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John Deere Model G, s/n55272

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jon

08-11-2004 14:45:55




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Is this a "gas" or "diesel" model. The specs state that it runs on "Dist.", I would assume this means distillate (whatever that means). It does have two sparkplugs screwed into the head however they might be utilized for preheating the cylinders rather than for spark. HELP and Thanks!!




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JMS/MN

08-11-2004 15:32:58




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 Re: John Deere Model G, s/n55272 in reply to jon, 08-11-2004 14:45:55  
The first diesel tractor from JD was the Model R, 1949. Diesel engines run with injectors, not spark plugs. Distillate is a low-grade fuel, like kerosene. Was used decades ago because it was cheap, and provided enough power to do typical jobs. Older tractors often started on gasoline, were switched over to distillate. Lowered operating costs. Look for two fuel tanks on older tractors, and a different manifold. Small tank was for the starting gasoline, main tank was used for distillate.

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jon

08-11-2004 16:08:30




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 Re: John Deere Model G, s/n55272 in reply to JMS/MN, 08-11-2004 15:32:58  
Is there any (reasonable) way to switch the engine out for a diesel. The tractor was probably produced in about 1952.



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buickanddeere

08-11-2004 16:29:59




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 Re: John Deere Model G, s/n55272 in reply to jon, 08-11-2004 16:08:30  
It"s a 1951. It will run on diesel, better if it"s winter #1 diesel. Coolant temps will have to be kept at 210F.Fuel efficiency will be poorer than a true compression ignition engine. The idea of these old two cyinder all-fuels was to plough all day, cheap with the junk fuel the refineries had little market for. In fact if the stuff will pour and burn, that old Deere will run on it. Even drippings from gas wells and very light crude oil has been used. How did you come across it and what tasks did you have in mind for it? If equiped with a cold gasoline manifold, high compression pistons, timing adjusted, the carb float level adjusted and fuel metering leaned. They will do a fair amount of "odd jobs" for the gasoline burned.

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jon

08-11-2004 16:47:36




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 Re: John Deere Model G, s/n55272 in reply to buickanddeere, 08-11-2004 16:29:59  
The Model G, Johm Deere is sitting in a field about 20 miles from here along with some other "junk". It does not appear to be in too bad of a condition (low rust, etc.) So despite the presence of two sparkplugs it will still run on plain old diesel ??



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matthew h

08-11-2004 19:03:15




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 Re: John Deere Model G, s/n55272 in reply to jon, 08-11-2004 16:47:36  
I cannot add anything much beyond what buickanddeere has already said. I had an all fuel until someone who wanted it worse than I did made an offer. Yes it will use diesel fuel as an energy source but it needs those spark plugs as it is not a compression ignition engine.
If you use it a bunch you might want to shop around for the cheapest fuel you can put in it. If you use it the way I did to do odd jobs that needed a heavy tractor you might just find that although it will burn diesel it is just easier and it runs just as good as if not better on gasoline. Don"t let anyone tell you that you will lose horsepower with gasoline, you won"t find it to be so. Options to run other fuels was for economy and necessity.
If you want a true diesel in a 2 cylinder JD all-purpose or row crop configuration I think you will have to look for a 70D, 720D, or 730D.

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buickanddeere

08-11-2004 18:58:24




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 Re: John Deere Model G, s/n55272 in reply to jon, 08-11-2004 16:47:36  
You really like the idea of running on diesel rather than kerosene/Jet A or gasoline? Winter #1 diesel operates far better than the heavier #2 summer fuel oil. The engine has to be kept very hot, hot plugs, heavy continous work and drain the engine oil more often on diesel. The very low 4.15 to 1 compression ratio, heated intake manifold and combustion chamber swirl from a huge "eyebrow" cast into the combustion chamber. Allows these spark ignition engines to warm up on gasoline and then switch over to "fuel". Much fewer head aches to just run her on gasoline for use as an odd jobs tractor during the busy season. The previously mentioned pistons,manifold & tuning will help. However at full power ploughing, she will lick up about 4 gallons per hour on gasoline making either 38 or 50 HP. That"s stock and converted to gasoline ratings. If the price is right and she"s intact, those old G"s are collectable. Would be a crime if she was cut up for scrap steel to China.

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