Alternative fuels
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Thread: Alternative fuels

  1. #1
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    Display Name: BGREEN

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    Alternative fuels

    Most of the vintage tractors were running on less ethanol in the fuel. With the percentage today being 10 percent or more I'm thinking of a propane conversion. Propane is pretty stable, high octane, doesn't have a spill issue, works at lower temperatures, and keeps well for as long as the bottle is closed.
    Parts and kits are available and reasonable when compared to a new carburetor($150-250) or even a rebuild kit for our carbs($40-80).
    Has anyone converted their tractor to run on propane or any other alternative fuel ?

    I'm hoping to get mine together in the next month for the local vintage tractors and engine show. Weighing options for the short and long run here. Mine runs, but not as well as I'd like. The carb was pretty beat as it had sat for some time. I soaked for a few days, maybe even a whole week to get the junk out and a kit is relatively expensive for these it seems.

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    Display Name: Chuck Van Dusen
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    BGREEN,

    You did not say which tractor here, but backtracking other posts you have made you are likely talking about your 1970 112 in this thread -- is that correct? Yes, Deere has recommended that no fuel of higher than 10 percent alcohol be used in these vintage machines...here is an illustration excerpted from a manual:
    fuel storage info & per cent alcohol allowed - 318.JPG

    There are lots of stations that sell 'dino gas' that is free of any alcohol as most collectable cars need it just like our older tractors do. An on-line list will show where near you it can be purchased.

    Most converted engines running on propane are going to make a bit less power, so I have not seen many conversions -- just a few that are used as tugs and forklifts inside buildings where the exhaust constraints are tipping the fuel choice in favo0r of propane.

    Chuck

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    Display Name: Jeff
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    I'd be interested to see how it is done. Not sure I would do it myself.
    Non ethanol "rec" or "recreational" gasoline is available all over where I live. It is all I run in my tractors.
    I stopped using pump gas in all my small engines years ago after having carb issues with it in a snowmobile. Was having to clean the carbs on it every year after they upped the ethanol percentage in it. Since then I haven't had as many issues. Carbs stay clean longer and less issues starting after they have been sitting for a while.
    73 110 39 deck
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    Display Name: Nate
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    The only problem I see with a propane conversion is the loss of horsepower. IIRC, it’s typically a 30% loss of power. That’s huge on a 10 horse engine.
    1966 60 (Soon to be 12 HP), 1985 111
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    Yes, my 70 HD 112, or any in general. I think the fuel btu issue can be overcome easily with timing, though I haven't seen it as an issue in go kart applications from 5-10hp

    Unless I drive about 40 miles one way to a truck stop near the race track, all the 87-92 pumps are at least 10% here and some are 15%

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    Display Name: David C.Dunbar

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    I wouldn't advise conversion. Been into many engs so done. Special valves, valve seats. pistons and rings are needed. Your said orig items will badly erode in short order. Camshaft timing, compression and ignition curves should be altered also. I've had to linebore some converted 460 Ford trucks that pound out the main brgs and distort the block, receded vales/ seats, melt pistons, etc. Destroyed air cooled VW engs in Zambonis filled my shop years ago. Expect your engine to follow suit. David

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    Quote Originally Posted by BGREEN View Post

    Unless I drive about 40 miles one way to a truck stop near the race track, all the 87-92 pumps are at least 10% here and some are 15%
    Check this site out. They have a phone app that works well too. https://www.pure-gas.org/
    I was surprised to find how many gas stations near me sell it. Many I'd been to before but never realized they sold it.
    73 110 39 deck
    72 112 47 deck
    73 140 H3 48 deck
    37A Blower
    31 Tiller
    33 Tiller
    54 4 way Blade
    80 cart

    https://www.wfmachines.com/forums/sh...10-restoration

  10. #8
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    Display Name: Greg Olson
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    Ethanol is not the only culprit in gas. Most station fuels are 70% at best even if no ethanol added. There are some informative youtube video's if one wants the info. Ethanol is bad for small engines but the other impurities are even worse. Running a bottle of engineered (pure) gas is best if you are going to store your tractor for awhile.
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  11. #9
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    Display Name: DEERE317
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    If you're interested: HERE
    Read online reviews though.
    Was considering for my KT.
    Even if it does break something the engine isn't complicated and those things are like Ford 8N's, everyone has one.
    Maybe engine internals need cleaned up?
    Have Fun!
    1981 John Deere 317 Kohler KT17 Series-II
    John Deere 54, 54" 4 Way Hydro Blade
    1990 John Deere 185 Kawasaki FC540V
    John Deere 42, 42" Blade
    John Deere 110 Square Fender Kohler K241AS
    John Deere #18 Wagon
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    If It Is Making Weird Sounds And Vibrations, It Is Probably In The Process Of Breaking or Is Broken.

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  13. #10
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    Probably should've mentioned, Gen Brand Kohler, Gen Model Not Listed, K241 (or what version you have)
    1981 John Deere 317 Kohler KT17 Series-II
    John Deere 54, 54" 4 Way Hydro Blade
    1990 John Deere 185 Kawasaki FC540V
    John Deere 42, 42" Blade
    John Deere 110 Square Fender Kohler K241AS
    John Deere #18 Wagon
    John Deere 48" Plug Aerator

    If It Is Making Weird Sounds And Vibrations, It Is Probably In The Process Of Breaking or Is Broken.

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