Jim

Many engines designed for glo-alchohol fuel can be converted to diesel with the replacement of the cylinder head with a variable head such as that made by Davis Diesel.

Keep in mind several things:

Compression ignition imposes greater stresses than glo-alchohol..especially on the Conn rod and crank due to the much higer compression ratio needed to operate.

The glo-alchol carburator is designed and jetted for alcohol..this means that the fuel/air ratio of an alcohol mix is about 5:1 or 5 parts air to 1 part alchohol. the fuel/air mix required for a kerosene (or gasoline) engine is about 15/1. All of this depends on temperature and atmospheric pressure, of course.

Your converted engine carb venturi opening will be too large, the needle valve will be too big and coarse and the spray bar jet opening is now too big.

This does not mean that the setup won't work, it just means that the alchohol carb setup is not ideal for a kerosene or gasoline mix. Note the 3:1 difference in the above mix ratios.

With this setup, you will find that rotating barrel on the carb won't need to be fully open for max RPM of the engine. This is OK as the fuel/air kerosene mix needs are now 1/3 that of an alchohol fuel/air mix.

In initial operation find the position of the carb barrel whereby the engine does not increase in RPM as you lean the engine out. Lock this position down as your new open throttle position. You will find that because of the ratios discussed above the engine will now use much less fuel vs alchohol for a given run time, theoretically 1/3 less fuel or 3 times longer time.

When you find the ideal carb and compression settings for the prop you use, the engine will idle lower than before and will transition from idle to full RPM nicely.

Diesels love back pressure, unlike glo. You can actually put a tube extender from the muffler outlet directed all the way through the fuselage exiting after the tail to exhaust all of the stuff. Or, at least an extension from the muffler outlet directed downward away from the plane.

Finally, yep Waldo, they surely do stink and they are sloppy and your Wife won't let you on the furniture and will make you change your clothes after flying. All of them do this and aromatic lamp oil instead of kerosene don't help none. Ya just gotta love the damn things.