View Full Version : Compression Ratios
What does a compression ratio really tell you, what is being compared? And are engines with low or high compression ratios the ones that a prime for F/I? Like i know the new Si with the K20 is 11:1...what does that mean..is that good for turbo?
vabeachgirl
10-14-2005, 12:09 PM
:google: is your friend....
from http://www.autocenter.com/about/:
compression ratio
the ratio between the combined volume of a cylinder and a combustion chamber when the piston is at the bottom of its stroke, and the volume when the piston is at the top of its stroke. The higher the compression ratio, the more mechanical energy an engine can squeeze from its air-fuel mixture. Higher compression ratios, however, also make detonation more likely.
Broliman
10-14-2005, 02:39 PM
ewwwww detonation... scary. that is what my nightmares are made of.......
kitty
02-15-2010, 08:25 PM
ewwwww detonation... scary. that is what my nightmares are made of.......
to advoid detonation use a higher octane rated fuel