Re: thermostat function
The out side temp etc is besides the point, the internal temp of an engine need to be in a certain range for it to function properly. What head is on the engine or the compression I don't think matters. It's the engine temp not the radiator. If the lowest temperature thermostat that is readily available is 160 and your engine is running at 140 that would tell that your running 20 degrees under the proper operating temperature, would it not.
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