how to obtain 100 octane

[chubbz2006]

does anybody know how to obtain 100 octane by mixing with 92 pump gas . thank you

Put some turbo blue in with the gas

[pigpin]

ive always heard you can never obtian true octane ratings by mixing stuff with you gas, its mainly to help with cars that sparkknock and need a little extra to help it out. i would just suggest finding somewhere that sales it, by the time you buy enough boost to add to it, u could just buy it probly

Or if your rich you could buy straight turbo blue which is like 108 octane. like i said though, you would have to be rich cause its $8 dolllars a gallon

[pigpin]

here localy, theres a gas station a few miles down the road from charlotte motor speedway that sales 100 octane for 7 bucks a gallon.... i regret this 13:1 compression now.....

[Xylene]

Small airports also sell it, but its about the same price as everyone else is posting. My little brother goes to one in South Jersey to get 108 and 100.

[Kickstarts-suck]

Sunoco sells it cheap

[rooster300ex]

Just find some 110 octane somwhere around where you live. Should of went with 12:1. People can get away with 12:1 on 93 W/ alil 110 mixed in with it, instead of straight 110, and the power difference prolly isnt that much.

[450R-156]

For 13.1 Compression the guy working on my motor said to run 60/40 mix, you can also get 100 octane at most air ports and it is better quality than race gas and cheaper

[GPracer2500]

If buying race fuel is impractical or otherwise not something you can/want to do, then Kemco Octane Supreme 130 (http://www.kemcooil.com/products.php?cId=4) is one of the very few commercial products that does what it says it does. It's the only lead additive (real TEL additive, not a "substitute lead" additive) that I'm aware of available in this country.

It won't provide many of the benefits racing fuel provides (performance oriented distillation curves, consistent SG specs for jetting consistency, etc) but it will increase the octane rating of the pump fuel.

[Glamis400ex]

When I used to mix my gas for my 426ex I used a 50/50 ratio of 91 pump and 110 race gas.

Here's how you do it.
91 x 3 gallons = 273
110 x 3 gallons=330

That's a 50:50 ratio. 3 gallons of each

ADD 273 + 330 = 603

Divide by total number of gallons which is 6

603 divided by 6 = 100.5 octane

I just poured 2.5 gallons of one and then 2.5 gallons of the other in mygas jug and shake like crazy.

[GPracer2500]

Originally posted by Glamis400ex
When I used to mix my gas for my 426ex I used a 50/50 ratio of 91 pump and 110 race gas.

Here's how you do it.
91 x 3 gallons = 273
110 x 3 gallons=330

That's a 50:50 ratio. 3 gallons of each

ADD 273 + 330 = 603

Divide by total number of gallons which is 6

603 divided by 6 = 100.5 octane

I just poured 2.5 gallons of one and then 2.5 gallons of the other in mygas jug and shake like crazy.

It doesn't work like that. When mixing unleaded and leaded fuels together, averaging the octane ratings of the two fuels doesn't work. I'm not saying you can't mix them (you can). I'm saying you'll never really know the final octane rating of the mix (other than it will be somewhere between the two fuels you started with).

When mixing leaded with leaded or unleaded and unleaded than a simple average can be pretty close.

[alf44]

I use Blendzall octane boost. 5-6 bucks a pint. One pint to 4 gallons of premium gas.

[sleepinR]

i use av gas in both my bikes and it works great...of course i mix it about 3-1 with 93 but i live next to an airport where it is only 3.50/gallon....pretty nice...not sure howe much it is other places

[sleepinR]

i use av gas in both my bikes and it works great...of course i mix it about 3-1 with 93 but i live next to an airport where it is only 3.50/gallon....pretty nice...not sure howe much it is other places

[sleepinR]

i use av gas in both my bikes and it works great...of course i mix it about 3-1 with 93 but i live next to an airport where it is only 3.50/gallon....pretty nice...not sure howe much it is other places

[Glamis400ex]

Originally posted by GPracer2500
It doesn't work like that. When mixing unleaded and leaded fuels together, averaging the octane ratings of the two fuels doesn't work. I'm not saying you can't mix them (you can). I'm saying you'll never really know the final octane rating of the mix (other than it will be somewhere between the two fuels you started with).

When mixing leaded with leaded or unleaded and unleaded than a simple average can be pretty close.

GP,
your a smart dude, but I'm not buying that one. Tell me why that ratio doesn't work. I had zero problems with my hi comp 426ex.

Glamis

[GPracer2500]

Originally posted by Glamis400ex
GP,
your a smart dude, but I'm not buying that one. Tell me why that ratio doesn't work. I had zero problems with my hi comp 426ex.

Glamis

The fact that you had zero problems with your mix in no way invalidates my comments. ;) Like I said, you can mix fuels--but you can't calculate the final octane rating of that mix by averaging the two fuels' ratings. In some cases the final octane rating will be ABOVE the figure calculated by simple averaging. In other cases it might be lower than the average. It just depends on the specific composition of the two fuels.

When you mix fuels together they react and their individual octane ratings change. The reason for this centers around a property of gasoline called "lead response". If you were to graph the response of gasoline to the addition of lead it won't be a straight line. It will be a curve. If you keep adding more and more lead to gasoline you'll reach a point of diminishing returns relatively quickly.

Lead g/l....RON
0.0..........96
0.1..........98
0.2..........99
0.3..........100
0.4..........101
0.5..........101.5
0.6..........102
0.7..........102.5
0.8..........102.75

[The above is published lead response data of catalytic reformate: Automotive Fuels Reference Book - 2nd edition, K.Owen and T.Coley, SAE. ISBN 1-56091-589-7 (1995).]

So, the lead response of the pump gas in a leaded/unleaded mix skews any attempt at a simple average of the two starting octane ratings. The lead in the leaded fuel will raise the octane rating of the unleaded fuel. But the lead is now diluted--from the perspective of the leaded fuel--so its octane rating may also change.

Complicating things further is that the lead response of pump gasoline is not consistent. Differences in summer and winter blends as well as regional differences in fuels can change how the pump fuel component of a mix will react to the lead in the leaded component. If the unleaded component is oxygenated (as it is in many areas of the country) then you've got yet another lead response variable. Some oxygenates have a negative lead response (meaning the lead in the leaded fuel can actually lower the octane rating of the unleaded component.)

I've mixed 91 pump with VP 110 myself. It got me the additional octane the engine needed. But the actual increase in octane is not easily quantified. When I mix fuels I really don't care what the final octane rating works out to be. It's mostly irrelevent. Either the mix has a high enough octane rating for my engine or it doesn't--a pass/fail situation. I determine if it passes or fails by testing the fuel in my engine under conditions that favor deto. If none is detected the mix "passes" and I'm good to go with that mix.

Hope that helps.

[Glamis400ex]

:scary:

[old-XC-guy]

Would never mix myself.. Buck up and buy the race gas , dont short change your performance of your bike and take the chance of hurting it !! It will cost you more in the long run to fix your bike. I feel thats one of the things you shouldnt cut corners on.