Jerry,

I hope that you are still following this thread. To follow up, the radiator has about a 4 pound cap. As I have mentioned, the thermostat had been removed. A couple of days ago, I ran the engine, collecting the fluid overflow, by passing the overflow tank. It started as a dribble, picked up to a steady flow and then tapered off to a dribble at about 150-160 degrees on the temp gauge. At this point, I pulled off the thermostat cover to re-install the thermostat. The coolant level was just above the top of the cylinder head. I have added about a pint of coolant that I had handy and planned to repeat the test, hoping that I can see the temp rise up above 180 (thermostat spec) and then see it drop back down. Does all this sound about right to you?

Hoping for some good observations from you,
Bob.


BobS46