unorthodox is a brand. Anyway I did pick up the stock belts, will they work on a standard lightweight pulley?
     
  9. Dynapar
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    Dynapar Well-Known Member

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    if ou are not underdriving then stock belts should work.
     
  10. illegal2.2
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    illegal2.2 Well-Known Member

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    sorry to go off topic,
    but do all ej motors share the
    same crank pulley? found alot of
    AEM on ebay for a good deal...like 100 shipped!
     
  11. AWDimprezaL
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    AWDimprezaL has more posts than you

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    pretty much yes, if it fits a 2.5 it fits a 2.2, i even think h-6s are the same
     
  12. subi_2.5rs
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    subi_2.5rs New Member

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    yes i heard of this mr josh if that it....its suppose to give you like 4-5 whp.....
     
  13. kickin_81
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    kickin_81 Well-Known Member

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    I've had my Mr. Josh pulley on for about 3 years now. I was his first customer, and my G-tech reported an 8 HP gain the next day on the same road. I felt the extra pull immediately with most of the pull being on the upper RPMs.

    The Mr. Josh pulley is stock size, so your stock belts will fit perfectly. :)
     
  14. Dynapar
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    Dynapar Well-Known Member

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    according to UR any ej pulley will any ej engine. ie my 2.2l underdrive pulley will work on a forester, wrx, STi legacy.....