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Exhaust Manifold to Header Studs - spec - thread damage? 200 1988

posted by  tbb2 on  Wed Mar 30 09:12 CST 2011
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last visit: Wed Jul 16 18:57 CST 2014
[RELATED]

The studs I see on FCP Groton look like the manifold to block studs (8mm?).

The manifold to header pipe is 10mm.
-----------------

My manifold to header pipe studs came out as well.

The point of the threads look like they have sheared or corroded (?) away - where the point would be it is fairly flat.
Are the stud threads that mount into the exhaust manifold pointed or flat?

Does anyone have a manifold to header pipe stud size replacement specification?
I'm assuming I can replace these with bolts.

I had a suggestion that the manifold threads needed to be tapped to clear them out - if they are correct in thinking the corrosion of the studs has clogged the female threads.
I suppose to get a pointed thread replacement that will be necessary anyway.

1988 244 DL






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