Originally Posted by
tosh
One goes to the coolant temp sensor at the back of the head by the dip stick tube and the other goes to the heater matrix pipe (the bottom pipe of the heater matrix).
All from memory though so don’t shoot me down if wrong
thanks but what I'm really trying to establish is where abouts the water that leaves the modine re-enters the coollant system. does the water that flows through the modine travel through the rad (in which case it bypasses the thermostat and thus reduces the overall control the thermostat provides) or does it re-enter the system after the rad (for example just before the pump) in which case the modine water bypasses the rad and thus reduces the overall cooling capacity of the system as a whole?