Re: thermostat
What engine? Thermostats were put there by the factory to regulate engine temps and insure that the powerhead heats up to normal temps. There are a couple of concerns regarding running without thermostats. 1. The stat acts like a restriction in the water system. It forces the whole engine block to fill completely with water before any of it exits into the midsection. This way, the whole block gets cooling water. If you have not stats, the cooling water can escape the block too quickly and might cause hot spots in the block, esp at the top of the engine. 2. Running with no stats can cause the engine to run too cool. Cool running engines have poorer combustion. This condition can cause long term issues. Cold running engines tend to accumlate carbon around the ringsets quicker than a warm/nomal running engine. Carbon accumulation can cause starting issues, poor fuel economy. Worse, it can cause a powerhead failure over a long period of time if too much carbon accumulates on the rings. Run the thermostats.
