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Pulley Wobble

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Old May 25, 2008 | 01:08 AM
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Default Pulley Wobble
I have an after market ASP crank pulley and it wobbles at idle. The pulley has been on for quite some time. No belt slippage issues, just looks funny. Any ideas? I am confident it is seated properly, considering it has not fell off and the belt rides it fine. Maybe I just got a bad one? All help is appreciated.
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Old May 25, 2008 | 01:11 AM
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What kind of bolt did you use? You didn't reuse the stocker did you?
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Old May 25, 2008 | 03:16 AM
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my powerbond isn't near as straight as stock either. i used a new gm bolt as well.
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Old May 26, 2008 | 12:20 AM
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New bolt after it was torqued down with the old one.
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Old May 26, 2008 | 05:35 AM
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Originally Posted by Black 99 Bird
New bolt after it was torqued down with the old one.
That is how you do it. Hmmm... Makes you wonder if the pulley is mis manufactured.
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Old May 26, 2008 | 07:34 AM
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If the pulley is wobbling you need to remove it, because its unbalanced and can cause main bearing failure. or in worse case it can brake the crank ,At high rpm's the vibration from a warped or loose pulley can beat the bearing to death. And also can do damage the the oil pump were its mounted to the crank right behind the damper.
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Old May 26, 2008 | 11:46 AM
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is there anyway to find out if its wobbling, because sometimes our eyes play tricks on us.
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Old May 26, 2008 | 08:04 PM
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Originally Posted by Empatho
is there anyway to find out if its wobbling, because sometimes our eyes play tricks on us.
Good question? It looks like it wobbles but when you hit the gas you can't see it anymore?
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Old May 26, 2008 | 08:44 PM
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Try a timing light and put four equal marks on the edge of the damper and when you rev the motor, the timing light will slow the rotation (By Eye) a oscillating or strobe effect.
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