race fuel

[atcpunk107]

This may sound stupid but I hear of a lot of people running race fuel in there trikes and quads around here. Now some are stock and some are modded. Is there any real benefit from it. I have a stock 200x I was thinking of trying it if it actually has a performance gain if not then I won't. I've also know some people who run alcohol and race fuel.

[shortline10]

If you wanted to run 100 octane race fuel you might feel a little difference but at stock compression 93 is just fine . The difference is 10.00 a gal for race fuel and 3.50 For pump gas :lol:

[atcpunk107]

Here vp 110 is 8 and our 87 is 3.67

[SWIGIN]

To get the most HP out of any motor you should run the LEAST amount of octane that your motor will accept.

If you run high octane fuel in a low compression motor (stock 200x) it will hurt you performance wise.

Your stock 200x should run fine on 87. My 13.5-1 big bore YZR444 runs fine on 93, if it would ever ping then I will start mixing in some race fule with my 93.

[DasUberKraut]

Most people I know just run non-ethanol gas at 93 octane.

This is for all small engines. ATV's, outboard motors, lawn mowers, chainsaws, weed whackers... Etc.

Small engines, especially older ones were not designed to have ethanol in them. Often producing poor performance.

[RIDE-RED 250r]

To get the most HP out of any motor you should run the LEAST amount of octane that your motor will accept.

If you run high octane fuel in a low compression motor (stock 200x) it will hurt you performance wise.

Your stock 200x should run fine on 87. My 13.5-1 big bore YZR444 runs fine on 93, if it would ever ping then I will start mixing in some race fule with my 93.

I wholeheartedly agree!!! If more HP was as easy as just dumping higher octane fuel in the tank then what would be the point of engine mods??

I can't tell you how many people I have encountered over the years that tell me "yeah, I put some 110 oct in my ----- (fill in the blank) and I could really feel the difference".... And I'm like, "no...you didn't". Then I have to explain the whole science of compression and ignition timing as it relates to the minimum octane fuel needed. :rolleyes:

[El Camexican]

To get the most HP out of any motor you should run the LEAST amount of octane that your motor will accept.

If you run high octane fuel in a low compression motor (stock 200x) it will hurt you performance wise.

Your stock 200x should run fine on 87. My 13.5-1 big bore YZR444 runs fine on 93, if it would ever ping then I will start mixing in some race fule with my 93.

You just saved me 10 minutes of typing!

FYI Everyone: If you need more octane you can just add Toluene to whatever you have. I know a guy that runs 25% (I’ve heard of 30%) but it seems 20% is very safe, but as SWINGIN says, it will NOT add power. Only an oxygen carrying fuel like Nitro, or NOS can add power.

[atcpunk107]

Unfurtunately we can't get non ethanol gas. Anyone ever try the additives that counteracts the ethanol.

[Jon Boy]

ran 115oct in one of my trucks once (1/4tank of 115oct mixed with 3/4 tank of 93oct) the only thing i noticed was after 5mins of WOT the temp was in the red and took 15-20 mins to cool down back to normal. there was no other differance that i could tell. only did it because it was given to me and i got curious one night. :lol:

[yaegerb]

Here you go...all you ever wanted to know about octanes and when to use them.

http://www.powroll.com/tech_specs_octane.htm

[El Camexican]

Unfurtunately we can't get non ethanol gas. Anyone ever try the additives that counteracts the ethanol.

Another benifit to living in Mexico. We use all the corn for tortillas (yummy!), so our gas remains pure and free of that crud.

[El Camexican]

ran 115oct in one of my trucks once (1/4tank of 115oct mixed with 3/4 tank of 93oct) the only thing i noticed was after 5mins of WOT the temp was in the red and took 15-20 mins to cool down back to normal. there was no other differance that i could tell. only did it because it was given to me and i got curious one night. :lol:

:lol:Yea that mixing and matching of fuels is often best left to the NASA guys.

[RIDE-RED 250r]

Unfurtunately we can't get non ethanol gas. Anyone ever try the additives that counteracts the ethanol.

I have had good luck with Stabil Marine or Startron with my non-race fuel burning toys. I tend to mix it a little hotter than the directions say just for good measure.

[kokmatt]

Ethonal is a good clean fuel. Just are old bikes werent designed for that kinda fuel. id like to build a e-85 bike.

[RIDE-RED 250r]

Ethonal is a good clean fuel. Just are old bikes werent designed for that kinda fuel. id like to build a e-85 bike.

Yes, ethanol alone is. But when mixed with gasoline it falls out of suspension rather quickly if not used up and attracts moisture. That issue is the double death with a premix running 2-stroker..

[Deathrocket]

lets leave icky e10 out.. e anything for that matter, back to regular race fuel (or avgas) one thing you can do if your running race fuel, is advance the timing... which will give you more power.. more octane means a slower burn, which if ya don't need it will do just what they said, hurt performance...

[atc300r]

Iv ran 115 octain race gas is stock machines before.It was given to me.It smells awsome when it burns.On my 230 quadsport it ran great didnt notice any performance gains .The 250rs ran good on it. Didnt notice any difference .I know if you mix Cam-2 and Klotz your exhaust smells sweet.

[fabiodriven]

As a general rule of thumb, if your engine is not detonating then there is no need (or benefit) of a higher octane. If your engine is all dialed in with the correct timing etc. and has detonation, you more than likely need more octane. Otherwise you're just wasting your money on a higher octane fuel.

My mom always says she runs a tank of "the good stuff" (93 octane) every once in a while to "clean her car out". It doesn't matter how many times I explain it to her, she still thinks that it actually does something. :rolleyes:

[Mosh]

For most 4 stroke applications race fuel is not required.
However, hi performance 2 strokes love it..Not that AV gas either..They dont like that stuff.
110 Leaded race fuel is a benefit these days since the quality of premium pump gas has gone way down. 2 strokes love at least 93 octane, but the crap you get at the pump is hardly that rating at a constant level.
Plus 110 leaded fuel actually helps lube the top end and crank bearings. You do feel a difference in a mildly built Hi performance 2 stroke.

Also another thing to keep in mind is leaded hi octane fuel does not burn well at low temps.

I run at least a 50 50 mix of premium pump and 110 in all my 2 strokes except the banshee since they are low compression engines.

Dont get me wrong most 2 strokes run okay on 93 pump gas, but if it is available and you can afford it 110 is worth it IMO.

[El Camexican]

When I was reading up on using Toluene I ran into an octane test that said Shell Premium 93 they tested showed an R+M rating of 96. I usually stay away from Shell as it seems to cost more, but from now on that’s what the bikes will get when I’m up there, even if it was an anomaly.

[Jon Boy]

Iv ran 115 octain race gas is stock machines before.It was given to me.It smells awsome when it burns.On my 230 quadsport it ran great didnt notice any performance gains .The 250rs ran good on it. Didnt notice any difference .I know if you mix Cam-2 and Klotz your exhaust smells sweet.

around here you have to put a fragrance additive in your race fuel so the track workers know if your running race fuel. ends up smelling like grapes usually. :lol:

[atc300r]

When I first started drag racing I ran ultra 94 and klotz supertechniplate and everyone thought I was running alchohol.Last year I ran Cam-2 and Amsoil Dominator and noone thought anything about it.LOL.My mom also thinks if she runs a tank out the "good stuff" it cleans out her fuel system.LOL.