Well I got the mystery plate off and Frank was right. Not much to report. Just a large open casting. It did have a rather large hole from the main water exhaust that probably cools off the exhause on the way out. On the bottom anothe small vent. Everything clear. No real carbon buildup, no mice homes or dog food reserve.
So my only hope at this point is the new gasket. What is the best sealer for it and the new head gasket? The old standby, OMC gasket sealing compound?
