Max compresson for 91 octane?
#2
alot of things affect highest compression you can use with XX octane with no knocks (very little) or detonation:
ambient temperature, temperature of coolant, quish of head gasket, Timing on the car etc
ambient temperature, temperature of coolant, quish of head gasket, Timing on the car etc
#3
Static compression doesn't dictate what octane fuel you run - it's the dynamic compression that's more important. Check this article:
http://www.hotrod.com/pitstop/hrdp_0...ion/index.html
And this one:
http://www.empirenet.com/pkelley2/DynamicCR.html
http://www.hotrod.com/pitstop/hrdp_0...ion/index.html
And this one:
http://www.empirenet.com/pkelley2/DynamicCR.html