Quote:
Originally Posted by jackal2000
only if need be. its kinda silly anyways considering the 3400 only has 2 valves. i figure i can gain approx 3% of power per 1 point of C/R increase. from my research, i learned that gasoline engines can run on pump gas (93 octane for me obviously) up to 13:1 C/R and diesel (your experience) is 14:1 and up. correct?
|
well higher compression does mean more power, it also means higher combustion temps, and anything above 11.5:1 93 octane is pushing it, you have to pull back on the timing to keep away from preignition. and you need to increase the cooling system capacity to keep up with the extra temps. and diesels normally run 20:1 to 30:1.