[Miller]

I know there was a thread that had a link to a site that told all of the different ratios and octane rating for mixing some homebrew race gas. Does anybody still have the link? I have tried searching a ton and cant find anything.

[Sluggo]

http://www.vtr.org/maintain/gasoline-octane.html
This is more technical.http://www.merkurencyclopedia.com/index.html

[Turbopit]

Does anyone realize there is more to turboford.org than just the forum?

THe VTR link is in the FAQ section (not the FAQ forum) of this site.

Hmm, strange though, it's asking for user name and password? DId anyone else get that?

[Datch]

Yeah I got that also. Never used to come up that way.

[Dr_EluSivE]

i appears the host website now requires a username and password to gain access to their tech articles. :thumbdown:

Dr.

[Stinger]

Simple, buy some Torco race fuel concentrate for about 15 bux, pour it in a full tank and you have 15 gallons of 107. Pour 1/4 of it in 1/4 of a tank and you have ~4 gallons of ~107 octane.

[Miller]

that would be nice but I only need 97 octane.

[Stinger]

Well, mix less in your gas then...I was just giving you an example. You can make it whatever octane you want.

[firsthero]

hey stinger. the question is -where to buy it. i cannot find a dealer anywhere near the edge of the earth(great falls,mt). i even tried alberta, canada.
thanks
bob

you cant run with the big dogs if you pee like a puppy

[merk23literturbo]

Here is one site that I copied a while ago:
>>>>>>>
Homebrew Gasoline Octane Boosters
Editor's note: I would NOT suggest that a person use the following fuel mixtures without considering the detrimental effects on your engine, vital engine components (O2 sensor, etc), and other potential damage. That said, the information is interesting.
Original published in:
GS-Xtra
1213 Gornto Road
Valdosta, GA 31602
(912) 244-0577
Editor: Richard Lasetter, president Gran Sport Club of America (GSCA)

Formula #1 - Toluene
R+M/2.........114
Cost...........$2.50/gal
Mixtures with 92 Octane Premium
10%...........94.2 Octane
20%...........96.4 Octane
30%...........98.6 Octane
Notes: Common ingredient in Octane Boosters in a can. 12-16 ounces will only raise octane 2-3 *points*, i.e. from 92 to 92.3. Often costs $3-5 for 12-16 ounces, when it can be purchased for less than $3/gal at chemical supply houses or paint stores.

Formula #2 - Xylene
R+M/2.........117
Cost...........$2.75/gal
Mixtures with 92 Octane Premium
10%...........94.5 Octane
20%...........97.0 Octane
30%...........99.5 Octane
Notes: Similar to Toluene. 12-16 ounces will only raise octane 2-3 *points*, i.e. from 92 to 92.3. Usually mixed with Toluene and advertised as *race formula*.

Formula #3 - Methyl-tertiary-butyl-ether (MTBE)
R+M/2.........118
Cost...........$3.50/gal
Mixtures with 92 Octane Premium
10%...........94.6 Octane
20%...........97.2 Octane
30%...........99.8 Octane
Notes: Oxygenate. Very common in octane booster products. Has lower BTU content than toluene or xylene, but oxygenate effect makes the gasoline burn better and produce more energy.

Formula #4 - Methanol or Ethanol
R+M/2.........101
Cost...........$0.60 - $1.75/gal
Mixtures with 92 Octane Premium
10%...........94.3 Octane (Methanol)
10%...........94.7 Octane (Ethanol)
20%...........Not Recommended
Notes: Methanol is wood alcohol. Ethanol is grain alcohol and found in Gasohol in 10% ratios. Both alcohols are mildly corrosive and will eat gas tank linings, rubber and aluminum if used in excessive ratios. Main ingredient in "Gas Dryers", combine with water.

Formula #5 - Isopropyl Alcohol and Tertiary Butyl Alcohol
R+M/2.........101
Cost...........$0.60-$1.50/gal
Mixtures with 92 Octane Premium
10%...........94.5 Octane
20%...........Not Recommended
30%...........Not Recommended

Notes: Similar to Methanol/Ethanol. Isopropyl Alcohol is simply rubbing alcohol.

Sample Mixture
To make your own octane booster, it is easiest to make up a large batch, and then bottle it up in "dosage-size" uses.
Below is the basic formula of one of the popular octane booster products. To make eight 16 ounce bottles (128 oz = 1 gal):

100 oz of toluene for octane boost
25 oz of mineral spirits (cleaning agent)
3 oz of transmission fluid (lubricating agent)
This product is advertised as "octane booster with cleaning agent *and* lubricating agent!". Diesel fuel or kerosene can be substituted for mineral spirits and light turbine oil can be substituted for transmission fluid. Color can be added with petroleum dyes.
This page (http://www.vtr.org/maintain/gasoline-octane.html) last updated 20 November 1999.
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