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Old 09-09-2003, 03:17 PM
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Best Option For bolt removal.

I broke my balancer bolt off in my crank, we've all heard this one before. Thing is it's a brand new engine with a 4340 Steel Crank and the bolt that broke off was an ARP. So I'm not dealing with just any easy task, due to the hardnesses of the metals in the crank & bolt.

Can some experts tell me what to do, I'm sure it's in there good, because I had a breaker bar on it tightening it when it snapped.

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Old 09-09-2003, 03:22 PM
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Crap! I would try drilling it with a carbide left handed twist drill. It might work using a cobalt bit too which would be cheaper to buy. Sometimes just drilling it with a left hand drill bit will cause it to back out while drilling. If it doesn't at least you'll have a hole for an easy-out at that point.
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Old 09-09-2003, 04:08 PM
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Last time I tried to use a screw extractor on a very hard screw, the extractor broke off and that stuff is harder to drill than the bolt. I've put in 5 straight 12 hour days in the heat killing myself trying to get it done. I think I'm gonna let the guy that's building my Posi, take care of the bolt too. I just want it running.
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Old 09-09-2003, 04:17 PM
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Drilling would be my try. If you can destroy the inner integrity of the bolt it'll work. Carbide drills work pretty good. I have almost zero luck with EZ-Outs.

Just a question...why were you tightening it with a breaker bar???
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Old 09-09-2003, 05:47 PM
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I hear you man. But the bigger the hole you drill, the bigger the ez-out. The bigger the ez-out, the less likely it will break.
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Old 09-09-2003, 07:34 PM
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well

is it in the car? if'n it ain't take it to your machiniist, and give him your hard earned cashola, or heat the snout, dry ice the busted bolt, and left hand drill that mutha.......
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Old 09-09-2003, 07:34 PM
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If the bolt is flush or a little above you can place a nut, the size of the bolt or smaller, over the bolt and carefully weld through the nut into the bolt. This will allow you to put a wrench on it and wind it out. The extra heat also helps
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Old 09-09-2003, 09:43 PM
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Quote:
Originally posted by ponchopower
If the bolt is flush or a little above you can place a nut, the size of the bolt or smaller, over the bolt and carefully weld through the nut into the bolt. This will allow you to put a wrench on it and wind it out. The extra heat also helps
I didn't check the exact spot where it broke, I was on my 6th straight 14 hour day working on this car when the bolt broke. I was so disgusted that I immideatly picked up my tools, covered the car & came inside the house. I'm starting to feel better about it so I might wait a day and then I'll be willing to spend the day trying to fix this little mess up.


Crazy Larry the motor is in the car. And I don't wanna remove it. If I decide to pull the motor, I'm going to have to bump up the compression & do some more head work to justify pulling the engine.
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Old 09-09-2003, 10:00 PM
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well bro, i guess your gonna get to do a little head work and some comp. bumping
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