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Re: Does race gas improve every engines performance?
[Re: bumps440]
#1066447
08/31/11 05:36 PM
08/31/11 05:36 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
... do your research online before you make a comment here...
If that was a requirement before loggin into this place (or the internet in general), there wouldn't be much posting going on! 
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Re: Does race gas improve every engines performance?
[Re: BradH]
#1066448
08/31/11 05:40 PM
08/31/11 05:40 PM
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Joined: Oct 2003
Posts: 1,170
Westbury, NY
bumps440
super gas
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super gas
Joined: Oct 2003
Posts: 1,170
Westbury, NY
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Quote:
Quote:
... do your research online before you make a comment here...
If that was a requirement before loggin into this place (or the internet in general), there wouldn't be much posting going on!
But Brad. why would someone recommend wrong info. my point is , If you dont know, dont say.
I know you and a few others here are very knowledgeable. and welcome your info.
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Re: Does race gas improve every engines performance?
[Re: bumps440]
#1066449
08/31/11 07:40 PM
08/31/11 07:40 PM
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Joined: Jan 2007
Posts: 780
Woodinville, WA
Viol8r
super stock
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super stock
Joined: Jan 2007
Posts: 780
Woodinville, WA
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Quote:
Quote:
More octane only makes you go slower if you dont need it to prevent detonation. The higher the octane the slower the gas burns.
This is not true.
do your research online before you make a comment here. Race gas need to burn fast not slow. dont confuse anti detonation qualities with slow burn.
An oxygenated gas of higher octane along with richening it up a bit will make more power.
Anyway there are s lot of sites that "teach" about racing gas and its properties. I suggest you start reading.
Pretty hostile for someone that does not know how to use spell or grammar check!! 
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Re: Does race gas improve every engines performance?
[Re: Viol8r]
#1066451
08/31/11 08:15 PM
08/31/11 08:15 PM
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Joined: Jan 2007
Posts: 3,695
nc
emarine01
master
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master
Joined: Jan 2007
Posts: 3,695
nc
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Man I love fuel posts....  .... Lots of good info and lots of opinions, The only thing I will add is..... If ya ain't got enough octane for the pressure , heat , and spark timing.... Its gonna be a bad day.... There is a ton of power to be had in the fuel you choose to burn and its not that easy to find the perfect match for every combo.... That's half the fun, even when ya think you have the perfect fuel there's.... A/F ratio, Air temp and all the other ever changing variables to consider every time ya try to make max power, Any how the opp posted 10.75 to 1 compression  That means absolutely nothing with out knowing cyl pressure and intake closing, one mans 10.75 can run fine on 93 and an others will knock the porcelains off the plugs  Where are all the nitrous guys when ya need them, They have good stories about melting things when things aren't right and sometimes even good pictures 
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Re: Does race gas improve every engines performance?
[Re: julian2007]
#1066456
09/01/11 10:41 AM
09/01/11 10:41 AM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Years ago my friends and I bought three brand new rm 250 dirt bikes and they could never figure out why mine was faster than theirs I ran 112 they ran pump gas.Mine would flip over in 6th gear theirs would just get the tire off the ground.My chain saw also loves it 1st pull every time but with pump gas two or three pulls, you can lay on the saw harder to with the 112.Their are lots of people smarter than me I can't tell you anything about burn rates or the reasons why it should or should not work but I have run 112 in everything from a chain saw to a bass boat to a race car and always had better performance. 
My friend owns a couple thousand acres of land down in southern Ky. About 10 of us would go down there and ride dirt bikes for the weekend. I used to run race gas straight in my bikes and the guys behind me would complain about the smell of my bike from following me. I'd tell them to get in front of me if they could. 
Couple of my other buddys would run it too, straight. You could taste it in your mouth after a few hours on the trail. It would make your beer taste like  at the end of the day.
So we started mixing it 50-50 just so it didn't smell so bad in the woods. lol They knew when we were runnig race gas from the smell. 
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Re: Does race gas improve every engines performance?
[Re: Clanton]
#1066458
09/01/11 11:17 AM
09/01/11 11:17 AM
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Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11
super stock
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super stock
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
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As previously mentioned, octane rating is a measurement of resistance to detonation. It needs more heat to light off. Burn rate is another story altogether. Race fuels burn faster than pump fuels. Too much octane and not enough heat will lead to an incomplete burn, which is why many of you have gone down in octane and went faster. If you have too much octane for the combination you are running, the chambers and piston tops will not carbon up like they should. I'm not talking 1/4" thick, it's burning oil carbon, but that thin, black to brown coating the tops of the pistons and the chambers get when it's running good.
