I ran across this engine by accident. But it is fascinating in that apparently a business in Utah converted a Zenoa gas engine into a diesel engine.
There is a heater plug unit that appears to be mounted on top of the engine and I assume it runs pump diesel fuel instead of model engine diesel fuel. Or maybe it is setup for biodiesel instead.
It doesn't need the ignition parts etiher but the spark plug is just being used to plug the hole now.
I assume the Walbro carb probably adjusts Ok for diesel fuel without too much effort.
The plate is used to reduce the cooling effect on the fins so the engine stays hot to keep the diesel cycle working.
Does anyone know anything more about it?
Sorry only one pic so far.