If the normal flow of water through the block is from lower radiator to waterpump,through the block and then out the thermostat housing, wouldn't taking the dicharge off the water pump into the bypass cause a peoblem ? shouldn't it be the suction side of the pump ? You would have water trying to leave the thermostat housing to return to the radiator fighting the positive pressure of the water
pump dicharge ? The reason I ask, is I had a heating problem when I first started my engine with the hose running to the bypass in the thermostat housing. As soon as I pluged off both ports on the punp to eliminate that being a problem, the heating problem went away. Wazupwidat ? Thanks for responding because I am at the same point.