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#1
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Underdrive pulley WOBBLES?
I've never seen anything like it. After replacing my stock pulley with a new aluminum underdrive pulley, and putting on new belts & torquing the new pulley to 100lbs, I thought I was all done. But when I start it up, the belts run smooth on all the pulleys and tenioners, except the crank pulley that I replaced. It's wobbling around like it's going to fall off. I'm afraid to drive it to the Dragway 42 meet next wekend like this, since it looks like it could throw a belt at any time. I haven't taken it all apart yet, but I figure it must be one of two things:
either I didn't get the pulley onto the key like I thought I had (but I was almost SURE it was locked on); or the pulley itself is not balanced. I'm going to remove the belts, start the car, and see if I've still got the wobble. If so, the I guess I'll take off the pulley and spin it on a shaft to see if it's out of balance. Am I missing some obvious problem here? ![]() Thanks, Cappy
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Cappy '94 LSi Barcelona Red 158,000 miles '92 LS-L Dark Teal 47,000 miles '95 Olds Acheiva 104,000 miles '85 Audi 4000 135,000 miles '87 Supra 129,000 miles - 2nd JDM engine |
#2
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#3
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also what brand is the pulley? did you get it off eBay? *cringe*
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#4
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I DID get it off ebay. Not good, huh? The guy has a 100% positive rating??? Of course if it turns out to be unbalanced that will drop to 99%. Darnit! I thought I'd save 50 bucks and get the cheapo instead of the Unorthodox racing one. So you're telling me THAT could be the problem?
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Cappy '94 LSi Barcelona Red 158,000 miles '92 LS-L Dark Teal 47,000 miles '95 Olds Acheiva 104,000 miles '85 Audi 4000 135,000 miles '87 Supra 129,000 miles - 2nd JDM engine |
#5
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Thanks Budfreak. Let me try to make sure it's on the key OK and not out of balance. If I have to I'll put the old pulley back on.
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Cappy '94 LSi Barcelona Red 158,000 miles '92 LS-L Dark Teal 47,000 miles '95 Olds Acheiva 104,000 miles '85 Audi 4000 135,000 miles '87 Supra 129,000 miles - 2nd JDM engine |
#6
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#7
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![]() ![]() I got mine on ebay about 40,000 miles ago. Never a problem! I did tighten it down GOOD though. Good luck |
#8
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Thanks,
It's definitely on there tight enough, and it isn't moving on the shaft. I either put it on crooked, or it's out of balance. I'll get a chance to work on it tomorrow & let yo know. And YES, Budfreak, I was trying to get a few extra ponies in my car so I wouldn't be too embarassed Saturday at the track ![]() ![]() Cappy
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Cappy '94 LSi Barcelona Red 158,000 miles '92 LS-L Dark Teal 47,000 miles '95 Olds Acheiva 104,000 miles '85 Audi 4000 135,000 miles '87 Supra 129,000 miles - 2nd JDM engine |
#9
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OK It's Official...I'm an IDIOT!
Took the pulley of today, and guess what? I MISSED THE DAMN KEY by a 1/4 inch!
![]() ![]() Thanks for the input. I feel like such a goof! Well, now that I screwed up the $40 pulley, I guess I can go ahead and order a higher quality one. Next time I'll be more careful. ![]() Cappy
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Cappy '94 LSi Barcelona Red 158,000 miles '92 LS-L Dark Teal 47,000 miles '95 Olds Acheiva 104,000 miles '85 Audi 4000 135,000 miles '87 Supra 129,000 miles - 2nd JDM engine |
#10
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![]() P.S. Mine will still be faster. ![]() ![]() ![]() |
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