1939farmall
Member
Just wanted to give an update on the stuck Farmall M engine I?ve been messing with for the past month. After letting it soak for several weeks periodically rocking it, tugging on it, prying on it, and keeping pressure on the crank I came up empty handed it remained stuck. So I decided to pull the head off and take a look. Cylinders 1,2,and 4 look great! Cylinder 3 is a ball of rust! I don?t think it was ever going to come loose with out being disassembled. I can?t see how it was free a few months ago. The exhaust has been covered the whole time so I?m not sure what happened. It sure looks like the head gasket leaked to me. The other interesting thing I found is that this engine has a 4 inch bore with stepped pistons so I assume someone rebuilt it with a Super M kit in the not too distant past since the book says a stock M should be 3 7/8 inch bore with flat top pistons. So we will need 1 sleeve, probably a set of rings, new head gasket, a couple of hoses and belts and see if it will run! I?ll post another update as we find time to continue.
