[Fred]

Originally Posted by Joe K

Guys, you're all treating this like he's going to have problems.

In actuality, with the higher compression ratio, he'll have a more efficient engine and actually have less heat release.

I.e. more energy of the fuel gets turned over to moving the car instead of heating the air that goes through the radiator.

As to pressurizing the system - do that if you want, but you will gain only some more margin against boil-over - and a higher cylinder temperature which may aid combustion efficiency slightly. And will reduce cylinder wear slightly. (We're talking the difference between 160F and 200F here.)

A 10 fin radiator is serious overkill for this instance. And may in fact impede cooling. There is (as yet unstudied) an optimal distance for fin spacing: at some addition point more fins does not equal more cooling.

So use it if you have it, but if you have a 7 or 8 fin I wouldn't sweat it - and maybe save the higher number fins for those cars who really need it?

And where you would seem to be headed...

Joe K

Really ??