Race Fuels ?

[case-racing]

Has anyone played with race fuels, eg Methanol in there bike. i want to try it in my wild 300 Quad to see a bit more power but i don't know what to change on it and any help would be appreciated.

Cheers Bill

 

[arminhammer]

Has anyone played with race fuels, eg Methanol in there bike. i want to try it in my wild 300 Quad to see a bit more power but i don't know what to change on it and any help would be appreciated.

Cheers Bill

What makes you think you can get more power from race fuel?

 

[modifier]

The engine has to be built for higher octane to get results from higher octane. Otherwise is will actually run worse. Then once you get the head milled for high octane you are stuck running super expensive fuel.

On the MX track it might be nice but in the woods it's probably not worth it. Having your squish optimized will help you more.

Oxygenated fuel might run better.

I'm building up a 300 from a 250SXKTM and am going to have 2 heads machined. One for woods and pump gas and 1 high compression head for race gas the MX track and high altitude. I wish it was easier to change out heads. Still not too bad, just have to deal with coolant.

 

[pscook]

I know that methanol provides significant power but you need to have HUGE mains and super skinny needles. I read about the "methanol monster" road race bikes where they couldn't keep the front wheels on the ground. Hair-width needles on drilled out mains, roughly twice fuel consumption per mile. But, about a 50% gain in power. Great for dunes and other drags/wide open stuff (no trails/trees). Look for drag race resources, especially Banshee derived info. They run up to a 600CC displacement (300 per side) or some crazy number like that. Probably lots of info on methanol when you add "banshee" to the search terms.

 

[iajim]

Please keep in mind that Methanol is a completely different animal from Ethanol(pump gas in the states). Yes, you can get more power but as others have stated you'll need to have much higher compression, oil that is compatable with methanol and a carb/ fuel system that can tolerate corrosion from the fuel. Methanol is much, much more corrosive than Ethanol. A head mod(RB ?) and proper jetting(JD?) would be very cost effective and wouldn't have any negative effects on reliability. Jim