Quote:
Originally Posted by OrdnanceMarine
Your explanation looks good to me!  One little tidbit that doesn't really matter to our application but I'll include anyway: Getting a cooler (more dense), more energetic (since more fuel is added to match the extra air) charge burning inside each cylinder produces a corresponding amount of extra heat. The cooling capacity of our engine is more than adequate to handle this small amount of extra heat but if you were to add a lot more air/fuel (i.e. turbocharge, etc.) you could bump up against this limit. I intend to find it this summer with a drive to Death Valley in early July (hottest time of year).
The reason the intake manifold doesn't make a lick of difference in dissipating excess heat is that it takes way too long for the heat to move into the manifold. Any signifigant rise in cylinder temps during a hard run would transfer to the coolant long before it had a chance to make it to the intake manifold.
Now, if you've shut down and want to cool off your engine enough to work on it and you've raised the hood and maybe put a box fan in front of it, the engine with the intake manifold gasket WOULD NOT dissipate the heat as quickly as the stock setup, meaning you'd have to drink an extra beer or two while you wait for it to cool down or you get drunk enough that you don't feel/care about getting burned.  |
Thanks. I appreciate the static cool-down scenario. Nothing quite like automobile mechanical mods that drives a man to drink.