About overheating because water isnt spending enough time in the radiator to transfer the heat. I've heard that several times so it's understandable that this theory never dies. It's just contrary to physics and thermodynamics is the problem. If it were true then the high flow rate would also prevent the coolant from picking up heat from cylinder walls. Removing thw thermostat isnt a good idea, but its not because the radiator needs more time to hand off thw heat.