OT An interest in hemi engines stirred me, and I found this site
which gave as the advantage of the hemi that 2 valves could be placed
opposite each other, instead of next to each other, and thus could be
made bigger, for more power.
I had assumed that the advantage was with fewer corners, etc. in the
combustion chamber, there was less chance of power-losing knocking.
OTOH, now it occurs to me that if the combustion chamber is domed, it
might be bigger than one with a flat top, leading to a lower
compression ratio and less power.
So why are hemi engines powerful?
BTW The last time I posted off-topic, a couple nervous Nellys thought
it was spam. It's not.