250x, 12:1 can I use pump gas or do i need race fuel

[welpracing]

I am redoing my lil sisters 250x and it needed a .050 pistion and honda discintued it so i had to go with weisco and it is a 12:1

can I use 93 octane pump gas and be fine with the compression ratio or do i need to get a higher octane.


anyhelp would be great. Thanks Brandon

[2muchquad]

I just finished my 250x,i went with a 74.5mm wiseco 12 to 1 piston and it runs fine on pump gas.;)

[Lonestar_R]

That would be the most compression you can run on 93. Anything over that would be a mix of 93 and race fuel. I run 93 in 06 450R which is stock 12:1 and it runs fine