Quote:
Originally Posted by JonW124
I owned a 540 cubic chevy engine that used the same thermostat I'm using in my Om603 now. My 540 BBC made 685 hp to the wheels and creates a ton of heat. I understand diesel engines create a lot of heat and the turbo really adds to that. But I drag raced that engine and drove it hard and that small thermostat had no issues. The point I was trying to make about the Thermostat size is that it doesn't matter if the cooling system is efficient.
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What you're saying is that a higher flow restriction is not a problem, but that's not a true statement. We could get into the diameter of the hoses, the pump size, the flow rate of the coolant, etc. The size of the thermostat DOES matter when you're keeping everything else the same outside of the size of the thermostat.
You cannot compare a V8 gas engine to a 3L diesel just by saying "same same," nor can you compare a daily driver with a car designed to drag race.