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 Post Posted: Mon Feb 27, 2012 8:04 am 
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Ok guys the local track is going to have Renegade for fuel and wanted to know what fuel is comparable
with Sunoco Supreme Blue..
Renegadge Pro 110+ looks like a match but being honest I don't know what all this is..
Pro 110+----------------------------------Supreme
Formula octane 111 -----------------------112
Motor octane 108.5---------------------109
Research octane 113.5---------------------115
Specific gravity 718-----------------------714
Reid Vapor pressure 7.1----------------------6.1

Thanks =;

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 Post Posted: Mon Feb 27, 2012 2:47 pm 
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Barry any time we had a rise in the gravity on the dyno it would run richer you have a little less octane or detonation suppression with the pro 110


Specific gravity 718-----------------------714

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 Post Posted: Mon Feb 27, 2012 3:56 pm 
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The higher density of the renegade fuel will enable the jetting to pass more fuel molecules per time period so one is lead to think that it will run richer however thats not all the story. It depends upon the selection of chemicals contained in the fuel as to what the stoichiometric point is. Note that the Reid vapor pressure is much higher for the Renegade fuel than for the Sonoco. The Reid is a measure of the atmospheric pressure needed to suppress vaporization. Simply put in the context of how it effects your engine, is its a measure of the evaporation rate and the vaporization rate of the lower temperature boiling chemicals of the fuel. The Renegade fuel has a higher Reid so its more volatile and it evaporates faster. The higher number means its got a higher percentage of light hydrocarbons.
The main factor for density is the ratio of carbon to hydrogen. This HC ratio varies per fuel manufacturer. Higher density fuel has more carbon. Carbon is cheap. Hydrogen is expensive. Hydrogen makes the power. So what this adds up to is its going to have a different stoichiometric point than Sonoco. So the jetting is going to be dictated by the stoich point.
To work it out correctly it is necessary to contact a manufacturer and ask the stoichiometric value for the fuel. Then you multiply the stoich by the density and if the number is higher compared to another fuel the mixture will be richer by that percentage of difference.

The Renegade fuel will change the way the engine runs If the engine currently has issues with low manifold vacuum which is the common scenario for race cam engines, it will run better on the Renegade example given.


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 Post Posted: Mon Feb 27, 2012 4:15 pm 
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heres an example for you.
VP C14+ stoichiometric ratio is 10.49:1
VP C25 stoichiometric ratio is 15.05
Sonoco 112 stoichiometric ratio is 14.9

varies a lot doesnt it.


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 Post Posted: Mon Feb 27, 2012 7:01 pm 
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Ok I just emailed Renegade for there stoichiometric value or there 110+ and there 112+..I will post it when I get a reply...Thanks shrinker.. =;

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 Post Posted: Mon Feb 27, 2012 10:42 pm 
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shrinker wrote:
heres an example for you.
VP C14+ stoichiometric ratio is 10.49:1
VP C25 stoichiometric ratio is 15.05
Sonoco 112 stoichiometric ratio is 14.9

varies a lot doesnt it.

VP C14+ stoichiometric ratio is 10.49:1

Is that a typo? that is a LOT different than the others.

Rick


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 Post Posted: Tue Feb 28, 2012 3:30 am 
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thats not a typo


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 Post Posted: Tue Feb 28, 2012 9:09 am 
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The Renegade 110 would very likely replace the Sunoco 112 just fine . And of course the Renegade 112 would be more than a match .

Renegade PRO 112

Formula octane 113
Motor octane 109
Research octane 116
SG/Density .716
RVP 7.2

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Master Dist. for Renegade Racing Fuels
www.renegadepro1.com


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 Post Posted: Thu Mar 01, 2012 8:06 pm 
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Hey Mike maybe you can find out what the stoichiometric value is since I got no response from 2 different e-mails.........




Sent them another E-mail and still no response at all ](*,) ...May be they don't know O:) ..
No response from Mike also... We will try again or maybe give them a call...

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