Broken crank bolt and extractor

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Jun 16, 2012 | 01:07 PM

Chevyguy358

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From: Wilmington, NC

Broken crank bolt and extractor

The head of my crank bolt sheared off when my harmonic balancer decided to explode (stock), so I decided to drill and extract it. Well, I should have purchased a higher grade extractor because now I'm stuck with a broken extractor inside the snout of the crank along with the remainder of the bolt. I'm really hoping I don't have to tear the motor apart and have a machine shop extract it. Should I try to drill around the extractor and hopefully then remove that?

Last edited by Chevyguy358; Jun 16, 2012 at 01:17 PM.

Jun 16, 2012 | 03:06 PM

LT1FirebirdSLP

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i would try to extract the extractor, then work back from there, with a higher grade extractor.

Jun 16, 2012 | 04:01 PM

FAD2BLK93

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From: POULSBO WA.

X2...u dont really have many choices here. Either go for it or u will have to go to the machine shop. Good luck.

Jun 16, 2012 | 04:25 PM

tricked94camaro

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From: Burlington, WI

just had that happen to me with a exhaust bolt on a head. got too impatient and took the motor to a shop lol thankfully it was already out of the car!!

Jun 16, 2012 | 04:50 PM

blown97ss

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From: west coast

Samething happened to me. The bolt didn't break smooth so it had a couple places where I was able to get a chissel and tap the bolt loose until it was able to spin by hand.

Jun 16, 2012 | 10:26 PM

warriorcustoms

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From: Oklahoma

Had that happen on my blazer I used a center punch to break up the hardened ez out Get the good square lookin ones **** those twisty ones Dont drill around it youll end up ****** the threads up ITS A BITCH but be patient & youll get it After the broken ones out drill it to the biggest square extractor The reverse drill bit kit ones work good too

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