I havent seen thos configuration anywere. I dont beleive it is normal. I havent changed impeller yet i just got the boat. I have changed water pump, replaced end gaskets on heat exchanger, manifold elbow gaskets
Morning i have a 1975 campion boat with a ford 289 and it overheats when under load. The thermostat is not in the block it is iine from the heat exchanger to the hoses. One going to water pump.i dont think this is right.