How much power is compression worth?
How much power is compression worth? How much power is compression worth? Say a 450 rwhp H/C 346 with 11:1 compression. How much power would the same H/C 346 have with 12:1 CR? 13:1 CR? I think I remember reading that it was ~3% per full compression point, is that about right?
Thanks, Shawn
Thanks, Shawn
Shawn 
Its not quite that simple. It is not a 1 to 1 ratio. What I mean is that going from say 8:1 to 9:1 might yield you a 5% increase, going from 10:1 to 11:1 may give you 2 or 3%, and then going from say 13:1 to 14:1 will only net you say a 1/2% gain.
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Originally Posted by Classic
Its not quite that simple. It is not a 1 to 1 ratio. What I mean is that going from say 8:1 to 9:1 might yield you a 5% increase, going from 10:1 to 11:1 may give you 2 or 3%, and then going from say 13:1 to 14:1 will only net you say a 1/2% gain.
What about how it affects power under the curve? I can tell a big difference between an 8:1 motor and a 10:1 motor. More than just the peak numbers would suggest anyway, but I guess there is no real way to put that into a rule of thumb.
