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Old 09-02-2010, 06:26 PM
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octane boosters that really work

Unfortunately my 64 GTO still has the stock pistons and heads( 10.5 C.R. ), can any Forum members recommend an octane booster that really works. Locally the best premium I can get is 93 octane.

all replies appreciated

Ron
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79 CJ7
87 Jeep Grand Wagoneer

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Old 09-02-2010, 06:34 PM
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93 Should be fine with a good tune. I'm running 10.3 on 92 without a problem.
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Old 09-02-2010, 06:44 PM
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Quote:
Originally Posted by Greg T
93 Should be fine with a good tune. I'm running 10.3 on 92 without a problem.
Yeah, but you're probably using a tight squish. This guy probably has pistons down in the bore by 0.045" plus the head gasket thickness plus deposits of tetraethyl lead that have been in the chambers since 1971 and that glow and pre-ignite the mixture.

Most of the octane boosters I have seen refer to one, two, three or more octane "points". Sounds like you could easily go from maybe 93 to 96 with a bottle of the stuff. But when you read the fine print on the label, you will find out that a "point" to them means 1/10th of a point in the real world. In other words, three points to them would change 93 to 93.3 octane. Sort of makes you want to slap somebody doesn't it?

Last edited by techinspector1; 09-02-2010 at 06:50 PM.
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Old 09-02-2010, 06:47 PM
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last year i was towing and i forgot to put good gas in the truck... thought the heads were going to explode off,it was horrible. the trucks tank was full... stopped at a gas station and found some 104 additive. i had never used it before. 25 gallons of reg nolead and i bottle of 104 later.. no detno up the biggest hill in the area in 90 ` temps. couldnt beleive it.
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Old 09-02-2010, 06:53 PM
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I'm only recommending the octane booster.
It really does'nt matter what brand...
It has to have MMT in it read the ingredients.
If it does not have MMT dont use

I think tech insp is right bout the TE lead,but dont mess with that stuff,if u get it in an open cut,its sheet time and probably game over.
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Old 09-02-2010, 07:19 PM
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Octane boosters don't work

tulene? I think that's the stuff. Not cheap but you can mix it in a full tank and get over 100 octane easily. They carry it in paint stores and there's tons of mix ratios online. I could have researched before posting but it's a start.
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Old 09-02-2010, 07:33 PM
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Quote:
Originally Posted by bubbahotep
Octane boosters don't work

tulene? I think that's the stuff. Not cheap but you can mix it in a full tank and get over 100 octane easily. They carry it in paint stores and there's tons of mix ratios online. I could have researched before posting but it's a start.
Toluene works good, be carefull ,you r fooling with chemistry that can cause serious engine damage!
I bet tech inspector seen many a cheating with fuel chemistry!!!
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Old 09-02-2010, 07:33 PM
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Quote:
Originally Posted by gto_ron
Unfortunately my 64 GTO still has the stock pistons and heads( 10.5 C.R. ), can any Forum members recommend an octane booster that really works. Locally the best premium I can get is 93 octane.

all replies appreciated

Ron
64 GTO
79 CJ7
87 Jeep Grand Wagoneer
Stop by your local airport and pick up some Av fuel as a mix with your 93.
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Old 09-02-2010, 07:56 PM
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Anybody know if moth balls really work? My old autoshop teacher seemed to think they did...
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Old 09-02-2010, 08:01 PM
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Moth balls work REAL good- at promoting detonation.

The "idea" was to use them to rattle the carbon out of the combustion chambers and piston crowns- thus reducing octane requirements and/or removing preignition causes.

This was also in the days of 5.5:1 CR.
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Old 09-02-2010, 09:49 PM
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Quote:
Originally Posted by topwrench
I bet tech inspector seen many a cheating with fuel chemistry!!!
Yep, I held a NHRA National event Fuel Check license for a few years. Best bust was two alcohol funny cars using propylene oxide. Never saw them again after that.
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Old 09-03-2010, 12:00 AM
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Quote:
Originally Posted by techinspector1
Yep, I held a NHRA National event Fuel Check license for a few years. Best bust was two alcohol funny cars using propylene oxide. Never saw them again after that.
Very unstable, poisonous, wicked,stuff, I think flash point is well below-30f
Used to produce plastics and anti-freeze(propylene glycol)
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Old 09-03-2010, 07:03 AM
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Toluene is the best and safest to use to boost octane...
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Old 09-03-2010, 01:40 PM
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I have no experience with this whatsoever, but just a thought. If you have a local source of ethanol, perhaps a carb conversion may be a way to solve your deliema.. ??
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Old 09-03-2010, 01:52 PM
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Quote:
Originally Posted by 406 bug
Stop by your local airport and pick up some Av fuel as a mix with your 93.
CAUTION 100LL avgas still has lead in it! If you have a catalytic converter the lead will destroy it! Also, in most states it is illegal to use avgas in an over-the-road vehicle because there are no highway taxes on avgas. 'Course, it's only illegal if you get caught!!
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