There is no way that the aluminum head can dissipate heat so fast as to reduce local combustion temperature to reduce detonation.
Aluminum, thermal conductivity 136 btu/hr
Cast iron, thermal conductivity 46 btu/hr
So, aluminum triple thermal conductivity as cast iron, but no difference in operation?
That would be a no.
Don't get me wrong, you are stating the advantages of an aluminum head over an iron head is....?
And I agree in terms out output, iron comes out ahead everything else equal because of thermal efficiency, but it would also put a specific combination closer to detonation on a specific fuel.
Can't have it both ways. Thermal efficiency is keeping heat in the chamber (=power) but that can aggravate detonation sensitivity on pump fuel as well.
A general thought of a point in compression is not the definition of working miracles, it's general understanding of thermal conductivity between two different metals.
