compression

[IceFireBanshee]

Hey guys, been looking for a chart that i saw on here a year ago that shows what fuel octane is needed per compression does anyone know where it is? Thanks Josh

 

[GrMeyer]

found this on a Rat rod site

 

Atmospheric pressure is approximately 14.7 psi.

 

(ballpark estimates):

 

8:1 - > 102.9 psi

8.5:1 - 102.9 > 110.25 psi

9:1 - 110.25 > 117.6 psi

9.5:1 - 117.6 > 124.95 psi

10:1 - 124.95 > 132.3 psi

10.5:1 - 132.3 > 139.65 psi

11:1 - 139.65 > 147 psi

11.5:1 - 147 > 154.35 psi

12:1 - 154.35 > 161.7 psi

Edited April 24, 2009 by GrMeyer