race fuel

im using new or jets that have sharp markings. race fuel does make things richer, at least from what ive read.

Oxygenated race gas would need more of it as some of the oxygen is in the fuel as opposed to the air. If you really want maximum power and oxygenated fuel is not illegal in whatever endeavor you do at least consider it. Just like Alcohol, methanol race fuel more is needed. The dirt bike magazines run dyno tests (stock vs modified) on race vs pump gas, or at least they have. It all depends on what one wants to do. Internet forums seem to be more on the set up than average recreational or utilitarian users.

Not to change the subject but in a pinch try a gallon of toluene to 4 gallons of 93.

I usually use VP C-12 bike is jetted for it and it's nice and crisp. Putting pump gas in it makes it feel like it has a flat tire.

Pump gas mixed with AV gas. How long will the mixture stay good with pre-mix oil?

in the past my friend and i ran a form of vp that was oxy and indeed we had to add a bit of fuel. had good results with it.

I've been told 90 days is about all you can expect out of pump gas unless you use additives and then 6 months before it starts to go bad. I've never seen any data on a pump gas race fuel mix.

In Calif. non-ethanol gas is not readily accessible. I suppose my only option is to run AV gas with pump/ethanol gas? Or would it be better to run straight AV gas?

Tetraethyl lead was added to gasoline back in the day to increase octane to help eliminate pre-ignition/pre-detonation and/or ping as engine compression ratios increased for performance. They also discovered that it helped lubricate the valve train in four strokes. in the early seventies they (government) began to stop using lead in gasoline because it increased emissions and was found to be dangerous for humans. By the late seventies it was all but gone from pump gas. You could however buy it for off-road/racing purposes only. Most all of my bikes (H2 kawasaki, CR 390's, KZ 1000 and IT 125) required around 98 octane to run well especially in the heat of Arizona. Higher octane also helps with heat issues in internal combustion engines (pre-ignition). The myth is that some people believe higher octane will boost horsepower...wrong! If an engine is running at peak performance and does not ping, pre-detonate/pre-ignition, it probably doesn't require higher octane. However, if one boosts engine compression ratios, ports, performance pipe etc, it very well may need a little increase in octane. It is also possible to "over" octane an engine and it will not run at its best. Too cool for school! Here in Phoenix I have access to all sorts of racing fuel. VP and Sunoco are two biggies. If and when I buy from them I use VP MS 98 L ( 98 octane leaded). The nice thing about buying that stuff is the shelf life is triple due to no ethanol in the fuel. Today's pump gas has a short shelf life due to all of the junk additives most of which is ethanol. Another option (and cheaper) is to buy octane booster) But not just any octane booster. It needs to be Tetraethyl lead. That is the only stuff ( that i believe) does a good job at increasing octane levels. Hard to find stuff! However, Kemco Industries is again making Octane Supreme. Whether I use VP 98 or Octane Supreme all of the bikes run excellent. I stopped using Oxygenated fuels several years ago as I got tired of cleaning carbs. I also run the bikes until carbs are empty of fuel. Gas will keep better in the tank than carbs.

PS use caution using aviation fuel. They use additives to deal with extreme elevation. Some two-stroke oils will not mix well using aviation fuel.

LOL. Ya, my father lives in Fallbrook Ca. He calls it the socialist state of California. I lived there many years myself. Now, if only someone could do something about the hot summers!

Yes, we go there in the summers to escape the heat. When I was growing up in S Cal one of my favorite riding spots was Gorman (Hungry Valley). Have you ever ridden there? Also rode Indian Dunes and Saddleback but really enjoyed Gorman.

Gorman is hard to beat. I remember when it was wide open. No forest service closures etc. You could ride up to the mountain and come down the other side. There was an intense dry wash coming down and then you would follow the edge of the river. Would get so close to it at times one would use their other hand to keep from hitting the handlebar. I still try to get there every so often. Looks like a nice late seventies early eighties IT your son is riding?

i found a q7 needle jet so ill try taking the bike out tomorrow and see how it does..really makes you appreciate how easy the lectron is to dial in!

Here is the response from Amsoil a question I askedon their website.

question;
My question is which mix oil is best to use with
100AV low lead fuel also known as AV gas which is sold at local airports?
Is any of your mix oils not compatible with certain kind of fuel?

Hi Doug

All the AMSOIL 2-cycle oils are compatible with all gasoline based fuels
including avgas and up to 15% ethanol pump gasolines. However AMSOIL is not
compatible with the exotic fuels such as nitro methane and such that are not
gasoline based. I would not recommend using E85 in any 2-cycle engine.

For the highest performance oil for racing use the Dominator. For stock /
non-racing the Interceptor would be the better choice (with power-valve
engines the interceptor will do a better job of keeping them clean.

one of the reasons i always used super techniplate is that is mixes with everything. never had a concern with it mixing with alcohol (ethanol)...
https://www.klotzlube.com/Ecommerce/site/content/PDFs/TECH/KL-100-Tech-Sheet.pdf
blends with e85, alcohol, nitromethane, etc...

im also a big fan of amsoil products but ive run klotz too long with good results
i used to hang out with some micro sprint guys...all the micros used 250cc 2 stroke engines burning alcohol. well over half the field all ran klotz benol. benol is really dirty but great protection and mixes with anything. very few oil manufacturers will come out and say their oil works with alcohol or anything other than pure gasoline...
one thing is for sure ill be breathing castor tomorrow, lol. braap!