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Old 10-25-2013, 10:11 AM   #11 (permalink)
Joggernot
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Quote:
Originally Posted by ksa8907 View Post
Theoretically, yes but the problem is production engines are made to run around 200f and when you go much beyond that the pistons tighten up more than normal because of thermal expansion.

Now, if you hand build your own engine and design it to run hotter, sure you'll probably see a gain.

Run some numbers through the equation and you'll see you need a significant increae in temperature to realize a gain.
+1
I have done this on a 1982 Honda Accord (Wash DC area) and it worked as long as the engine didn't overheat. I have seen wrapped/insulated exhausts, and full engine insulations done with a thermostat set for 250°F + and new hoses(!). I don't know what pressure the radiator is designed for, so overheat/overpressure could be a problem there.

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