Race Fuels

[SurfCrazed]

What do yall run in yalls skis?!?! The only race grade fuel i can find around here with out having the ordered a barrel is Cam2. I dont want to go ghetto and run 91 Octane+Octane Booster..

[Matt_E]

I dont want to go ghetto and run 91 Octane+Octane Booster..

No, you don't.
Bad idea if the ski needs race gas.

[SurfCrazed]

thats what i thought! oh Matt you got a pm from me :smile:

[njfl]

What do yall run in yalls skis?!?! The only race grade fuel i can find around here with out having the ordered a barrel is Cam2. I dont want to go ghetto and run 91 Octane+Octane Booster..

You could try going to your local small airport adn running 100 octane low lead (100LL).

[SurfCrazed]

about how much does that stuff cost a gallon? im guessing you can mix oil with it right?

[Matt_E]

Yes, you can mix it. Supposedly, it doesn't stay mixed over time very well - so just shake it or use it up.
Costs anywhere between $3.80 - $5.00 per gallon

[SurfCrazed]

ok have you ever used Cam2 in your ski? because i can go right down the street and get that for about 3 bucks

[Matt_E]

Not me.

[skinnyman]

track tech 111 ,Its the old phillips 66 race fuel 6.00 gal check the small mx shops.
Make sure they have barrels on site bring own jugs
I cut a deal with a guy close to buy at least 55 gals in 6 months

[SurfCrazed]

wow should have thought of the local mx shop! :banghead:

[keefer]

What compression are you running ?

[njfl]

If you can get Cam2 for $3.00 a gallon, that would be a good choice. Just check the "Motor Octane" number of that variety of Cam2 that they have. If it's in the ballpark of 97-100, you'll likely be fine for running anything up to 215psi or so (I don't know all of the details of your setup, so there is a little handwaving going on here).

Did you build the motor yourself, or did someone else. You should try to find out the specific octane requirement for your motor. There is no fixed octane rating solely based on compression. The things that are factored into it are also the dome/piston shape, porting, and timing. For example, I know of some builders who can make a 200psi motor that can run on pump gas.

[SurfCrazed]

well the motor isnt completed yet.. i was planning on running 33 or 35cc domes which ADAracing says will make about 185-200psi and was mainly just trying to find out kinds were out there and what was the cheapest!! i plan on doing some cyl and case porting along with running an aftermarket pipe.. so right now i have no idea what this motor will put out psi wise. yes im building the motor by myself minus some porting

[keefer]

Like njfl said many factors can determine what octane fuel you should use. Cranking compression is a baseline but you really should talk to a reputable engine builder with your setup to get a recommendation on fuels. I am running a 84mm case ported 62t case with 61x ported cyl and 35cc domes. I makes about 205 cranking but the squish is about .055. I run a 110 octane leaded fuel at $5 gal from a local pump. I have had no problems with it.
http://www.renegadepro1.com/index.html

[duvers]

I can buy Sunoco 110 leaded at a local pump, so that's what I use for practice.

Prior to racing, I switch to the Sunoco 104 unleaded (called GT Plus) for racing since leaded fuel is illegal (gotta richen up the carbs just a little bit when I make the switch).

[jeepmark4x4]

Yeah, I can get the sunoco 110 leaded for 5.79 a gallon down the street. Go redneck georgia

[eastbay]

how does the ave gas perform(205psisxr) ive ran it in my superjet but am kinda scared to run in the sxr.some say its fine some sy its bad.the air port is close to the house an its not 6$ a gallon.i like the 110 erc that i run.my ski runs great on ERC 110 mixed half with pump 91.but it gets a lil pricey running that for practice

[demolition_x]

you could probably mix half 93 and av gas to run 33cc. i know some people run just 93 octane with the 33cc domes.

you won't know till the motor is built up.

[SurfCrazed]

its finished now.. all stock besides Ported cases, 2mm overbore, riva red pipe

[the only couch rider]

how much do you plan on buying and or using...... i have bulk buy with VP coming up.... looking at atleast 5 55gallon drums

probably going with 2 drums of HTG and 3 Drums of C12 as of right now

[SurfCrazed]

well with the current setup all I'm going to run for now is 93 thats all it needs then when i make the jump to higher compression ill jump up the octane... i changed my mind half way threw it cause of $$$ and i didn't want to have to worry about having enough gas on the way down to the lake or ocean when i can hit any station along the way... :biggthumpup:

[#ZERO]

When you buy racing fuel you have to remember that it will lose one octane point per month when just sitting inside a drum or container.

It's a good idea to look at the date on the tank when purchasing racing fuel.

If you have a 55 gallon drum of 105 octane fuel thats been sitting in someone's shop for months in you may be running fuel that's the same octane as premium gas or less.