Re: 1957 FD11 Johnson questions

[shoestringmariner]

Thanks Fleetwin. I hear what your saying, but why is it so tight with the plugs out? New impeller? I can seriously only pull this motor over two revolutions its that tight.
No signs of overheating. The head has been off at one point (paint off of bolts). I wondered about the gasket, but assumed they go at the thin section between cyls. I didn’t consider it blowing out the side. Are you thinking the rings are stuck?

If I dont hear back from the PO about an exchange, I’ll barrel test it and recheck the comp. I did the comp test twice last night, same results. My tester has worked fine on other motors in the past…my continental welder engine is +/- 150psi across the board, so I know this gauge shows pressure