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Old 11-13-2010, 08:57 PM   #1
The Trav
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Race gas debate

So, i got into a heated debate with a friend the other night over the topic of race gas usage.

I argue that a lot of people run race gas merely to say "i run race gas". Most people that are running race gas DO NOT have any reason for running it.

They like the smell, or the look of the exhaust, or being able to say that yeah, i run race gas.

I'm NOT talking about mrx09/gain a few hp gas, im talking about leaded race fuels (ie. c12/c16) in a BONE stock bike with no tune.


He argues that no one runs race gas without actually needing it.

I laughed my off, as i have seen many people with BONE stock motors at the track AND on the street, running c12/c16/q16 for NO REASON except to waste money.

Most people think that if they throw 100+ octane leaded fuel "race gas" in a stock bike, it will go faster, make more hp, etc YOU ARE SLOWING THE BURN FOR NO REASON!

Obviously no one is going to say that they run race gas in a stock bike for no reason, but i want to know what yall think.

Who runs what gas, in what kind of bike?

For instance, I HAVE to run higher octane fuel in my bike. It will knock and ping like a without it. BUT i have higher static compression ratio/and more cylinder pressure than what came from the factory.
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Old 11-13-2010, 09:11 PM   #2
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I was told that reg was fine for my ZZR, but use super b/c the manual says 90+ or severe engine damage. I guess this is becuse the J series Ninja was designed in 99 (i believe).
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Old 11-13-2010, 09:15 PM   #3
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87 is the new hotness. Its what my mom told me to use.

(stock sv650..)
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Old 11-13-2010, 09:16 PM   #4
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Quote:
Originally Posted by The Trav View Post
For instance, I HAVE to run higher octane fuel in my bike. It will knock and ping like a without it. BUT i have higher static compression ratio/and more cylinder pressure than what came from the factory.
How much more? What bike? How big of motor? I know guys with 250lbs of compression running 87-89oct and no higher than 98oct without a problem.

I agree, most people who ride on the street with occasional track use put race gas in just to say they did not knowing it slows them down unless tuned for it
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Old 11-13-2010, 09:19 PM   #5
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a bit more, its a stroked gsxr 1000 with shaved head and thin gasket. it was pushing 245ish psi before the stroke.
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Old 11-13-2010, 09:23 PM   #6
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I have never used anything but 87 in any bike.
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Old 11-13-2010, 09:26 PM   #7
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Quote:
Originally Posted by gtdrivr View Post
I have never used anything but 87 in any bike.
what kind and year?
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Old 11-13-2010, 09:28 PM   #8
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Lol lol this thread is funny think I will run race fuel on the streets just to be cool and use it at the track to be faster than the slower of the slow in club track riding lol. LOOK you not gonna be Rodeo at the track or on the street. Lol
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Old 11-13-2010, 09:34 PM   #9
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Just laugh at the stupidity of your "friend" and his lack of knowledge on the subject.

Im sure some people are running race gas just to do it, and say they are doing it, BUT..

Running $16/gallon gas for "fun" wtf?
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Old 11-13-2010, 09:38 PM   #10
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Quote:
Originally Posted by Mark06gsxr View Post
Just laugh at the stupidity of your "friend" and his lack of knowledge on the subject.

Im sure some people are running race gas just to do it, and say they are doing it, BUT..

Running $16/gallon gas for "fun" wtf?
Maybe his buddys Rich. I would run it if I were rich just so people would make a thread about me.
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Old 11-13-2010, 09:38 PM   #11
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87 on everything.

GJ
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Old 11-13-2010, 09:39 PM   #12
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i dont understand it.
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Old 11-13-2010, 09:53 PM   #13
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Race gas with NO ethanol......

93 octane with no ethanol.....

any gasoline with no ethanol.....

I prefer any of the above to pump gas WITH ethanol, unless it is that nasty race gas that turns to jello in your tank......and carbs....or injectors.....or everywhere it has been.

As for cylinder pressures and higher octane fuels, you can tune injected stock GSXRs with race fuel to produce higher peak HP than they can make on 87 octane fuel. Or at least I can say that I have witnessed it several times on an eddy current dyno.
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Old 11-13-2010, 10:00 PM   #14
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Quote:
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what kind and year?
05 ZX10, 03 CBR954, 01 SV650 were the last 3
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Old 11-13-2010, 10:11 PM   #15
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Higher octane allows higher compression which is what gives you more power.
A higher octane alone will NOT give you more power, period.
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Old 11-13-2010, 10:12 PM   #16
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Quote:
Originally Posted by gtdrivr View Post
05 ZX10, 03 CBR954, 01 SV650 were the last 3
I can't understand why mine needs 90+ then. I even tried med vs super, and it just didn't feel as crisp on the throttle.
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Old 11-13-2010, 10:18 PM   #17
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Quote:
Originally Posted by Patrick View Post
Higher octane allows higher compression which is what gives you more power.
A higher octane alone will NOT give you more power, period.
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Old 11-13-2010, 10:19 PM   #18
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Any fuel with more octane than the motor is designed to be used with is a complete and udder waste...

YMMV but that is the fact.

Oxygenators, cleaners and other additives are subject to debate.
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Old 11-13-2010, 10:19 PM   #19
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Quote:
Originally Posted by Patrick View Post
Higher octane allows higher compression which is what gives you more power.
A higher octane alone will NOT give you more power, period.
PATRICK I wish I were drunk so I have a excuse and i wouldnt have to reread this 10 times but Im lost on this statement


NEVER MIND IM STUPID. I REREAD IT LOL
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Old 11-13-2010, 10:23 PM   #20
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Quote:
Originally Posted by Patrick View Post
Higher octane allows higher compression which is what gives you more power.
A higher octane alone will NOT give you more power, period.
Then what the is up with my bike then Patrick (07 ZZR600/ZX6R J series).
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