The fact is you need to read up on cooling an engine before putting in your 2 cents. You may be able to run some old, tired engine with no thermostat, but you will not run any high-performance engine that way. Thats like saying you don't need a fan. If the water doesn't stay in long enough to pull out the heat why would you need to cool it at all. I don't mean any disrespect but, just think about it. Or are you being funny. LOL