BBC Broken exhaust manifold bolt - Engine Troubleshooting


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BBC Broken exhaust manifold bolt

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twelvewheels
Novice

Dec 6, 2013, 1:49 PM

Post #1 of 3 (1142 views)

BBC Broken exhaust manifold bolt

BBC Broken exhaust manifold bolt Here it goes again with my 1994 Chevy P30, 7.4 gas engine. In the process of putting on exhaust manifold gaskets I sheared the head off one of the right side bolts, so I have about 1/2" sticking out. So far I've heated it red hot with a torch but it doesn't want to budge, at least not with a Vise-Grip. It appears the threads have a bit of an interference fit, i.e. the bolt threads don't seem to be cut full depth. Anyone have any ideas to get this bolt out? Tom

twelvewheels
Novice

Dec 6, 2013, 2:14 PM

Post #2 of 3 (1133 views)

Re: BBC Broken exhaust manifold bolt

Never mind! I took my air chisel with a flat bit and rattled the bolt stub head-on. That loosened it enough to get it out with a Vise Grip. Thanks for reading. Tom

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Dec 6, 2013, 3:01 PM

Post #3 of 3 (1129 views)

Re: BBC Broken exhaust manifold bolt

Thanks for the follow up. Glad to read you got it out.

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