fifai

+1

Any ideas ?

MooreBoost

nice thread bump.

i think its 9.5:1

fifai

thanks...

i'm not sure but i've found that :

951 pistons are 20-25 cc
951 head chamber are 56 cc

but

944s pistons are +/- like 928s4 ones so maybe 20-25 cc too !
http://forums.pelicanparts.com/uploa...1298138880.jpg
https://rennlist.com/forums/928-foru...c-numbers.html
and 944s head maybe like 928s4 one or 944S2 one : 41 cc !

So i think that it won't be good for turbo application ! i'm scared that the CR will be the same that 944s one, so 11 or 10.9 ... ?

fifai

but with a 10.9 TC for 944s, 7.8cc for JDC, 41 cc for head i fund 13.5cc pistons ? ? ?

So the mix will give something like : 9.3/9.9 due to 20 or 25 cc 951 piston

it works with 951 pistons (20/25 cc), 7.8cc for JDC, 56 cc for head i fund 7.8/8.4

MooreBoost

you can run a higher cr with the 16v head.