Charlie and Tupper England wrote:

The geometric definition of displacement is the max volume
of a chamber. Period!

(snips)

Hate to 'pick nits', but I thought the definition was the volume
displaced by the piston (for piston engines) when moving from BDC to
TDC, & changes in piston crown, combustion chamber volume, spark plug
reach into the cyl, etc. would have no effect on displacement.

Enlighten me if I'm mistaken.

Charlie

You are correct Charlie. The above is an over simplification.

Paul Lamar
 
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