Anyone who know the combustion chamber size for the ABF head, (and maybe for the 9A, KR and PL heads as well)?
max_torque
14-11-2005, 08:49
You really are better off measuring what you have, production things like core shift and valve seat height all affect combustion chamber cc significantly, and on a high CR normally aspirated motor you find that an extra 1cc is usually something like 0.25 to 0.5 CR difference, which is a lot! aim to get all chambers balanced to within 0.2cc at worst. Rob T or Bill (ibizacupra) are probably the best people to ask for actual chamber vols.