Have all my parts, now going back together. The head came out very nice, used a thick glass surface and 220 grit paper. It took about an hour to get it where I wanted it, but it is FLAT and smooth. I flattened the cover side as well. Super curious to see how much the compression has improved.
Bingo....... a few of the head bolts were barely over finger tight! Obviously the gasket shows it's been compromised. The thermostat is also frozen solid "closed". And bent? Probably from heat. The good news is, the cylinders look to be in awesome condition. Good cross hatching and no visible...
I bought this boat and motor used. I decided to replace the water pump before I started the motor, just as a precaution and not knowing it's condition. Took it to the lake today and it started on the second pull and ran perfect. Idled good. I pulled away from the ramp and accelerated the motor...