RACE GAS

[dstollys]

im rebuilding my 06 crf450x with some afterarket goodies, and i think im going to have to run a race gas. 12.5:1 wiseco piston, port/polish head, kibblewhite valves, 450r cam. does anyone have any god suggestions as to what race gas i should use if i have to. im only being told that i have to run race gas because of the comp. upgrade. anything would be great. thanks

[dstollys]

WHAT IS THE BEST OXYGENATED RACE GAS YOU CAN GET FOR THE BEST $$$??? wondering because im going to have to run it i think with my hopups......any suggestions are greatly appreciated. thanks

[RCPH]

IMO, VP fuels are the best. In my street car if I want to turn up the boost VP C16 is the best all around choice.

If memory serves
VP C12 = 108 octane
VP C16 = 116 octane
VP Import = 120 + octane

If you have to have a Oxygenated fuel, go with Q16 which is the same as C16 (roughly)

For a car, race gas is alot of money, but for a bike, it should be much more affordable.

Good luck, there are alot of choices.
VP
Sunoco
Torco
But from my experiance, VP is the best

[DRGSin393]

I 2nd VP

[dstollys]

SWEET!!!! thatnks guys for the input. as soon as i get the beast runnin, ill try to get some action posted.....

[dogger315]

WHAT IS THE BEST OXYGENATED RACE GAS YOU CAN GET FOR THE BEST $$$???

VP Ultimate 4.2. Oxygenated, 102 Octane and worth at least three hp over
pump gas.

The only downside is it is not legal for AMA pro racing due to the
oxygenation and it is not available in states that control MTBE (like CA).
VP offers U4.2e for the MTBE challenged folks.

dogger

[dstollys]

can i order the stuff online and have it delivered to ca? and im not worried about legal for ama or n e thing. sounds like good stuff for the hp gain

[RCPH]

Originally Posted by dogger315

VP Ultimate 4.2. Oxygenated, 102 Octane and worth at least three hp over
pump gas.

The only downside is it is not legal for AMA pro racing due to the
oxygenation and it is not available in states that control MTBE (like CA).
VP offers U4.2e for the MTBE challenged folks.

dogger

Good advice. 102 octane is probably great plenty for most applications, and will burn slow enough to avoid detonation.
Coming back from the car world, im used to C16 ect, which is would be overkill for bikes.

As far as shipping to Cali, Im not sure on that one.
Good luck

[dogger315]

Check out there website: [Only registered and activated users can see links. ]
Click on the "worldwide distribution" icon. That will lead you to your
local distributor (VP Pacific) and a list of local dealers, any of whom
can answer your questions.

I know CA is super strict on this kind of stuff. When I lived there, I
couldn't even trade my old 49 state VP cans for CA cans because
the caps and spouts weren't approved.

dogger

[dstollys]

ive located a dealer, need to check if they will send it out to me, or if i can simply go pick it up. do you know if i will have to rejet due to the fuel change?

[dogger315]

do you know if i will have to rejet due to the fuel change?

Try running your stock jetting first, do some plug chops and see where you
are.

dogger

[zach v]

Originally Posted by dogger315

Try running your stock jetting first, do some plug chops and see where you
are.

dogger

If you run oxygenated fuel, you will undoubtedly have to jet up accross the board... That is unless you were running it pig rich. As far as oxygenated fuel best bang for the buck??? VP MS103. U4.2 is great but pricey. Oh and you do not have to run Oxygenated fuel because of your mods... Higher octane perhaps. The YZ250f run 13:1 and run on pump gas.

[dstollys]

yea......ive got my jetting down with my mods, and the fuel being mixed at 50:50, the thing screams bloody murder, no way will the front stay on the ground. im happy with what i have done.