1955 235 engine.
I start to get close to operational and something else happens. Finally got the engine timing down and more recently a new carb insulator block, stared up the engine and noticed that by the time engine temp reached ~160, coolant was flowing out of the overflow tank (this had not happened before). So I ran a compression check, figuring a blown head gasket. The numbers ran 91/92 psi with one at 90 and one at 94. This is an older engine but I did have the head off recently and it was fully checked out, including magnaflux. Are these numbers OK? I put every thing back together again and started the engine, with the over flow hose draining to the ground where I could see it (not into the overflow tank). Within maybe 30 seconds, coolant stared pumping out of the hose - clearly not an over-temp problem. I did not notice any smell of exhaust in the coolant flowing out. Does this sound like a head gasket? Anything else I should check? Where do I go from here?
Bob
