Re: Any tractors slated for E-85?

Posted by ChadS on June 27, 2005 at 06:39:42 from (66.228.96.223):

In Reply to: Re: Any tractors slated for E-85? posted by Don Wadge on June 26, 2005 at 20:51:52:

I dont think youll see much of an advantage usuing it in automotive engines. Belive me, Ive tried! LOL! My Thunderbird will run good on it, but once the rpms go up over 3000rpm, it seems to not like it very well. First, Ethanol is a very hard fuel to ignite, it can be used more as an octane boost, rather than a normal fuel in the auto engines. I belive, that once ethanol reaches a certain rpm, it makes the fuel mixture so hard to ignite, that it will start acting up, cause heat trouble, and maybe lean out the entire engine. My dad, has a 96 Dodge 2500, with a 360, it says in the owners manual, not to use any kind of ethanol fuels in these engines. Id say that it would melt it down, because the computer does not know how to compensate the exhaust gas change, if it runs richer cause the exhaust gasses are cleaner, the O2 sensor tells the computer, that it has a lean condition, then, the computer will richen the fuel, then, the engine will not run correctly, cause, now, it is geting so much fuel, but like I said, its hard to ignite, so it will eventually foul the plugs, because the engine cannot burn it. Thats what happens when you burn it in a high rpm car, or truck engine,,,,,, Now, on the tractors,,, tractors love this stuff!!! Now you may be thinking, well if it dont run in a car, why does it run in a tractor?????One reason,,, tractors, are a low rpm engine, it runs on less ethanol, cause your not trying to run them over 2500 rpm. You have more time, to put an air/fuel charge inthe chamber the piston speed is slower, so you dont have the high rpm problems related with ethanol like described above. You will never, run E-85 straight, you have to cut it back, if you run it straight, its like a 120 motor octane, if you have an engine that is like 100-125 psi of compression at cranking speed, it wont run on pure E85. You have to mix it with pump gas, to put back in the ability to fire the fuel. usually, IH's can run as high as a 75/25 mix, 75%gas and 25% ethanol and run good, and make power. ENGINE COMPRESSION, RPM are the two factors that determine the mixing ratio. If you get the mixture just right, it can make you anywhere from 5-15 hp more at 540. Now, that all may sound difficult to understand,, but it really is quite simple, once you understand how that fuel works, and what it does inside the engine upon combustion. I highly recommend seaching the archives in the "Farmall" forum, and the tractor pulling forum here at YT, and find the compression/fuel mixture chart I once wrote. After you find that, you are ready to make the upgrade changes to make our tractor engine run on E85. This is a very cold fuel to run, it does reduce emmisions, and keeps engine heat down lower, and makes power! feel free to email me, with your tractors specific brand, and compression pressure at cranking speed, I then can tell you how to set it up. Hope this helps,,, ChadS

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