I was browsing the Model Engineering News website, and a guy named Malcolm Beak modified the designs to a 4-stroke ETW Kiwi. He dropped the displacement, beefed up the engine, and I think I increased the compression substantially. Guess what? After warming it up with a 5% ether, 95% kerosene start, it'll run on 100% kerosene! Is that cool or what?! Now, I don't know much about diesels, but couldn't you just use a large glow plug to warm up the engine before starting, and rely on that instead of the ether? Would that hurt the compression ignition? Anyway besides my own curiousity, the owner of the "M.E.N." website seems really happy about the potential this could bring.

link:
[link=http://modelenginenews.org/gallery/p8.html#noether]Etherless Diesel?[/link]