Does anyone know the standard CR on a 14nv vauxhall engine (1.4SR standard issue) and the CR on a 14nv block mated to a 1.2 carb cylinder head? Also, does anybody know the difference in valve sizes between the 1.2 and the 1.4? I know you can't make any assumptions on CR, but i just want a ballpark figure so i can get a gasket made up to acheive approx same CR as the 1.4 head, but with the 1.2 head (as i know 1.2 head is higher CR but not sure how much)
I would also like to know if anybody has any indications on the limit of the 1.4 con rods, as i don't want them snapping :P
im not too sure on the data, but my 1.4 carb has a 1.2 carb head on it and its cr*p. i cant get it to stop pinking. although this may be because it has been skimmed and the compression is now too high.