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Best Underdrive Pulleys

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Old 08-14-2009   #1 (permalink)
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Default Best Underdrive Pulleys
Hey what underdrive pulley's do you like best? Or are they even worth it?
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Old 08-14-2009   #2 (permalink)
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They're worth it, if you're running a big stereo system, don't install the alternator pulley. Other than that any of the aluminums are the best for the rotational weight.
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Old 08-14-2009   #3 (permalink)
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Besides the material that they are made from, I havent found any noticable differene between any performance wise.

Besides some chipping on the anodized coating, most are created equal.

Ive also found that the pulley size on a 3g alternator, is dang neat the same size as a underdrive.
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Old 08-14-2009   #4 (permalink)
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alright well i dont have a stereo system at all.. I was think the Mach Performance Power and Amp series aluminum Pullies.. do those look good?
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Old 08-15-2009   #5 (permalink)
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i have a set from upr, i still haven't put them on because i heard from people half and half say put them on and the other say they have had problems with the underdrive pullies.
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Old 08-15-2009   #6 (permalink)
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unless they are out of round, or the bolt holes are not centered they should be fine. Thats the only way you can screw up on a set of pulleys.
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Old 08-15-2009   #7 (permalink)
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i've been running a set of U/D pullies i picked up off ebay..aluminum for like 75?!? quality is nice with them although my figgin belt likes to squeek when i fire the beast up and sometimes when i downshifting... i bought O'Reilly's best belt i could get but still squeeking!
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Old 08-15-2009   #8 (permalink)
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Prestone makes some stuff that takes away squeak, I used it for a belt squeak on my 2.3, it worked........for a while, haha.
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Old 08-15-2009   #9 (permalink)
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Ah, that made me think. Pulley alignment would be another way to screw them up. And probably why it squeaks, or the belt tensioner is failing.
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Old 08-15-2009   #10 (permalink)
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I don't have the stock tensioner on my car... i'm just running crank, w/p, alt/ and p/s pullies... my alt is my tensioner how i have it setup... and theres plenty of tension... i'm thinking the o'reilly belts are junk...they're leaving black residue on my pullies... i've been wanting to get a gatorback belt but last time i went to autozone to get one it took two tards and bout forty five minutes to fail at giving me the proper belt...
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Old 08-16-2009   #11 (permalink)
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I think ill be safe with the march pullies they look like really high quality pullies.
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Old 08-16-2009   #12 (permalink)
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Quote:
Originally Posted by mechanic1025 View Post
alright well i dont have a stereo system at all.. I was think the Mach Performance Power and Amp series aluminum Pullies.. do those look good?
March is a good choice, its all that I use.
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Old 08-16-2009   #13 (permalink)
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alright cool.. they look of very high quality.
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Old 08-16-2009   #14 (permalink)
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March is what I have as well. They went on with no fuss and still look shiny.
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Old 08-16-2009   #15 (permalink)
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March Pulleys... Well worth it. Just remember your alternator and charging voltage when you install UD pulleys...
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