Hello Veggie,
I would be happy to get Jiang Dong parts if I could find an outlet but I will try whatever else may work. I am striking out in that department totally. I can't find anything. The engine only has 10 minutes on it and I probably put 5 of them on there so I shouldn't need parts right away but I'm one of those "investigate and be prepared" kinda guys.
As to the injection question, the little book says "Single-cylinder, horizontal, water-cooled, four-stroke and pre-combustion chamber". I would take that to mean indirect injection but I'm looking at the diagram next to where it says this and if there is a pre-combustion chamber, it is miniscule. I know my mercedes has precombustion chambers.
Engine loading noted. I was planning to just drive one alternator and though the most I might need out of it is 50A so that is not quite 1HP. I could add another alternator but I'm not sure where I'd use the power. I have an old John Deere Starter/generator that I had though about adding so I wouldn't have to crank. Just hold the little valve open and let the motor get it spinning and release the valve. I might want to add a waterpump for coolant maybe or not I don't know. This is the smallest engine I could find in my pricerange. I would have gotten a smaller one if I could. This is a total science experiment but that's kind of what I do.
I did plan to preheat the oil. I read a post from a guy somewhere that had taken the exhaust from his lister and run it into the bottom of an old natural gas water heater where the flame normally goes and just poured the oil into the water heater tank so the exhaust would heat the oil. I thought that sounded like a logical use of that energy and was going to try something along those lines. I could also put a few turns of copper tubing around a pipe and put the exhauste through that and that would probably be alot smaller. I kinda like the idea of having some quantity of oil up to tempeature.
I will start with biodiesel at first since I have a bunch of that and I already know it works in my car.
That's what is in my thoughts at this point.
Thanks
Brian