Quote:
Originally Posted by renault_megane_dci
Prius is only 13:1 static.
This gives 8.2:1 dynamic with the advanced cam phasing but only 6:1 with the late cam phasing.
On the GPZ (pretty much set on this now) I was aiming for restoring the standard dynamic CR wich is 7.261.
|
Don't forget that when your motorcycle engine is at peak torque, the intake and exhaust are "in tune" and VE is 100% or greater, your dynamic compression will far exceed 7.26:1. Tuned intake and exhaust harmonics effectively supercharge the intake charge, resulting in a dynamic compression ratio equal to or even greater than static compression.
The Prius cam phasing and intake/exhaust design prevents this from happening.