[PAUL SS]

Originally Posted by stieger

Yes, forcing air into the engine bay without having any means of letting the air escape will cause problems. Imagine that your pumping air into a pressurized tank, normally these tanks have a blow off valve so that the excess pressure can escape. Without heat extractors you're running without a blow off valve. If you continue to pump air into the tank, it will eventually explode.


EDIT: as the above poster mentioned, it *may* not be enough air to matter. But the same principle applies.

However the engine compartment is not a sealed vessel that can maintain any kind of pressure, there is lots ways for air to escape. I do think hood vents would be a good idea as heat rises and they would provide an easy, natural exit for the heat. I too like the idea of making the mailslot somewhat functional.