E85 Unleaded (RACE GAS?)
01-16-2006, 03:13 AM
#1
Rennlist Member
Thread Starter
E85 Unleaded (RACE GAS?)
Anyone try the E85 with ethanol? Is it safe to run with the SC? I found it tonight filling up the wifes car, it's actually cheaper than super unleaded and it's suposed to be 100 to 105 octane 
Last edited by Darien; 01-16-2006 at 02:14 PM.
Trending Topics
01-16-2006, 07:35 PM
#9
Road Warrior
Rennlist Member
Rennlist Member
all octane boosted fuels are not equal... ck this out:
Ethanol is not perfect, however. It produces less energy than raw gas, so its use can result in a 2 to 3 percent reduction in fuel economy. Though ethanol boosts octane, it doesn’t do so as much as the same amount of MTBE (see Demystifying Octane Ratings). Ethanol also raises the gasoline’s volatility. Volatility, or vapor pressure, is the gasoline’s tendency to vaporize. RFG calls for lower volatility because it decreases evaporative emissions — pollution from gasoline in tanks, at filling stations, and so on. Refiners increase their gasoline’s vapor pressure in winter to ensure proper engine starting and operation, and decrease it in summer to prevent emissions as well as vapor lock in a car’s fuel lines. http://www.omegamotors.com/enjoy/gas...soline_08.html
http://www.omegamotors.com/enjoy/gas...soline_08.html has a good series of tests for octane boosting and results on a 10.5:1 motor w/ alumunium heads (kinda like our 928's)...
I've tried a few fuels over the years in race motors and lately in my 11.3:1 shark - trick gas's 101 seems ok at about 40% w/60% 91 octane pump gas - but I get the same results w/ VP 111 octane using only about 15% w/91 pump gas... think it's due to the method of octane boosting (mtbe vs heavier gas based additives)
best way to test for your car is on a dyno though... hope this helps!
Ethanol is not perfect, however. It produces less energy than raw gas, so its use can result in a 2 to 3 percent reduction in fuel economy. Though ethanol boosts octane, it doesn’t do so as much as the same amount of MTBE (see Demystifying Octane Ratings). Ethanol also raises the gasoline’s volatility. Volatility, or vapor pressure, is the gasoline’s tendency to vaporize. RFG calls for lower volatility because it decreases evaporative emissions — pollution from gasoline in tanks, at filling stations, and so on. Refiners increase their gasoline’s vapor pressure in winter to ensure proper engine starting and operation, and decrease it in summer to prevent emissions as well as vapor lock in a car’s fuel lines. http://www.omegamotors.com/enjoy/gas...soline_08.html
http://www.omegamotors.com/enjoy/gas...soline_08.html has a good series of tests for octane boosting and results on a 10.5:1 motor w/ alumunium heads (kinda like our 928's)...
I've tried a few fuels over the years in race motors and lately in my 11.3:1 shark - trick gas's 101 seems ok at about 40% w/60% 91 octane pump gas - but I get the same results w/ VP 111 octane using only about 15% w/91 pump gas... think it's due to the method of octane boosting (mtbe vs heavier gas based additives)
best way to test for your car is on a dyno though... hope this helps!
01-16-2006, 07:51 PM
#10
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
http://www.e85fuel.com/e85101/flexfuelvehicles.php
if one were boarderline passing smog perhaps you could run a tank.?
We actaully have an ethonal plant in my hometown in Minnesota. Kind of cool actually. I grabbed this from the site...personally i prefer the product from step five
http://www.centralmnethanol.com/imag.../Flowchart.htm
also..
if one were boarderline passing smog perhaps you could run a tank.?
The differences in fuel injector size, air-fuel ratio, PCM calibrations, material composition of the fuel lines, pumps and tanks are just a few of the components that contribute to making an E85 conversion extremely complex.
Although your vehicle was not manufactured to run on E85, no problems should occur if you mistakenly fuel once with the alternative fuel. The largest difference between an E85 powered vehicle and a gasoline powered vehicle is that their computer modules are meant to read different amounts of oxygen within the fuel. E85 contains a higher amount of oxygen than gasoline and E85 compatible vehicles are made to read that higher amount. When a higher amount of oxygen is read by a gasoline powered vehicle, your "check engine light" may appear. A number of other parts on the FFV's fuel delivery system are modified to be ethanol-compatible. The fuel tank, fuel lines, fuel injectors, computer system and anti-siphon device have been modified slightly. Alcohol fuels can be more corrosive than gasoline. Therefore; fuel system parts have been upgraded to be ethanol-compatible.
We actaully have an ethonal plant in my hometown in Minnesota. Kind of cool actually. I grabbed this from the site...personally i prefer the product from step five
http://www.centralmnethanol.com/imag.../Flowchart.htm
also..
CMEC produces 200 proof (ethanol) anhydrous alcohol. For every bushel, 56 pounds, of corn that CMEC grinds, 2.72 gallons of ethanol are produced and 15 pounds of Dried Distillers Grains with Solubles. Before the ethanol can be loaded onto trucks for delivery 5% natural gasoline must be added.
Last edited by Tony; 01-16-2006 at 08:11 PM.
