Nissan 370Z Forum - View Single Post - Ok, another basic question (engine related)

mcphelps · 08-11-2009, 10:57 AM

The higher compression piston lowers the volume of the combustion chamber.

It's a matter of taking the 0.616 liters (3.7/6)of air/fuel mixure you sucked in on the intake stroke and compressing it into a space that now has less volume. Compressing 0.616 liters into the volume of a golf ball will have higher pressure than compressing into into the volume of a baseball.

08-11-2009, 10:57 AM	#5 (permalink)
mcphelps Base Member Join Date: Mar 2009 Location: Tucson, AZ Age: 66 Posts: 113 Drives: 09 Sprt/Tr/Nav PG M6 Rep Power: 16	The higher compression piston lowers the volume of the combustion chamber. It's a matter of taking the 0.616 liters (3.7/6)of air/fuel mixure you sucked in on the intake stroke and compressing it into a space that now has less volume. Compressing 0.616 liters into the volume of a golf ball will have higher pressure than compressing into into the volume of a baseball. Last edited by mcphelps; 08-11-2009 at 11:11 AM.