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racing fuel

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cbr-racer

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racing fuel
« on: April 26, 2006, 06:08:17 pm »
Has anyone heard of KLOTZ racing fuel ?
If so how good is it, is it legal in CCS?
Is it even for road racing?
thanks ???
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BlueRidgePerformance

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Re: racing fuel
« Reply #1 on: April 26, 2006, 06:19:45 pm »
Has anyone heard of KLOTZ racing fuel ?
If so how good is it, is it legal in CCS?
Is it even for road racing?
thanks ???
It's legal, they make different blends. Klotz is a good product.Not as good as VP though
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cbr-racer

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Re: racing fuel
« Reply #2 on: April 26, 2006, 06:45:27 pm »
 :) Thanks.
I found some here in KY 100 octane & 113 octane for $45.00 I think it was in 1 or 2
gallon can.
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dylanfan53

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Re: racing fuel
« Reply #3 on: April 26, 2006, 08:48:49 pm »
There are lots of high octane race fuels out there but that doesn't mean your engine will run better with them.  It can run much worse than with pump gas.  You really have to do the dyno thing or you're guessing and probably wasting money.
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Super Dave

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Re: racing fuel
« Reply #4 on: April 27, 2006, 08:14:29 am »
:) Thanks.
I found some here in KY 100 octane & 113 octane for $45.00 I think it was in 1 or 2
gallon can.

I am assuming that the 100 octane is unleaded?
113 is leaded?

Racing fuel is all over the map.  Most "high" octane fuels in the 110 to 114 range I would call hobby fuels.  Might overcome the pinging in a high compression car motor with a poorly shaped combustion chamber.  But because of it's slow flame speed, it wouldn't be appropriate in a high reving four stroke motorcycle engine.  Often, it will reduce the power.

Additionally, the specific gravity of the fuel is lower than pump gas, so you end up with too much fuel in your air to fuel ratio.

Legality in CCS is now pretty simple.  As long as the fuel conforms to the specifics of dielectric tests that the manufacturers provide, you're fine.  And it must be gasoline.  You can't run methanol.

What do you want? 

Leaded oxygenated racing fuels do work, when set up correctly.  Does not have to be "high" octane.  Unleaded racing fuels do not have a uniform buring of their flame front, where a leaded one does.  An oxygenate in the fuel...it adds more oxygen to the combustion chamber that can be used.  So, you will add more fuel, everything being equal, to use that oxygen.  If you don't, you'll be lean. 

Pump gas, regular old gasoline for your car, usually carries some kind of oxygenate.  It has a fast flame speed.  It's just unleaded.  I have done work in mixing pump gas and a small amount of a quality leaded racing fuel and had good results. 

I'd be happy to try to answer more questions if you have any.

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Super Dave

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Re: racing fuel
« Reply #5 on: April 27, 2006, 03:56:47 pm »
Thanks for the info Super Dave,
Here is my ? I have a 600f2 jetkit, K&N filter full yosh system.
Would this work or should I  stay with high octane pump gas.
This is what I found.

" KLOTZ 100 Octane Racing fuel is designed for 4-stroke performance enthusiasts
& racers who want maximum performance from their stock engines. Builds more
power & torque than pump gas. Low lead content & special additives keep
intake & exhaust valves clean for unrestricted airflow. Detergents scavenge
lead & carbon deposits from plugs, combustion chambers for trouble free
performance. Will not harm carburetors, fuel lines, orings or gaskets. "
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Super Dave

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Re: racing fuel
« Reply #6 on: April 27, 2006, 04:11:19 pm »
Tech sheet on the 100 wasn't complete.  The 100 Oxygenated stuff had a more complete tech sheet.  I'd go with oxygenated stuff.  Seems to be lightly leaded, but based on a couple of things I saw in the tech sheet, I think they might have designed it to be for MX bikes...

The oxygenated stuff is heavy and oxygenated.  So, you'd need to go up, probably, a jet size if not two to make it work.  The non oxygenated stuff is light and unoxygenated.  You might need to go down a jet size or two to make that work right.  Lean is bad, obvously, so if you're gonna try the 100 oxygenated stuff, definitely do the jet work before trying it. 

I haven't used any Klotz, but I hope some of my ideas might give you a starting point.  Fuel is like suspension;  to make it work right, you've got to set it up.  Arm yourself with some of those ideas, and you should have a bit of a handle on things.
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cbr-racer

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Re: racing fuel
« Reply #7 on: April 27, 2006, 05:11:26 pm »
 :) THANKS SUPER DAVE!
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