not really EFI-related, regarding compression ratio reduction.

[Andrew F. Gunnesch]

On Jun 25, 11:01am, Ed wrote:
> Subject: not really EFI-related, regarding compression ratio reduction.
> For X amt. of CC's increased in a combustion chamber, how many points of
> compression does this reduce? Or will such a formula not work?

Such a formula will work, but you must first know the original compression
ratio and the engine size, either per-cylinder or total/# of cylinders.

formula is  (static + dynamic volumes) / (static volume)

gets ugly pretty quickly, but can be done without a lot of thinking