Posted by chriscase on Saturday, January 01, 2005 at 3:31PM :
In Reply to: Might want to retorque your head ? posted by chriscase on Saturday, January 01, 2005 at 3:25PM :
The restriction of a thermostat makes a pressurized cooling system in the block. The water pump at 45mph makes more pressure than a pressurised radiator cap would. This prevents steam pockets from forming in the block, which can cause hot spots.