LT1/LT4 Tech 1993-1997

Crank hub?

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Old 12-30-2012, 12:43 AM
Mikey.'s Avatar
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Default Crank hub?

Hey guys. I had a pretty bad wobble on my harmonic balancer. I replaced it, and there's still a small wobble. I think I have to replace the hub. My question is.. where the heck do I find it?

I've checked ebay and my local part stores. I found two online. One is keyed, and my balancer is not. The other one looks kind of odd and is also keyed..


Any ideas?
 
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Old 12-30-2012, 09:24 AM
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Before wasting any more money, pull your hub off, run the engine, and look to see if the crank snout itself is wobbling.
Some nit-wits have been known to jack up the front of the engine by the lower pulley, and then bending the crank.
 
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Old 12-30-2012, 10:03 AM
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wow 76 bucks,,, #10128273 GM Parts Direct: Your direct source for Genuine GM Parts i dont think the keyway makes a difference., at least the one i bought said it worked with either.
 

Last edited by craby; 12-30-2012 at 10:05 AM.
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Old 12-30-2012, 11:36 AM
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Originally Posted by Camaro 69
Before wasting any more money, pull your hub off, run the engine, and look to see if the crank snout itself is wobbling.
Some nit-wits have been known to jack up the front of the engine by the lower pulley, and then bending the crank.
Oh wow. No part of this motor has seen a jack. I'm not that dumb. lol

This is a new problem. I've had the car for over a year now. Still think it's a possibility?

And thanks Craby. I might buy the one they have on Jegs.
 
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Old 12-30-2012, 09:57 PM
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Originally Posted by Mikey.
Oh wow. No part of this motor has seen a jack. I'm not that dumb. lol
This is a new problem. I've had the car for over a year now. Still think it's a possibility?
Wasn't referring to you...but a previous idiot!
"This is a new problem"...what does this mean, what was the tip off? Did you just start to experience a vibration, or do you not have a vibration at all? Is it possible you always had a wobble, but just now noticed? Crank hubs don't just "bend" on their own. Seriously, save your money for now till you remove the hub and inspect the crank.
 
  #6  
Old 01-12-2013, 08:38 PM
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Still haven't messed with the crank hub, been pretty busy lately.

I have an odd question though. My car has the newer version of the optispark with the piece that has two o-rings that go into the cam. When I was replacing it the oring on the top got messed up. I peeled it off and stuck it in. I'm wondering if this could cause the vibration that I'm getting. From what I read it stabilizes that shaft. Interested in what you guys think.

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