According to ford spec's @ 8.1 cr (as per manual) conpression tests read as nornmal @8.5 bar @8:1Comp ratio
The following are my results-

1-130.5 psi
2-130.5psi
3-130.5psi
4-130.5ps



I believe my Cr is 7.6:1 but the head has been skimed, is there a linear progression? ie -

7.2:1(ratio) =110PSI (Compression)
7.4:1=120Psi(compression)
7.6:1=130Psi(compression)
7.8:1=140PSI(COMP)

And so on and so forth..............

Thanks for you time.y



My Best , Tim.



it makes sense that