4.11 and Engine Overheat

[Bolelas]

Not a question about the game itself, but as real life aircraft behaved: In a dive, in a over-rev situation (lets say i cut throttle but forgot to pitch back), does the plane heat the same way as if i was adding more fuel? (with less pitch). I know compressed air heats, plus there is fuel going in (the idle fuel), and also friction, but should it overheat slowly?
Hope you people can understand question, because it is a little confusing.
I have not much knowledge about engine, just what i read in foruns, books etc. Also in the spitfire manual it says that in a dive they could do a little over-rev, but had to add at least one third of throttle : Was this to lubbricate pistons?