race gas jetting?

[HiG4s]

I finally found a place around here to get race gas, of course it was right after I got the bike jetted to run decent on pump gas. Anyway, if I run 50/50 race gas should the bike need to be jetted richer of leaner, or should it stay close to the same?

Thanks

 

[IBWFO]

moct race gas will make your bike run richer, but oxygenated fuels run leaner.
Just run the bike and do some plug readings.
regards

 

[Rich Rohrich]

The answer depends on what is in your race gas and what is in your pump gas.
Going from most pump fuels to a non-oxygenated race fuel will usually allow you to lean the jetting across the board IF the distillation curve of the fuel is a reasonably good match for the application.

Post some of the details and we can probably help you narrow it down a bit.

 

[HiG4s]

It will be a week or so before I start using the race gas, but your answer gives me what I need to know. I will just leave the jetting where it is to start with. I just wanted to make sure I didn't need to jet it richer before I switched gas.

thanks