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I have removed my passenger side exhaust manifold on my stock '72 350 to fix an exhaust leak at the Heat riser.
There is no sleeve in the pipe to center the donut...should there be?
Hello all. I’m seeing the same issue. Today I put the car up on blocks to start looking at options for mine. Watching this thread for advice.
I’m faced with same dilemma. Should search the Internet for a spacer which I have yet to find for a 77 or replace the gasket and or donut as needed.
also something else I noticed this evening when I crawled under it. It looks to me as if the exhaust manifold has a few cracks in it. But I cannot tell if they go all the way through or not. It may be they are just on the outer edge.
Please look at attached pic and give advice.
thanks all.
Last edited by therunningman2012; Jun 28, 2021 at 06:45 AM.
Reason: Change
Someone has put thick head-to-manifold gaskets in there...and then cranked the he!! out of the bolts to crack the casting. Not sure what issue they were trying to fix. With engine idling, see if there is any exhaust coming our of those cracks. If not, ignore them. If they actually leak exhaust, replace the exhaust manifold.
P.S. GM did not put gaskets under those cast iron manifolds. The heads and the manifold surfaces were flat enough to seal leakage.
Hello all. I’m seeing the same issue. Today I put the car up on blocks to start looking at options for mine. Watching this thread for advice.
I’m faced with same dilemma. Should search the Internet for a spacer which I have yet to find for a 77 or replace the gasket and or donut as needed.
also something else I noticed this evening when I crawled under it. It looks to me as if the exhaust manifold has a few cracks in it. But I cannot tell if they go all the way through or not. It may be they are just on the outer edge.
Please look at attached pic and give advice.
thanks all.
My 77 didn't have a donut or sleeve on the passenger side. New exhaust manifolds are cheap but getting the old one off can be a challenge with bolts snapping off.
Leaking Heat riser question
