Homemade Octane Boost ??

[justa6]

Re your>>>They are effective at increasing the equivalent octane rating but why? VP Racing fuels sells oxygenated performance unleaded, 100 octane rated fuel for $4/gallon.<<<<

Your right that it would be easier to buy VP Racing fuels but there is no "place" to buy it where I live. I could probably find someone who sells it but I really don't want to store a 50 gallon drum of the stuff at my house. Plus what do I do if I am out for a ride and need gas. Although that really isn't a problem as the car runs OK on 93 octane, but I wouldn't push it real hard.

Anyway, for me, the Xylene is really easy. I've even just put a gallon can in my trunk, gone to the gas station and put the Xylene into my tank THEN put the 93 on top of it. As I don't have an intank pump on the Cobra that shouldn't be a problem that I can see.

I probably should just run Alcohol injection like my Grand National Buick but I don't want to ruin the "simplicity" of the Cobra.

Regards,

[BOURRET]

I love my engine and spent lot of $$ on it; even with a good chemistry background, I would not dare to make my engine booster.

[sparks]

does aviation fuel have any additives that can harm a motor?

[justa6]

Avgas can have Lead in it. Some doesn't. Needless to say Jet fuel wouldn't work.

Lead won't hurt your motor BUT if you have either a catalytic converter or Fuel injection with an O2 sensor you don't want to use leaded fuel.

To our French friend I'd say some oil company's use Toulene or Xylene to up the octane on their fuel. IF you mix it at no more than 20% you won't have a problem. I and many others have used it for years. I don't think any one on this board wants to hurt their engines as they are ALL expensive.

Oh, and if your compression is low enough you don't need any boosters. They won't increase power in an engine that runs fine on normal pump gas. IMO, of course...

Regards,

[Steve R]

ttt for preservation of this thread