A lot of folks want to run their engines too cold. 180 is good. The "tractor fuel" engines of the past had to be up to around 200 to get the fuel to vaporize and burn right. That's why you started them on gas and when warm shifted over to tractor fuel. The Allis Chalmers owners manual spells this out. I would want any gas tractor engine from the 30 on up to run at 180 degrees. Maybe the earlier ones too. Wear is less and combustion is better at a good warm temp. Maybe under extreme hot temps like 100 and up and continuous high load a 160 thermostat. Same for extreme cold, I might say a 200 degree.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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