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Broke Crank Bolt

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Old 10-21-2010, 09:57 AM
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Default Broke Crank Bolt
So pretty much the worst thing that could happen did. When I was starting my cam swap yesterday while I was removing the crank bolt it snapped in half. So what are my options? Can it be drilled out? Do I have to pull the crank and have a machine shop try and remove it? Or is it pretty much screwed and I need a new crank?
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Old 10-21-2010, 10:32 AM
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Theres a special drill bit that spins the other way while ur drilling in so u can try that it vert effective
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Old 10-21-2010, 11:00 AM
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I dunno, its loc-tited in there. Good luck though.
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Old 10-21-2010, 11:02 AM
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I should mention Ive swapped the cam before so this isn't the stock bolt its an ARP crank bolt.
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Old 10-21-2010, 11:02 AM
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Originally Posted by tweeder
I dunno, its loc-tited in there. Good luck though.
? Not from the factory.
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Old 10-21-2010, 11:03 AM
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Originally Posted by aaronmc
I should mention Ive swapped the cam before so this isn't the stock bolt its an ARP crank bolt.
How in the world does a hardened bolt of that size twist off? Did you install it with red Loctite?
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Old 10-21-2010, 11:05 AM
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Beats me. It started to come out then it got really tight and then snapped. No loctite at all.
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Old 10-21-2010, 11:19 AM
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Sounds like it was cross-threaded.
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Old 10-21-2010, 11:34 AM
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I had the same thing happen with arp bolt. I had to replace the crank because it was to hard to drill out in the truck. To replace crank in the truck isn't to bad it just sucks.
Last edited by 53RUSSELL; 10-21-2010 at 11:40 AM.
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Old 10-21-2010, 11:38 AM
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Im pulling the engine so maybe ill have better luck drilling it. I hope anyways.
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