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Old 04-13-2009, 12:40 PM   #1
bignissan
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Race fuels

Any recommendations? Do two-strokes prefer something different? Sources? I don't want to deal with all the detergents and such from the corner store. I'm working on getting the jetting nailed down on the bike and would prefer to have a consistent set up every time.
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Old 04-13-2009, 12:50 PM   #2
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Quote:
Originally Posted by bigbob65 View Post
2 stroke go with either 89 oct. or 93. and Mix in your oil. usually 4 and a half ounces per gallon.
that depends on the ratio that the manufacturer suggests. some are 30:1, some 40:1, some as low amount of oil as 50:1. it all depends on the bike
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Old 04-13-2009, 12:56 PM   #3
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your 65 will want 32:1 ratio. Try Klotz Nitro. that's what Wes recommends, and what I use. 2 oz per gallon
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Old 04-13-2009, 01:28 PM   #4
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Quote:
Originally Posted by Godsuki View Post
your 65 will want 32:1 ratio. Try Klotz Nitro. that's what Wes recommends, and what I use. 2 oz per gallon
I use 32:1 also, but that works out to 4 oz oil per gallon of fuel.
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Old 04-13-2009, 08:29 PM   #5
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So do you pre-mix gas(pump?) and oil, THEN add 2 oz of the nitro?
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Old 04-13-2009, 08:46 PM   #6
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Quote:
Originally Posted by bignissan View Post
So do you pre-mix gas(pump?) and oil, THEN add 2 oz of the nitro?
sure do
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Old 04-13-2009, 09:25 PM   #7
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I've often wondered if race fuel makes much of a difference in 4 stroke bike? I've thought about trying it but I don't think I'm fast enough to notice a difference.
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Old 04-14-2009, 06:24 AM   #8
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Quote:
Originally Posted by bigbob65 View Post
so you mean 4 oz of 2 stroke oil and 2 oz of the nitro?
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Old 04-14-2009, 07:01 AM   #9
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will adding to 2 oz. of nitro make it run better?
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Old 04-14-2009, 07:13 AM   #10
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Quote:
Originally Posted by spring r1 View Post
will adding to 2 oz. of nitro make it run better?
oh yeah! Huge difference. You can run up to 4 ounces, but you have to add +5 to your main jet with every 2 ounces. So at 4 ounces, that would be +10 already

http://performanceunlimited.com/cobr...additives.html

Race fuels


 blnk  blnk



KLOTZ NITRO POWER ADDITIVE
A custom-blended liquid supercharger developed for gasoline engines. Designed to extract that last bit of power from stock or modified engines. Dyno tests show 30-40 hp increase may be obtained using this product. Nitro creates additional oxygen which allows more fuel to be added, thus increasing H.P. output. This may be done by increasing the jet sizes in carburetors, or most EFI systems will detect and richen the mixture automatically. Periodically monitor plug conditions to insure correct results. Contains Koolinal as a blender & cooling agent which resists against heat & pre-ignition, plus a stabilizer to assure maximum power output under varied weather conditions. Nitro will generate extra power & heat (however, heat is the limiting factor). If engine starts to build excessive heat, the quantity of Nitro must be reduced to avoid possible engine damage. Sustained high RPM also is the deciding factor, since short bursts of WOT reduce risk of engine damage at higher mixture concentrations. Nitro Additive is intended for use with gasoline only.
Dyno & racing tests indicate the yield of these added benefits...
* Developed for gasoline * Contains 50% nitro propane
* Contains no oil * Contains 50% blenders/coolants
* More usable H.P. & Acceleration * More RPM's
* Designed for stock or mod. engines * Distinctive "powerful" odor
DIRECTIONS:Mix one 16 oz, can with 5 gallons of gasoline (3oz./gal) as a start. Cooler heat range spark plug for sustained high RPM racing speeds may be necessary. Contains special cooling agents, however if too much Nitro Power Additive is added to fuel, excessive heat may occur. Use as directed to avoid serious engine damage.
JETTING: Richen low and high speed jets approximately 4-6 numbers as needed. Retarded timing may be required with applications over 4 oz. per gallon. Carefully experiment by trial and error to find the best combination. Try not to allow Nitro mix from remaining stored in a fuel can or tank for long periods of time.
NITRO MIXING RECOMMENDATIONS (oz. Per gal):
1 = Little or no performance increase. Keeps plugs clean, reduces fouling. No significant jet change required. Very little exhaust odor.
2 = Minimal performance increase. 1 or 2 jet number increase suggested. Notable racy odor.
3 * Notable performance increase. Safe as a beginning mixture. 2-3 jet increase recommended. Very notable racy odor.4 = Significant performance increase. Most popular if properly monitored & adjusted. 3-4 jet inc. required. Significant racy odor.
5 = Startling performance increase. Use carefully and cautiously. 4-6 jet increase mandatory. Significant racy odor.6+ = Maximum performance increase. Exceeding normally used threshold. For the professional only. Significant racy odor.
Flash point: 82 Degrees ~ SAFE FOR UNLEADED and CATALYTIC CONVERTER APPLICATIONS
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Old 04-14-2009, 09:14 AM   #11
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Isn't using of oxygen enriched fuel additives prohibited in TMGP? Nitropropane is C3H7NO2, which can be considered oxygenated additive.
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Old 04-14-2009, 09:15 AM   #12
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Quote:
Originally Posted by Oskar_Z28 View Post
Isn't using of oxygen enriched fuel additives prohibited in TMGP? Nitropropane is C3H7NO2, which can be considered oxygenated additive.

yes, it is prohibited in TMGP. I do not use it in TMGP racing
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Old 04-14-2009, 09:19 AM   #13
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got it.

That being said, is thsi stuff corrosive and will it damage any fuel system components?
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Old 04-14-2009, 09:23 AM   #14
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Quote:
Originally Posted by Oskar_Z28 View Post
got it.

That being said, is thsi stuff corrosive and will it damage any fuel system components?
I have used it with very good results on the big tracks, with 20+ hours of riding time and after 2 tear downs, I saw no signs of damage, corrosion, or anything harmful to the engine or carb. In fact, it cleaned up the engine very nicely

I also use this in my Gixxer and have had equal results, although I have not done a taer done on the engine.
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Old 04-14-2009, 10:30 AM   #15
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i usually always ran 93 octane in my 2-strokes with a full synthetic amsoil or motul premix oil at about 40:1 ratio.. 32 or 33:1 is alittle too rich and you don't really need that much.. always had good luck and results with that.. not to mention it's less expensive then race gas.. if you can afford it then go for it. VP race fuel is always good
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Old 04-14-2009, 10:33 AM   #16
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Quote:
Originally Posted by kdog22 View Post
i usually always ran 93 octane in my 2-strokes with a full synthetic amsoil or motul premix oil at about 40:1 ratio.. 32 or 33:1 is alittle too rich and you don't really need that much.. always had good luck and results with that.. not to mention it's less expensive then race gas.. if you can afford it then go for it. VP race fuel is always good
but you didn't use it in an application like endurance racing. These motors will be wound up tight for hours on end. They need all the lube they can get
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Old 04-14-2009, 10:58 AM   #17
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In my thinking 32:1 is more rich than 40:1. 32:1 provides more lubricating oil though.

When you run more oil then the mixture is more lean as there is not as much gas available for combustion as the oil replaces the gasoline.
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Old 04-14-2009, 05:28 PM   #18
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Last edited by Tim Vipond; 04-14-2009 at 05:33 PM.
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Old 04-14-2009, 08:53 PM   #19
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Old 04-15-2009, 07:15 AM   #20
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