Hello
I got this force 50 recently as a project motor. The motor is unusually clean. the cylinders have about 100 psi compression in them - not spectacular, but it should run. next I pulled the head and this is what I found (links below). the cylinders are cross hatched and the heads have little carbon on them. it seems like this motor was recently rebuilt due to an overheat, a problem with these engines. seems like it overheated because the thermostat is jammed WAY open. the motor seems like it could run for a little more though. one thing - does anyone know how loose the pistons can be in this type of motor? they seem a little to loose to me. what do you think? also, does anyone know who this motor is made by? It says US marine power all over it, but no indication of merc or chrysler.
https://drive.google.com/file/d/1kJTfq3BnVPC0CuKxyJUoDkgJqUeFV6kx/view?usp=sharing
https://drive.google.com/file/d/1JMtLGGIh6C8H7KFOyoV1Hrl-BUFYm8bE/view?usp=sharing
https://drive.google.com/file/d/1pCy2dwrtZqQd4ytqGAK4YcBdxD5QgIhP/view?usp=sharing
https://drive.google.com/file/d/12hSCIz36Sh5xMqYY9LZdmDeGYlU54qGb/view?usp=sharing
I got this force 50 recently as a project motor. The motor is unusually clean. the cylinders have about 100 psi compression in them - not spectacular, but it should run. next I pulled the head and this is what I found (links below). the cylinders are cross hatched and the heads have little carbon on them. it seems like this motor was recently rebuilt due to an overheat, a problem with these engines. seems like it overheated because the thermostat is jammed WAY open. the motor seems like it could run for a little more though. one thing - does anyone know how loose the pistons can be in this type of motor? they seem a little to loose to me. what do you think? also, does anyone know who this motor is made by? It says US marine power all over it, but no indication of merc or chrysler.
https://drive.google.com/file/d/1kJTfq3BnVPC0CuKxyJUoDkgJqUeFV6kx/view?usp=sharing
https://drive.google.com/file/d/1JMtLGGIh6C8H7KFOyoV1Hrl-BUFYm8bE/view?usp=sharing
https://drive.google.com/file/d/1pCy2dwrtZqQd4ytqGAK4YcBdxD5QgIhP/view?usp=sharing
https://drive.google.com/file/d/12hSCIz36Sh5xMqYY9LZdmDeGYlU54qGb/view?usp=sharing