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The Terminator
Terminator Talk
Harmonic Balancer fell off - Part2
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<blockquote data-quote="badcobra" data-source="post: 16603097" data-attributes="member: 20798"><p>Man what a mess right there. It's also possible the stock bolt broke and snapped off. There is tremendous load there on supercharged cars and they should have upgraded to an ARP bolt. You can definitely damage crank threads pulling the balancer on using the bolt, even on a forged crank. I for years did that on mine and the threads got boogered up, but fortunately I was able to chase em and get em back in shape. I now have a balancer install tool. </p><p></p><p>That crank is likely not done for, it can be drilled and tapped and reused most likely. Send it to a competent machine shop to have it repaired. If you need a referral for one, we have an incredible one local to me in Minneapolis called Crankshaft Supply. They can fix about anything so do not be afraid to ship it out. </p><p></p><p>The benefit of reusing the crank is you wouldn't have to rebalance. But, most likely you are looking at a full rebuild and if that engine is already .020" over on the bores, I would suggest not going more and finding a new block. There is no such thing as just 'replacing the crank'. Prepare to empty that wallet.</p></blockquote><p></p>
[QUOTE="badcobra, post: 16603097, member: 20798"] Man what a mess right there. It's also possible the stock bolt broke and snapped off. There is tremendous load there on supercharged cars and they should have upgraded to an ARP bolt. You can definitely damage crank threads pulling the balancer on using the bolt, even on a forged crank. I for years did that on mine and the threads got boogered up, but fortunately I was able to chase em and get em back in shape. I now have a balancer install tool. That crank is likely not done for, it can be drilled and tapped and reused most likely. Send it to a competent machine shop to have it repaired. If you need a referral for one, we have an incredible one local to me in Minneapolis called Crankshaft Supply. They can fix about anything so do not be afraid to ship it out. The benefit of reusing the crank is you wouldn't have to rebalance. But, most likely you are looking at a full rebuild and if that engine is already .020" over on the bores, I would suggest not going more and finding a new block. There is no such thing as just 'replacing the crank'. Prepare to empty that wallet. [/QUOTE]
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Harmonic Balancer fell off - Part2
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