Elevation has a lot to do w/ the kind of octane you should run. Pinhead you are losing about 1.5 lbs in compression due to our elevation, 4500ft . My Cannondale has a 12.5-1 piston. The original FX400's had 12.5-1 pistons. The other newer Dales say 12.5-1, but they are really 11.8-1.. I run 91 0ctane w/ no problems..

 

Yeah i wasnt haveing problems either.. i just decided to start running higher octane because it ran alot cooler.. and that makes me happy.

 

i think we have 91 or 93 here... like 208 was 200 but went up [img]i/expressions/face-icon-small-sad.gif[/img] again.... im runnin 87 in my warrior wuold it help ne if i put 89 in it?

 

No it won't make it run better. I got good advise from many sources when I used to run my GSXR1100 and ZX11 at the strip. I was told to run the lowest pump octane for more power. I was told higher octane does not create more hp, but actually produces less power. High octane is to prevent detonation not create more power when not required by high compression motors. Lower octane burns faster.

 

We have 92/93 octane here, about $2.12 a gallon....we also have 110 octane turbo blue race fuel....about $4 a gallon if I remember right.

 

Up to 93 at most gas stations here. Sunoco runs up to 94. And 3 gas stations near me sell cam 2(100 octane). Gotta go to a speed shop or the track for anything higher.

 

Any Exxon around here has 93 pump gas for around $2.05 a gallon.

Go-Mart/Shell sell's 91 and it's around $2.00 a gallon.

I run straight cam 2(110) and it's $4.29 a gallon. Alky at the same gas station is $1.85 a gallon. The same price as the cheapest gas you can find.

 

regular-87, Reg+ 89, Premium- 92

 

we have 87- $2.03 89- $2.11 and 93 which i use at $2.25