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is there an octane boost that works

I

Insaneboltrounder/sjohns

Well-known member
Years ago my buddy had access to a knock motor at the refinery. They tested all the boosters and said none do squat. Is there any now that will help when you cant find premium?
 
I used to pay $9 a gallon but it is now outlawed in my area.

Toluene in small amounts and don't run pure Toluene

Toluene can be used as an octane booster in gasoline fuels used in internal combustion engines. Toluene at 86% by volume fueled all the turbo Formula 1 teams in the 1980s, first pioneered by the Honda team. The remaining 14% was a "filler" of n-heptane, to reduce the octane to meet Formula 1 fuel restrictions. Toluene at 100% can be used as a fuel for both two-stroke and four-stroke engines; however, due to the density of the fuel and other factors, the fuel does not vaporize easily unless preheated to 70 degrees Celsius (Honda accomplished this in their Formula 1 cars by routing the fuel lines through the muffler system to heat the fuel). Toluene also poses similar problems as alcohol fuels, as it eats through standard rubber fuel lines and has no lubricating properties, as standard gasoline does,which can break down fuel pumps and cause upper cylinder bore wear.
 
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I use ACES in my high compression outboard 2 stroke (175PSI cranking compression) with 91 premium for 2 seasons now and not one lick of trouble
 
Toluene is a pure hydrocarbon (C7H8). i.e. it contains only hydrogen and carbon atoms. It belongs to a particular category of hydrocarbons called aromatic hydrocarbons. Complete combustion of toluene yields CO2 and H2O. This fact ensures that the entire emission control system such as the catalyst and oxygen sensor of your car is unaffected. There are no metallic compounds (lead, magnesium etc), no nitro compounds and no oxygen atoms in toluene. It is made up of exactly the same ingredients as ordinary gasoline. In fact it is one of the main ingredients of gasoline.

Toluene has a RON octane rating of 121 and a MON rating of 107, leading to a (R+M)/2 rating of 114. (R+M)/2 is how ordinary fuels are rated in the US. Note that toluene has a sensitivity rating of 121-107=14. This compares favorably with alcohols, which have sensitivities in the 20-30 range. The more sensitive a fuel is the more its performance degrades under load. Toluene's low sensitivity means that it is an excellent fuel for a heavily loaded engine.

Toluene is denser than ordinary gasoline (0.87 g/mL vs. 0.72-0.74) and contains more energy per unit volume. Thus combustion of toluene leads to more energy being liberated and thus more power generated. This is in contrast to oxygenated octane boosters like ethanol or MTBE, which contain less energy per unit volume compared to gasoline. The higher heating value of toluene also means that the exhaust gases contain more kinetic energy, which in turn means that there is more energy to drive turbocharger vanes. In practical terms this is experienced as a faster onset of turbo boost.
 
Toluene has a (R+M)/2 rating of 114 octane

Modern vehicles now use computerized engine management systems that can react to engine knock and retard ignition timing if low octane fuel is being used. Consequently cars are now being manufactured with very high compression ratios that appear to give good fuel economy and at the same time good performance. This combination does assume that fuel of adequate octane is being used.

For a high compression engine to run on low octane fuel, the engine management system will need to retard the ignition timing to prevent pre-ignition or pinging. Retarding the ignition timing means that the firing of the spark plug is delayed until a later moment in the compression stroke. It does not take much to see that a later onset of combustion means that the combustion is less complete, which in turn mean less power and poorer fuel economy. It is possible that the casual driver will still come out ahead in terms of saving money by using low octane fuel, but the retarded ignition advance also means a rougher running engine and a much duller throttle response. Thus octane boosting is not necessarily of interest to all motorists but rather the enthusiasts. For turbocharged or supercharged engines, insufficient octane will also lead the engine management system to curtail the amount of boost which in turn defeats the purpose of these engines. Toluene is such an effective anti knock fuel that it takes a smaller quantity to achieve the same octane boost compared to 100 octane racing gas.
 
How much toluene should i use per tank of gasoline?

A 5 or 10% increase in the aromatic content of gas will most likely be well within the refining specifications of gasoline defined by ASTM D4814, which specifies an aromatic content of between 20% and 45%. What this means is that if the 92 octane gas that you started off with had an aromatic content of say 30% and you increased it by 10% to 40% you would still be left with a mix that meets the industry definition of gasoline.

