That's what I'm thinking Ambush.
Lew, I did not have the rad tanked. I did flush the rad both ways with a hose when I had it out.
I need to check the sensor next. Looks like the T-stat opens at 180*. I used my Fluke IR gun on the water jacket and got nowhere near 180* but I'm sure the iron takes a little longer to heat up.
I put this setup on my 1772 and I like it better because it gives a temp readout. It puts the sensor between the pump and the thermostat. I left the original one in under the hood and they read about the same.
DSCN1068.jpg DSCN1102.jpg
All good info guys.....Keep sending it and I'll let ya know if we get this thing fixed.