CR and pump gas question

flyfish said
Actually, this is rather in basic metallurgy and thermodynamics.....I suggest you do some reading.

You are correct, all of these factors impact detonation...along with the head material....and many other factors.

I've done the reading. And also the testing. Again, head materiel is about the last factor in compression ratio.

I can run just as much CR on iron as I can aluminum. It's that simple.