Ian P. wrote:It would be interesting to know if this could be higher or is it limited by the geometry of the combustion chamber..??
I understood that a number of years ago that the NASCAR engines were getting up over 15 to 1 until the rules police called "Enough" and imposed a limit.
Way back in the 1960s - 1970s American pushrod V8s were running as high as 14:1 (for drag racing) and I (VERY vaguely) recall that Ferrari 3 liter V12s also ran in that same range (?)
Anyone have a complete set of Racecar Engineering? There was an article in there about the Ferrari V12 and how Honda helped them develop it (really).
Enzo Ferrari was a great man. But he was not a good man. -- Phil Hill