Because toluene is such an effective anti knock fuel it also means that it is more difficult to ignite at low temperatures. The Formula 1 cars that ran on 84% toluene needed to have hot radiator air diverted to heat its fuel tank to 70C to assist its vaporization. Thus too strong a concentration of toluene will lead to poor cold start and running characteristics. It’s recommended that the concentration of toluene used not to exceed 30% or what the engine is capable of utilizing. i.e. Experiment with small increases in concentration until you can no longer detect an improvement.

Octane ratings can be easily calculated by simple averaging

Toluene has octane rating of 114. So use this formula to figure what octane you get when u mix toluene with gasoline:

gallons of gasoline x Octane (eg.95 or 98) + (gallons of toluene x 114)

divided by Total gallons of Gasoline & Toluene
 
I used to pay $9 a gallon but it is now outlawed in my area.

Toluene in small amounts and don't run pure Toluene

Toluene can be used as an octane booster in gasoline fuels used in internal combustion engines. Toluene at 86% by volume fueled all the turbo Formula 1 teams in the 1980s, first pioneered by the Honda team. The remaining 14% was a "filler" of n-heptane, to reduce the octane to meet Formula 1 fuel restrictions. Toluene at 100% can be used as a fuel for both two-stroke and four-stroke engines; however, due to the density of the fuel and other factors, the fuel does not vaporize easily unless preheated to 70 degrees Celsius (Honda accomplished this in their Formula 1 cars by routing the fuel lines through the muffler system to heat the fuel). Toluene also poses similar problems as alcohol fuels, as it eats through standard rubber fuel lines and has no lubricating properties, as standard gasoline does,which can break down fuel pumps and cause upper cylinder bore wear.

Wicked stuff that Toluene....... 1983 bmw figured thay made 1300hp out of a 1.5 litre engine, running 80% of that poison through it :crutch:
at 55psi boost
 
Did a lot of reading / research. Needed just a "bump" to get me from sea level up to only 1,500" - 2,000' to keep the det light / retarded timing scenario from happening.
Best thing I could find that I could get was Amsoil octane boost. Didn't make any difference whatsoever that I could tell. Went back to pump gas only. This was running 90 octane @ the pump. Funny thing, 3rd party tests and all said it gained just under 3 points???
 
Years ago my buddy had access to a knock motor at the refinery. They tested all the boosters and said none do squat. Is there any now that will help when you cant find premium?

i have used the NOS brand four 4 years now in my bigbore with premium..it raises 60 points..(6 octane)..and it is stated on bottle

The Lucas doesn;t say on their bottle but the testing show very good..but if they don;t state the octane raise on their bottle whats to stop them from changing the formula..??

click both links..one is lucas results...the other is NOS.


http://volvospeed.com/Review/misc_performance_volvo_reviews/lucas_octane_booster.html

http://volvospeed.com/Review/misc_performance_volvo_reviews/nos_octane_booster.html
 
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Did a lot of reading / research. Needed just a "bump" to get me from sea level up to only 1,500" - 2,000' to keep the det light / retarded timing scenario from happening.
Best thing I could find that I could get was Amsoil octane boost. Didn't make any difference whatsoever that I could tell. Went back to pump gas only. This was running 90 octane @ the pump. Funny thing, 3rd party tests and all said it gained just under 3 points???

yep..there is 10 points to one octane...alot of junk out there..3 points is laughable..
 
Best deal is just mix in some race gas...get some vp C16 and blend it. Or run 100ll av gas.
 
I had some problems with my Polaris 800 -11.
Knocking and high egt.
After 1% of Klotz booster, the problems were gone.
Some racefuel mix might be better? But I had some Klotz and it worked!
And another good thing with it, is that it smells racegas when you use it!!
 
Shain used to sell a form of octane supreme 130 or something similar. It contained true TEL lead and was one of the only that was proven in his sleds. "Boost juice", i haven't heard anything about it for some time.

Hatcher used to run it hopefully he can chime in.
 
Shain used to sell a form of octane supreme 130 or something similar. It contained true TEL lead and was one of the only that was proven in his sleds. "Boost juice", i haven't heard anything about it for some time.

Hatcher used to run it hopefully he can chime in.

Correct me if im wrong but lead is no bueno for o2 sensors
 
I run a gallon of TT111 with 91 none oxygenated fuel and it works great. for those of you that do not know what TT stands for it is Track Tech, excellant race fuel..
 
I guess all brands octanebooster is worth a try, if you just need a little extra octane it might just work. Motor setup must be correct. Gumout turned my plugs brown once and saved me for one season. I added 3/4 bottle to a tank 93 octane. i recommend! C16 did the job the season after. 12% C16 or something like that.
 
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