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Why would my crank pulley wobble? HELP!

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Old Dec 7, 2005 | 10:22 PM
  #1  
StudyTime's Avatar
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From: BTR, Louisiana
Why would my crank pulley wobble? HELP!

Well, I'm trying to fix my power steering leak tonight (that's another thread in the regular fbody forum) when I noticed something odd.

All of my accessory pullies rotate nicely about their axis, but my crank pulley seems to have a slight wobble. I looked at the center of the assembly and noticed the crank bolt seemed to be rotating slightly off from the center of where it should be.

I, at first, started assuming the worst, but I'm guessing (hoping) this is one of those too bad to be true things. It might be my imagination, but I really don't think it is. I have always had a noticable vibration at ~1800, but I attributed that to the polyurethane transmission mount.

Anyone? Looks like the crank bolt could be 50 thousands or so off from rotating where it should be.

Ben T.
Old Dec 8, 2005 | 08:53 AM
  #2  
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Re: Why would my crank pulley wobble? HELP!

Sounds like the crank bolt is cross threaded. That would suck. Tapping a crank is not fun.
Old Dec 8, 2005 | 09:25 AM
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Re: Why would my crank pulley wobble? HELP!

Originally Posted by PAGregSS
Sounds like the crank bolt is cross threaded. That would suck. Tapping a crank is not fun.
Greg, why did that possibility not occur to me? That could very well be the problem. I'll add this as the 17th thing to do to the car before I can drive it again.

Spinning this out-of-round assembly to 6000+ could not have been too good for my bottom end. :blah:

Ben T.
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