Here's something for people to think about: do we run race gas so we can have high compression or do we have high compression so we can run race gas?
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Re: Does race gas improve every engines performance?
[Re: max_maniac]
#1066459
09/01/11 12:17 PM
09/01/11 12:17 PM
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Joined: Feb 2003
Posts: 1,646
Ontario,Canada
firefighter3931
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,646
Ontario,Canada
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Quote:
IF he keeps the trunk full of the beer you don't need it but if he empties it  and I know we/he will then you don't stand a chance
Or could also be said if Alexander Keith is in the trunk you win and if he lets him out you lose
Russ 
Hi Russ
No worries...we'll let that Keith's guy out of the trunk so you Ohio guys can play with him  
Mine runs fine on 93 pump swill....no jungle juice needed ! 
Ron
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Re: Does race gas improve every engines performance?
[Re: firefighter3931]
#1066461
09/01/11 01:36 PM
09/01/11 01:36 PM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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Bottom line is just putting race gas in a car wont make it faster. But if its a race eng then you can tune for more timing and so on so that you can make the most power without eng knock using race gas. I see some guys that run timing back at 30 on the street but when they race they add race fuel and bump the timing to 38 or about which they cant do on high enough comp and to low octane. Like was said race gas burns slower as it resist knock better that way and all gasses are not created equal. Try to start your hotrod in 20 degree temps with race gas and then try it with 92 pump and see which makes it easier to start in cold temps. The faster burning pump will start easier in cold temps because of its nature. I build my engines to run on 92 pump even with my timing at 38 as thats what I want because my cars are street cars. My new eng has good .045 quench and alot of cam to keep the cyl pressure good enough that it runs great on 92 pump. Heck 3.85 a gallon cost enough for me without even thinking about the price of race gas. Ron
Last edited by 383man; 09/01/11 01:38 PM.
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Re: Does race gas improve every engines performance?
[Re: Labratt]
#1066463
09/01/11 03:29 PM
09/01/11 03:29 PM
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Joined: Jul 2010
Posts: 3,502
SOUTH JERSEY
HEMIFRED
master
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master
Joined: Jul 2010
Posts: 3,502
SOUTH JERSEY
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do to the shape of the Hemi's combustion chamber higher octane fuel does not burn as fast . many nold pro stockers ran 12.5 rather than 13.5-1.
I never ran more than 110 in the majority of those motors.
home of the
Sox and Martin Hemi Duster
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Re: Does race gas improve every engines performance?
[Re: dodgeboy11]
#1066465
09/01/11 05:42 PM
09/01/11 05:42 PM
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Joined: Dec 2009
Posts: 20,655
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,655
in a cattle trailer down by th...
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Quote:
Here's something for people to think about: do we run race gas so we can have high compression or do we have high compression so we can run race gas?
I runz racin gas cause it stinks real good.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Does race gas improve every engines performance?
[Re: Guitar Jones]
#1066466
09/01/11 05:54 PM
09/01/11 05:54 PM
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Joined: Jul 2003
Posts: 12,129
Cleveland
sunroofgtx
OP
I Live Here
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OP
I Live Here
Joined: Jul 2003
Posts: 12,129
Cleveland
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Great info guys. I have been on the road since 3 am. At the Yellow Bullet Nats at Cecil County Raceway in Maryland. I'll try 10 gal 93 and 5 gal 110. I need to see if they'll let me make some T& T. They are pretty stiff here on the rules. Not sure I can go the 11.50 or over. Great info, I really learned a lot in a short time. Thank you guys.
Join the quickest team in motorsports. Team FireCore. CustomWiresets.com
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Lookin' forward to quaffing a few with my buddies...who,unfortunately,I don't see nearly often enough! 
Rick...I agree with Brad...won't know the answer until you try some! I'd start with a 50/50 mix of 93 pump and 110...see if it improves ANYTHING! If so..maybe bump up the ratio to 60/40...or 70/30. One of these days that's what I plan to do with the GTX...even though mine seems to run without any signs of detonation at all. 10:25 compression,aluminum heads...and 38* total timing. 
