Resurrecting the main topic here - "tired of exhaust leaks ..." and in my case intake leaks on my '55 Early Series. Having mounted the muffler and not getting any lower decibel noise level - I pulled the intake and exhaust manifolds off. Spray & rev reveal all three intakes leaking and maybe the "collar" (?) carburetor sits atop.

Pictures show plenty of sources for intake and exhaust manifold leaks (gasket "wear" - maybe 30 driven miles and a few hours of carb adjustment on the rebuilt motor). "To machine or not to machine?" - that is the question. Leaks across the manifolds. While the manifold metal facing seems smooth - there is some concave / curvature noted by blue tape in picture. Not sure there is a lot of base to machine on the exhaust ports.

I noted the REMFLEX suggestion earlier (PN2027 looks to be a one-piece replacement on the 235).

Opinions on machining?
Attachments
Intake Collar - Top.jpg (211.3 KB, 246 downloads)
Exhaust - Concaveness.jpg (414.71 KB, 245 downloads)
Gasket (Head Side) - Right.jpg (116.47 KB, 246 downloads)
Gasket (Man Side) - Right.jpg (317.81 KB, 245 downloads)
Intake - Right.jpg (106.95 KB, 244 downloads)

Last edited by Phak1; 04/15/2023 12:19 PM.

'55 1st 3100 (restoring)
'63 Chevy C10 w/327 (driver)
'31 Chevrolet 2 Door Sedan
'66 Chevelle Malibu (396, Turbo-400)