Quote:
Originally posted by island911
"does it get hotter for a bit " No.
The total heat energy of the engine does not increase, once shut down. The water, local to the head, (maybe even external surfaces) may see a temp rise, (compared to when pumping) but the engine has not increased in overall temp.
edit: . . . it's a "transient heat" thang.
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right. the only thing getting "hotter" is the head and the coolant temp sensor. but you're correct, it's not like the engine is acting as a heat sink.
the only thing i know that gets hotter is the cast iron manifold will transfer some heat into the aluminum heads after the car is shut off. but in turn, the manifold gets cooler so the overall heat does not go "up" so to speak. the existing heat just goes to a different place and that place is usually close to where the temperature sensor is.
obin