Supra Forums banner

Whats your opinion?

  • I use these Homemade concotions; They are safe!

    Votes: 18 66.7%
  • I think its dangerous for my car

    Votes: 0 0.0%
  • I wouldnt put this shit in my tank!

    Votes: 9 33.3%

  • Total voters
    27
1 - 20 of 22 Posts
B

·
Guest
Joined
·
0 Posts
Discussion Starter #1
Homeade Octane Booster?
Anyone ever use this method of upping the octane?

Sounds "risky" to say the least but then again i dont have anything over 93oct in the area....


Homemade Boosterfrom "http://www.vtr.org/maintain/gasoline-octane.html"

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.


--------------------------------------------------------------------------------

VTR WWW Editor's Note: This article has been included on the VTR pages because this topic is frequently of interest to Triumph owners. However, VTR has no special knowledge about octane boosters. Please do not address correspondence for further information on octane boosters to VTR.
 

·
Registered
Joined
·
946 Posts
well I heard some people use liqued nitro methane like a tablespoon of it in there fuel tank to rais oct or something like that.
Don't know if it's true.
 

·
Registered
Joined
·
1,423 Posts
I have used dimethyl benzine. It yielded good results ( less knock counts on the SAFC 2 and dyno HP). But nobody's sure how good of an octane booster it really is. Mathematical equations don't tell the whole story.

I would rather play it safe and use VP racing fuel. If you can't with the high price, I would lower boost or switch wastegate springs.
 

·
Union Proud
Joined
·
656 Posts
:agreed: w/ Grumpy

I wouldn't fuck around with homemade shit, especially if your engine's at the point where you're using it - I wouldn't risk blowing something or everything. I'd go with racing fuel first and commercially sold octane boosters second, and homemade boosters never. Just scares me, I'm no chemist.
 

·
Registered
Joined
·
2,705 Posts
I've used Toluene and Xylene before and it's safe. My engine hasnt blown up and is still running fine. If you guys do a search on here , you'll see that many others have used it before and why it is safe. Toluene and Xylene are common additives in regular higher octane fuels as well.

IIRC, search Suprasol on here, he logged timing using pump gas, pump+toluene and reported that the ecu gave back some timing when using toluene which indicates that it did indeed raise the octane where as at the same boost level, the ECU was pulling timing on pump gas.

Of couse mixing toluene or xylene will never replace real racing fuel but this is much better than any of those off the shelf "Octane Booster" that suckers buy that only yields 0.1-.05 octane increase.
 

·
Vengeance is mine
Joined
·
907 Posts
I've used xylene before and it made a noticeable improvement, Didnt hurt anything, really makes a big diff int he summer time, I dont run more boost when I use it , it just amkes the car feel "crisper"
 
H

·
Guest
Joined
·
0 Posts
Discussion Starter #8
ToMuchBoost said:
well I heard some people use liqued nitro methane like a tablespoon of it in there fuel tank to rais oct or something like that.
Don't know if it's true.
my buddy tried that he didnt notice a difference.
 

·
Registered
Joined
·
73 Posts
you don't need a chemistry degree, it is simple math with toulene and xylene.

race gas is actually cheaper by the gallon from what i have seen compared to toulene and xylene though.

whatever you decide to do just don't waste your money on the gimmick octane boosters they sell at autozone for morons who have no clue.
 

·
Registered
Joined
·
240 Posts
Toulene and Xylene both works fine when you mix it correctly... make sure you don't forget to add the MMO... I personally made over 620 rwhp on 1.9 bar on just toulene and pump mix... on a 64... should've made more but computer was pulling timing due to some reason the car was about about 3/4 gallon short of coolant which I later found out that night... thats why the car would not get off of 13's on the A/F while on the dyno yet on the road it was perfectly tuned to 11.2-11.8 so it would've made more if the car wasn't really low on coolant.... another friend had a TO4 R on a .81 housing made little over 680 rwhp at 2 bar... same toulene and pump and MMO mix I was on... car ran great... I personally been using it for three years. cheaper and I don't have to try to track down race gas late at night... I just mix them... not to mention my car has maybe seen race gas a handful of times.... locals all know thats what I use too... domestics and import guys :)
 

·
I'm back!
Joined
·
6,710 Posts
LUCKYDEVIL said:
you don't need a chemistry degree, it is simple math with toulene and xylene.

race gas is actually cheaper by the gallon from what i have seen compared to toulene and xylene though.

whatever you decide to do just don't waste your money on the gimmick octane boosters they sell at autozone for morons who have no clue.
Speaking of race gas, you guys pick me up some C16 so we can tune after we do the pump gas runs..if you go near the place that Horacio buys his from.
 

·
Very Senior Member
Joined
·
9,964 Posts
Tska said:
:agreed: w/ Grumpy

I wouldn't fuck around with homemade shit, especially if your engine's at the point where you're using it - I wouldn't risk blowing something or everything. I'd go with racing fuel first and commercially sold octane boosters second, and homemade boosters never. Just scares me, I'm no chemist.
"commercially sold octane boosters" are useless.
"homemade boosters" have worked.
some folks don't live anywhere near a station with race gas (me, for example!).
 

·
Registered
Joined
·
6,785 Posts
Ive done the math, its usually cheaper to just mix w/ racegas
 

·
Super Big D. Moderator
Joined
·
1,078 Posts
I have used toluene for years.. as a matter of fact i used to have an over lay of my car on c16 on the dyno and later toluene. and they were with in 1 rwhp of each other and the curves were identical.
 

·
Very Senior Member
Joined
·
9,964 Posts
BigManne said:
i have a frined that majored in chemical engineering. that was telling me something about moth balls. anyone heard anything about that?
Yeah - I've heard of moth balls. They are real little and should not be put into fuel tanks. The moths need them.
 
1 - 20 of 22 Posts
Top