what gas to run?

[djhenson23]

I was wondering what kinda od vp race fuel I should run with the yoshi 450 kit. Anyone please let me know.

[JDiablo]

what is the compression ont he piston?

[djhenson23]

it is a 92 mm piston.

[JDiablo]

yea but what compression like 12.5:1?

[djhenson23]

im not positive yet. I will find out I am giving it to the guy who is gonna build it for me this weekend. But what fuel do you think for the 12.5:1 and which fuel for the 13.5:1 do you think.

[JDiablo]

well anything above 11:1 i would say you will want at least 102 i would say to be on the safe side octane,with the 13.5 maybe 112 and if you go any higher try to find the highest possible crap you can find,lol

[racer113]

if you go with the 12.5 or 13 Run the U4 fuel 12 dozers a gallon

[djhenson23]

i thought the U4 was illegal for the nationals?

[racer113]

u4 is leagal and if it isn't go talk to Cody Anderson he runs u4 and runs nationals

[Airik79mx]

U4 is only 92 mon octane. Run U2 it's 101 mon octane. As far as nationals 2.8% oxygenation is the legal limit (I think) so U4 and U2 isn't legal. But I thats if you get your fuel checked.

[djhenson23]

thats what i thought and the U4 and U2 is 6% oxygenated. ive had people tell me to run the c12 so i think i am going to try it.

[catch22blaster]

run 93 octane

[Airik79mx]

Originally posted by djhenson23
thats what i thought and the U4 and U2 is 6% oxygenated. ive had people tell me to run the c12 so i think i am going to try it.

C12 is good but won't make anymore power than pumps gas. Try MR8 if you have the cash but I'd say U2 would work just fine. I have 13.8:1 and I use U2.

[racer113]

run c12 in 2 stroke moters like the R or Blaster