Bob Craycraft said that I am right on the edge of being able to use 91. He said I should go higher. I will play with mix ratios.

That's a good point on the auto decompression system. Thank's for the reminder.

 

Below is a link to some good information on octane:

Octane Stuff

 

My brother runs 110 race fuel in his high compression raptor. I also use it in my yfz

 

what should I use?

The guy who built mine said a mix of 93 and c12

Look at my sig

 

play with it, run the 91 after that if their is detonation(pinging) start bumping up your octane and mixing it with 110. too much octane and you bike will run hot, i know personally on my 11:1 my bike run better on 87-91 octance than it does when i run 110.

 

I know its a completely different type of head design and cooling system...but I run straight turbo blue 112...with one range colder plug ...and my piston is 11:1 JE but with lots of head mods ..13:1 final ...but I definitely wouldnt run pump gas...

 

Hey the vp red is almost as much as pump gas cant go wrong[img]i/expressions/face-icon-small-happy.gif[/img] please don'y hurt me =(

 

Why doesnt anyone run 100 unleaded

 

hey . guys with the raptors/ with the 12.1 did you guys change your jetting? if i do the 12:1 je and a hot cam do i up my main or pilot jets any right now i am 25 pilot and 160 and 165 main.

 

I have 12:1 102mm, Hot cam 2, heavily ported, open airbox, I am running 27.5 pilots, 185/190 mains.