C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

ARGH!!!!! Manifold stud broke

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Old Sep 13, 2008 | 04:12 PM
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Default ARGH!!!!! Manifold stud broke

Heard a rattle coming from under the hood of my 91. The rattle is coming from the rear A/C bracket stud that bolts on to the manifold stud. The stud is in two pieces. A chuck is in the head. How can I get it out. Oh, the A/C compressor bracket is also cracked allowing the compressor move a little.

I am open to ideas on how to get the rest of the stud out. Without having to pull half the engine.

thanks
Gary
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Old Sep 13, 2008 | 06:46 PM
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I sympathize with your plight. I have a situation of my own where I will be removing both exhaust manifolds from the engine to replace studs that broke when taking the exhaust system off.

Assuming there is still some stud left sticking out, could you loosen all the manifold bolts and slide it away from the head? Then use vicegrips?
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Old Sep 13, 2008 | 07:14 PM
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Can of Kroil, drill bit, drill, EZ out.
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Old Sep 13, 2008 | 08:33 PM
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I wonder if some light heat from a torch might help?
Just a little, don't want to hurt that aluminum.
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Old Sep 14, 2008 | 04:01 PM
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I have not pulled the exhaust off yet. I'm thinking it may be broke off in the head. I'm not sure how I'm going to get a drill and bit to fit in there. I am have to buy a right angle drill.

I am not looking forward to this.
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Old Sep 14, 2008 | 08:44 PM
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I would apply Kroil for a couple of days in a row then try a reverse drill bit / easy out.
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