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Old 11-22-2006, 03:46 AM
pud pud is offline
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can you run a 2 stroke engine on propane?

just curious....
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Old 11-22-2006, 05:18 AM
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Only If you can figure out away to mix oil with it .

No there would be no way to get lube through it and it would just burn up.
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Old 11-22-2006, 10:34 AM
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lol yeah I know that, thanks for reminding me. Now....if I would have thought longer about it, I would have thought of that. lol
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Old 11-22-2006, 11:03 AM
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unless its a 2 stroke diesel motor???

p.s. i have no clue what im talkin about just throwin out a possibility
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Old 11-22-2006, 11:06 AM
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well diesel is lubey (is that a word?) as it is, and you could run propane injection on one Im sure. I was thinking it would be cool to have a propane sled...without even thinking that a 2 stroke engine runs mixed oil lol. Put some diesel injection on a propane engine! hah (that was a joke)
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Old 11-22-2006, 11:16 AM
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Two stroke diesels have a supercharger and oil in the crankcase, like a four stroke, a different animal altogether than a small two stroke gasoline engine.

Jim
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Old 11-22-2006, 11:23 AM
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Ummm. I've never had to pre-mix for any of my old 2 stroke dirt bikes. Oil injection is old tech.



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Old 11-22-2006, 11:29 AM
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Quote:
Originally Posted by jimandmandy
Two stroke diesels have a supercharger and oil in the crankcase, like a four stroke, a different animal altogether than a small two stroke gasoline engine.

Jim
There are small two stroke diesel engines similar to 2 stroke gas engines. Popular in the model airplane category. Thing is, if someone has one, don't just pick up the plane and flip the prop. If there's any oil (Diesel) left in the engine at all, it WILL start. This has happend to several people and if they are lucky, they are able to retain grip on the plane when it starts unexpectedly. Then they just have to hold on till it dies again.
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Old 11-22-2006, 12:28 PM
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I'm certain you could. Probably the place to start would be to try to adapt the fuel system from a propane generator. Oil injection may need some work, as the oil may not mix with propane the same way it does with gasoline.

You would probably get lower performance unless you could raise the compression and experiment with the port timing.
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Old 11-22-2006, 12:32 PM
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probably need a real good regulator to keep from freezing up.
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Old 11-22-2006, 02:09 PM
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Quote:
Originally Posted by petes79f150
Ummm. I've never had to pre-mix for any of my old 2 stroke dirt bikes. Oil injection is old tech.



Pete
I was just about to mention this as well. It's been used on ATV's since the 80's (that I know of....mabey sooner than that).
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Old 11-22-2006, 05:17 PM
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I've got a couple extra two stroke airplane engines sitting around if you guys get any bright ideas for making it work.

And one four stroke, but I don't intend on doing anything with it beyond flying.
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Old 11-24-2006, 01:19 PM
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Yes you can run it,,,,,,,,,,for maybe several minutes before it overheats from friction and burns up.
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Old 11-26-2006, 05:12 PM
Fran6.0fan Fran6.0fan is offline
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depends on whether the crankcase is open or not. large motors with superchargers are closed with the compressor pushing the mixture thru. it doesn't matter what the fuel is. if the crankcase is open, you need to bring lubrication and that would be tough with propane or CNG.
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Old 05-13-2011, 09:30 AM
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Although you have no direct way to mix fuel and oil in a propane system most modern outboard motors have a separate oil and fuel delivery system. It is usually a mechanical pump although vacuum pump or a venture injection could be used. Choosing the correct oil would be a challenge but with the poor storage quality of “modern” gasoline it would appear something worth pursuing.
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Old 05-13-2011, 09:30 AM
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