Hi Pete.
I worked through this calculation recently. Not looking at head thickness,
but how much to shave off to get a given compression ratio. I assumed that
you would be removing a "disk" of volume from the combustion chamber of a
given height. I believe the relationship is close to linear, but not
precisely. Since the combustion chamber is curved, the "disk" is slightly
smaller at the top than at the bottom. You'd have to know the chamber
geometry to be precise about it. Calculating this way would give a slightly
lower actual compression ratio compared to the calculated.
Regards,
Hugh Fader
> That all seems convincing enough, but the trouble is I don't know if
> the relationship between head thickness and compression ratio is
> linear. If it's not, then I don't think my numbers are accurate.
> Despite all that figuring, I really and truly belong in the home for
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