Originally posted by: 2phast4u
my friends races dirt bikes and hes throw about 4 G's into the motor he racesall over the place he had everything possible done to this thing its sweet he has a track in his backyard and everything he dads buys the aircraft gas he said its lik $40 a gallon or sumthing

Originally posted by: quadsnsleds
I just love this topic. Anyone who runs a higher octane fuel/gas than is needed for their engine is just pissing away his/her money. The thought that running "race" gas in a stock compression engine is going to give out more power is foolish. All the octane rating of any fuel amounts to is its resistance to burning. If the engine doesn't have sufficient enough compression, (not meaning your engine needs a rebuild either) just that for example an engine with 8.5:1-10:1 compression will see no benifit at all from "race" gas. Good ol' 90-94 octane pump gas is plenty good enough. The only exception to this rule is a stock compression engine that has had its timing advanced to the point where "race" gas would be needed.