Hi All, I got my 235 engine installed and started up after about 3 years. It is a used engine that had good compression and ran good. Before installing it I ran the engine on a test stand and it ran fine. I installed the engine and after getting the engine up to temp I noticed a little weeping from the top radiator hose. I am using reproduction clamps and they are pretty flimsy. The temp got past 210 and I shut her down and she began to spew coolant from the expansion pipe. I notice that the top radiator hose was cool while the bottom one was hot. Does this mean the thermostat is not opening? I am sure it is a new thermostat. Also, the top of the radiator was not too hot and if you made an imaginary line down the center of the radiator it seems like one half was not hot at all to the touch. Once I turned the engine off and it was overheating then everything got pretty hot. Does this sound like a thermostat issue or a pump? It have a new pumps and radiator was cleaned a while ago. I also had done the 235/216 water pump conversion to raise the fan to the center of the radiator. Before this 235 I ran a 1939 216 (with this radiator) and even in 100 deg temp the engine never got above 190. That 216 ran like a watch, albeit at 45mph but ran like a champ. I am hoping better things from a 235.
