Quote:
Originally Posted by Sailfish
Increasing the flow rate of the coolant may not help in reducing the temperature of the coolant. Too slow of a flow rate will allow too much heat to be transferred and too fast a flow rate will not allow enough time for the metal to transfer heat to the coolant.
Think of it this way-------if you have a bed of hot charcoal and you walk across, you'll get burned. However, if you run across it can be done without getting burned. It's all a function of heat transfer.
In a nutshell, I wouldn't change the pulley until the system was professionally evaluated to ensure optimization.
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No offense to anyone but this is not how thermodynamics and heat transfer works. Unless the pump cavitates, which is unlikely, more flow rate will always help accelerate heat transfer (from the engine to the water and from the water to the radiator and in turn to the air).