Trouble Starting my ZXR 250C

[Wenier]

Since I've been running my bike on 91 it has the same consumption, but revs way easier now and doesn't backfire anymore. Better for my bike and cheaper. 91 burns hotter and faster than 96. Faster good for very high revs and hotter is good for cleaning plugs. Then again it depends on which fuel the carbs have been tuned with.

My old one ran on 91 or 96 or higher fine, but if your using 91 and its a high revving bike (19000RPM) then you have a higher chance of detonation with the lower octane rating so youll need to be careful with that.

[Phenoix]

Im running 91, and it seems to run fine. Tho it does heat up if left idling in traffic (Damm Auckland)
As for the a model vs C, I've been told the A has wider wheels and is about 30Kg's heavy, so that would make the C run faster due to the lower weight

[R6_kid:Me]

hmmm, im running on 91, thats what the mechanic said to do. Also doesnt the power drop off kinda sharply after 16k anyway so you souldnt be reaching 19k unless ur a fuktard that wants a piston through your tank (now thats sure to attain detonation!!!