In a message dated 6/15/2003 7:34:12 PM Eastern Standard Time, skyweel@earthlink.net writes:

> Last time I checked, cubic inch DISPLACEMENT includes only the swept
> volume as George says. Pop up pistons, etc. only change the FIXED
> volume above the piston. Displacement happens only when the piston
> moves up in the cylinder, displacing cubes as it goes. It
> is calculated
> simply by multiplying the cylinder bore by the stroke.

Doug,

Whew!  Thanks, now I feel better - I get higher compression and I don't lose any cubes.  Actually, I got it - It is just like shifting the same stroke a bit up the cylinder, stuffing the charge into a slightly smaller space.

Scott Krueger

The confusion is lessening!