The bore and stroke of the two banks are the same, and the engine has a supercharger, so why is there a difference in compression ratios
Doesn't cylinder head volume also enter the equation?
I also came across this interesting CR nugget a few years ago, but have never found an answer as to why. I even asked the question once of a bod who was climbing into a Gustav in order to fly it, but he didn't know either.
I await results with interest.