Mixing race gas and 92 octane?

[NotoriousGT350]

A buddy and I plan on going racing Sept 25 and want to run some good times. I thought about mixing some race gas(103-106 octane)?? and 92 octane and bumping my timing from 10-14*. What are some suggestions if any on mixing the gas and timing?

After the races, I'll set my timing back to 10*(depending on how I like 14*). Will there be a problem running 10* with the left over mixture of race and 92 octane? I usually run 86-87 without any problems.

My friend already has his timing at 14*, but I'll have to change mine if we find someone with a timing light.

 

[Rick 91GT]

Race gas will only slow your car down, it does need need anyhting more then 93 octane. You'll find you most likely will be able to run 17 degrees timing, however most stock style combos like yours will like 15-16 degrees.

So I'd go 15 degrees and 89-92 octane.

Race gas is made for high compression combo's, or combos that will produce a lot of heat (large N2O and blower).

 

[Daggar]

I think you're spinning your wheels man. Running higher octane gas does not give you more power. One of the nice things about race fuel is that it's typically designed with an additive that allows it to absorb and carry more oxogen with it to the motor (nice). The trouble is that when you start mixing it with pump gas you're removing that advantage.

Recommendation: Advance your timing to 14 or 16 degrees and run the lowest octane gas you can get away with. The lower the octane the better and more completely it burns the more power you will make.

 

[04sleeper]

Recommendation: Advance your timing to 14 or 16 degrees and run the lowest octane gas you can get away with. The lower the octane the better and more completely it burns the more power you will make.

Agreed!

 

[NotoriousGT350]

Thanks for the replies. In that case, I'll just fill up with the usually 86 octane and advance my timing. Gonna give my friend the heads up on the advice before race day.

 

[Demented4.6]

just listen for detonation. if you advance too far you might need 89 or 92 to stop pinging or just back off timing.