Xylene, help knock retard???

[It's just a six]

I was wondering if you guys have tried the formula of Xylene to make (qty) 8 ...16 ounce cans of octane booster?
Did it improve your knock retard?
Or ...should I just dump the whole 5 gals mixed w/10 gals of pump gas? :tup:

 

[KETCH-UP]

Re: Xylene, help knock retard???

Yes it works. It costs alot. If you still have a cat converter it is safe to use. I would only use 1 gallon per tank for starters, and log knock data to evaluate. You may have tuning trouble after 2 gallons per tank. The burn characteristics at low temperatures changes in odd ways.Treat it as a toxic substance! Good luck!

 

[It's just a six]

Re: Xylene, help knock retard???

Thanks,
have you tried just putting in 16 ounces to see if it made any difference?
I think it will not make too big a difference.
So... you use 1 gallon of Xylene & 19 gallons of pump or race gas? I think that's the size of our tanks right 20 gallons???

 

[Ty0279]

Re: Xylene, help knock retard???

Xylene is ~116 to 117 octane.

If you're using 93 octane pump gas:

A 1gal:1gal mix of 93:Xylene will give you ~ 104-105 octane (93 + 116 = 209....divided by 2 equals 104.5).

 

[Loeryder]

Re: Xylene, help knock retard???

There are race gas formulas out there on the turbo buick forums to mix your own xylene and pump gas.

I prefer meth injection.
Less maintenace and less chance of spilling it on your cladding. :tup:

 

[myclone]

Re: Xylene, help knock retard???

There are race gas formulas out there on the turbo buick forums to mix your own xylene and pump gas

3 to 1 is the formula I got off of there. Works ok IMO with no KR at 22psi but the stuff is slow burning and requires extended cranking when ambient air temps are cool/cold. :2cents:

 

[It's just a six]

Re: Xylene, help knock retard???

I tried 2 gallons of Xylene today w/about ten gallons of pump gas.
Knock retard was a tad better than before I think I saw roughly 6 degrees of knock retard at the most.
A/F ratio was 12.3 leanest to 11.8 richest.
By my butt dyno it seems to run pretty good. :tup:
Shooting for the 11's

 

[Timbo]

Re: Xylene, help knock retard???

I always use Xylene just to get my gas up to 92 octane.