Quote from: "rumrumm"I think I may try to modify my 180 thermostat by drilling two 1/8 inch holes in it and see if that drops it 10 degrees. I saw this mentioned on another website some time ago. I'd rather be running around 200 degrees than 210.
I had a few problems with my 180 degree thermostat and widely fluctuating temps. To me it seemed too '*'; either open or shut. I read about the 1/8" hole idea as well. My 'theory' is that it traps an air or steam bubble under the thermostat and it therefore remains closed until it suddenly snaps open and a ruch of cool water comes through.
Anyway, I drilled the 1/8" hole and it improved. Later, I fitted an overflow tube and that made a big difference. This is a similar issue, as the design of the '32 radiator does not allow it to be completely filled you end up with air over the top tank. This air is compressible; unlike water. So, when it shuts down the air expands and forces some water out. More air makes it worse.
Anyway, to cut the rant down, the combination of the 1/8" hole and the overflow tank made a tremendous difference. The temp is much more stable and it does not 'burp' water.