Octane

[pk2]

Originally Posted by Benny986

i agree with most octane boosters, not being worth a whole lot...I use torco race fuel concentrate. I use this in a turbo car, and we bump the timing and boost. ...FWIW, my buddy runs about 1/3-1/2 bottle of torco in his C32 with safeway 91oct. and it went from getting 23.5mpg to 27mpg. YMMV hahah

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Benny

What does a bottle of torco cost? My problem with octane boost additives is they never really tell you exactly what octane boost your going to get with it or they say “up to xxx !!” I say; how, when, where and in what? A lawn mower in Duluth in October?

I've read several articles on octane...my take away is it's pretty fuzzy science (to me). One article praised toluene as a wonder elixir, another chided it because of it burn characteristics (over my little head). I don't recall all the ins and outs but it seemed the “octane boosters” never even made it to the table.

I guess to me it just boils down to is how it compares price wise to a home brew of brand name 100 oct racing fuel and regular name bran pump gas. Both are known entities and the real thing octane wise.

I'm set to up my boost with H2O/methanol injection. For whatever reason this works out to be the equivalent of upping the octane in a round about way. Lot cheaper then 10 bucks a gallon for race fuel.

Regards, PK

[hqduong]

Just thought everyone might be interested since we're on the same topic.

http://personal.linkline.com/dbarton/Unleaded_Racing_Fuel_in_SoCal.html

[Benny986]

you should be able to find it for about 15-20/32oz bottle.

it says right on the bottle. mix with X gallons, use Y oz. and you get Z octane

water/meth injection, nice! : )

[cas951]

We have 3 station in the South Bay that sells 100 octane.

1. There's a Unocal 76 off Almaden Expressway in SJ
2. Vp station in Los Altos. Corner of Magdalena and Foothill Expressway. They sell 93 and 100 Octane
3. There's another station in Woodside off woodside rd.

I've read a few articles in Excellence magazine stating Porsche rate their HP numbers based on 98 Octane in Germany. There's an article on the latest issue by GMG racing. In short they state that California cars who has only 91 octane readily available is not geting the HP ratings advertised by Porsche due to poor Octane rating on the fuel we buy.

I also own a 88 944 turbo S which is slightl modified. Due to the boost increase I will not run below 93 Octane in that car. I do it for detonation insurance. With the higher Octane I am able to run on higher boost which gives me more power.