Race gas to pump gas, what do i need to change

[MX450]

Ok, my wallet doesnt like 10 buxs a gallon for VP, so id like to switch to pump gas.

Ive got a cool head do i just need to change the dome? What cc dome do i get?? also what other factors affect it? What will i need to do with jetting?

Thanks.

[250r4life]

well, i guess it depends on what your current set up is...

what made you think you had to run straight race gas in it before? did the previous owner tell you it needed it? whats your compression? what dome do you have in it right now?

[MX450]

Yea the guy i bought it from said it needed race gas. Its got a trinity racing port/polish, 265, not sure what cc the dome is, and there is a sparks sticker on the carb, not sure if sparks did anything to it, but its on there.

[250r4life]

your 1st step is to do a compression test and see what compression you are running...