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ORSCA_Admin User is Offline

Posts:133

08/12/2008 12:16 AM	Alert
Has anyone ever mixed Toluene to high octane pump gas to make their own high octane fuel. Formula one racers used to do it a long time ago . I was just wondering if any one has ever tried it. Here is the mixture ratings on Toluene and the cost is very cheap and it can be bought at any hardware store or paint supply store Toulene R+M/2...114 Cost...$2.50/gal Mixtures with 89 Octane regular fuel 10%...94.2 Octane 20%...96.4 Octane 30%...98.6 Octane 40%...102.2 octane 50%.. 106.8 octane these mesurement are on one gallon of 89 octane fuel 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. It takes smaller quantities of toluene to achieve the same octane boost compared to 100 octane racing gas. I have not seen unleaded racing gas for sale that exceeds the octane rating of toluene. Since toluene is not officially sold as a fuel, gas taxes do not apply. Also racing gasoline tend to have higher markups being of interest to the performance minded enthusiast and thus is very likely to be more expensive to buy and use long term than toluene, which is typically used in more mundane applications like paint thinner. Physical/Chemical Characteristics =========================================================================== Appearance And Odor: CLEAR COLORLESS LIQUID, AROMATIC (HYDROCARBON) ODOR Boiling Point: 230F,110C Melting Point: <-76F,<-60C Vapor Pressure (MM Hg/70 F): 47 MM Vapor Density (Air=1): 3.20 Specific Gravity: 0.87 Decomposition Temperature: UNKNOWN Evaporation Rate And Ref: 2.4 (N-BUTYL ACETATE = 1) Solubility In Water: 0.05% Percent Volatiles By Volume: 100 Corrosion Rate (IPY): UNKNOWN I know their is a limit to the mixture but in formula one race cars this mixture proves well in high rpm and long running engines. ok fuel geeks inform us on this

ken69rs

Posts:268

08/12/2008 8:08 AM	Alert
We have been running this for years, When i was in Germany with my Grand National that was the only way we could get by with pump gas and alot of boost. I only ran 10% but you are correct about the increase in octane. Another good note to add is it will not harm Oxygen sensors and it is the best injector cleaner you can buy for your everyday street car. Toluene is used in the Octane boosters you buy in the parts store but, will not turn plugs thet funny color. All our street cars have it in it. I buy it in 5 Gallon drums from Sherwin Williams for about $27.00 to $30.00. It's best if you know a painter that buys from them on a regular basis to get the best price. Wade, this is some good info you have come up with. I guess I have just taken this stuff for granted over the years. You have too much time on your hands these days days. LOL See ya at South Ga.

ORSCA News User is Offline

Posts:1177

08/12/2008 12:31 PM	Alert
Ken I can't take credit for this one. Johnny is ORSCA Admin

http://www.wademooney.com http://www.myspace.com/wademooney I am available for race announcing, round by round coverage, race recaps. Reasonable rates. Call Wade Mooney 1-334-614-0636 email: wademooney@ymail.com

kwj68

Posts:2

08/12/2008 3:17 PM	Alert
so your saying by mixing it 50/50 = 107 octane,can you mix it 75/25....i thought most turbo and nos cars needed at least 116+ octane what about a high compression motor...i try to run aleast 114 octane or better...does it require larger jetting,what about timing....

ORSCA

Posts:1348

08/12/2008 4:14 PM	Alert
I put that up in hope that some guys knew a little bit more than I did on tuning and limitations. I knew that it has been done in some hot street car stuff and is a old trick in formula one racing. What got me looking was checking on race fuel pricing for my car almost made me have a stroke at how much it has sky rocket in just the last year. Sure would like some info on it from all the fuel experts that were on here just a few months when we were talking about doing away with certain fuel they were using.

If your afraid to fly then I guess you never will

1arunem

Posts:21

08/12/2008 10:03 PM	Alert
Definently an old trick for the Grand National turbo guys..

SPOOLIN

Posts:10

08/12/2008 10:37 PM	Alert
I havn't seen race fuel skyrocket to much in the past few years. Ive been consistently paying $10 for 116 octane and about 8.50 for 112 octane. I really cannot stand it when i see shops selling VP c16 (117 octane) for $12.50 and $13.00. The are taking advantage of people marking it up that much. the Toluene stuff is really good, ive read of people adding a dash of ATF to add lubricity to it because gasoline has a lubricity to it for fuel pumps and injectors and such.

Out to get ya.

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Forums > Outlaw Racing Street Car Association > General Discussion > Running a form of rocket fuel in your car

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