John and everyone else who replied, thank you! That clears up what
determines compression ratio. A follow-up question specific to
Roadsters - in the R20 "stroker" motor, what pistons are being used -
H20 or U20? I assume the domed U20 pistons would produce a higher
compression ratio than the dished H20 pistons.
Do you have to use H20 crank/rods/pistons or U20 crank/rods/pistons or
can you do some mixing and matching? (H20 crank, U20 rods/pistons,
etc.)
--- John F Sandhoff <sandhoff@csus.edu> wrote:
> Also note that the R pistons, with their domes, intrude into the
> chamber area, effectively making it smaller (and thus raising CR), By
> the
> same token, the dished H20 pistons make for an effectively larger
> chamber and thus lower CR.
=====
Adam
'70 1600 SPL311-28181
http://www.picturetrail.com/abend
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