pistons that run on pumped gas

[450rboy]

looking into getting a piston here. I'm just wondering what everyones opinion is on what pistion they like.

[USAF Dirtboy]

For a 450r..12:1 is the highest that you can go with running pump gas (93 octane). But you still can run race fuel in it also.
I run 100 oct, but If i NEED to run pump I still have that option:)

[blakefoote]

Originally posted by USAF Dirtboy
For a 450r..12:1 is the highest that you can go with running pump gas (93 octane). But you still can run race fuel in it also.
I run 100 oct, but If i NEED to run pump I still have that option:)

well what about a 06r....it already has a 12:1 and on the quad it says that it recomends 93 octane or higher...could i get a 13:1 and run on pump?

[MR.BIG]

Originally posted by blakefoote
well what about a 06r....it already has a 12:1 and on the quad it says that it recomends 93 octane or higher...could i get a 13:1 and run on pump?

It also matters what cam you are running too. They say if you have a hrc cam and a 13:1 piston you might be able to run 93. I have a 13:1 and I run 105octane because I don't want to take any chances. 13:1 is also a huge improvement over stock!:macho

[2MuchChi450R]

You can run 13:1 comp on pump gas, it's just cutting it close. Mix a 50/50 ratio of 93 and 100, it should come out to about 97 octane.

I run a CP 13:1 coated piston that's custom shaped on the dome.

[xsr_racing28c]

i have a JE 13.1 piston and i'm running Rockett 111 fuel... i think its like 106 or 107 true octane..

[xsr_racing28c]

MR BIG: What are you running for jetting??