Originally Posted by
GNs-r-slow
It takes MORE nitrous on a high compression motor than it does on a low compression set-up. Higher compression motors have more heat geneated in the cylinder which takes more nitrous to get the cooling effect. This is why high comp set ups can run 2,3,4 stages with a total of 750+ on the nitrous. Come out to a couple big races with us and you'll shake your head at some of the B.S you've heard flyin around
i personally see no need to run 3 or 4 stages... typically, at most its been 2, or a controller. the thought is you have the 1st stage to maximize the hit and not blow the tires off and then the 2nd stage rolls on and your going. hitting the gas after 150' or so is just lookin for some MPH or doggin someone.
and nitrous'
BIGGEST misconception is it cools...it cools the intake charge...that is it...wanna run an intercooler nitrous sprayer, rice on! once that nitrous gets past that intake valve, thats it...more cylinder pressure means more compression which means more friction which means more heat. whatever cooling you had in the intake tract was completely negated the second it gets in the cylinder.
nitrous usage is not dependant on compression either...its dependant on how much those little jets can squeeze out. all nitrous does is add an extra molecule of oxygen into the equation and changes the oxygen content.
roughly atmosphere is 80% nitrogen, 20% oxygen...N2O is 66.67% nitrogen, and 33.33% oxygen...this is typically why N2O is used its hazard is minimal and gains are significant....hypothetically speaking...you could use 100% oxygen, and theoretically achieve 5x the horsepower of the equal atmospheric motor....but you keep that fire hazard to yourself.