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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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Mixing race gas and 92 octane?

  • Thread starter Thread starter NotoriousGT350
  • Start date Start date Sep 18, 2004

NotoriousGT350

Founding Member
Apr 3, 2001
891
0
17
Lubbock, TX
Sep 18, 2004
#1
  • Sep 18, 2004
  • #1
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

Mustang Master
Nov 29, 1999
9,692
95
99
PA
Sep 18, 2004
#2
  • Sep 18, 2004
  • #2
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).
 
D

Daggar

New Member
Jul 19, 2004
3,902
5
0
Sep 18, 2004
#3
  • Sep 18, 2004
  • #3
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

Founding Member
Jun 22, 2002
2,674
14
89
Dallas, TX
Sep 18, 2004
#4
  • Sep 18, 2004
  • #4
Daggar said:
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.
Click to expand...
Agreed!
 

NotoriousGT350

Founding Member
Apr 3, 2001
891
0
17
Lubbock, TX
Sep 18, 2004
#5
  • Sep 18, 2004
  • #5
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.
 
D

Demented4.6

Founding Member
Mar 14, 2001
1,055
1
38
DAYTON, OHIO
Sep 18, 2004
#6
  • Sep 18, 2004
  • #6
just listen for detonation. if you advance too far you might need 89 or 92 to stop pinging or just back off timing.
 
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