5.7 manifold errosion

[cdavisdb]

Thanks all.

I suspected a mismatch involving the gasket or in how it sealed. The manifold side is perfect, the problem only on the engine side and on both sides of the engine. The old gaskets did not separate the two center exhaust holes, which I thought was strange. I'll check tomorrow and try to see how the old gaskets went on and how the new ones will. Old ones are some kind of tough, fiber mat encased material. New ones are more like paper. Maybe I can trim the gasket to fit better around the eroded space.


Engine is fresh water cooled. I had envisioned the possibility of eroding through and allowing hot gas to escape to the outside. Never occurred to me that it could erode or crack into the water jacket. Ugh!