Posted for "Richard Freilich" <rfreilich@sbcglobal.net>:

 Scott,
 
 
 
 I believe the formula should be 1 revolution consumes 0.5 x 360 Cu. In.
 since it takes two revolutions, not four, to complete a cycle.  Suck,
 squeeze - one, bang, blow - two.  The number of cylinders is of no
 consequence.
 
 
 
 Richard Freilich