Well this 3b runs cold. Even after 20 min at 1500 rpm (hand throttle), the coolant is still only 135 degrees. That is with the front and rear heat on as I am trying to get the heating system working well for winter. Previous owner froze every winter. I found the front heater valve would only open a little and the rear was frozen shut and the rear blower did not work. All that is working great now, but the engine runs cool. Even put the winter radiator shield down. It has an aftermarket 82C thermostat that I checked in a pot of water with a candy thermometer. If anything it opens wide at about 90C. Either way the engine wouldn't get hot enough to open a thermostat anyway. It has a turbo as well. Any thoughts.