Hello all. Here's a strange one. I'm hoping someone can help me identify it. It's about 4" tall, 2 stroke, displacement in the area of .55 cid. There are no makers marks. The crankcase looks like an aluminum home machine job BUT the cylinder and piston/rod/crankshaft combo look professionally produced. It has a rear disk induction. The piston is EXTRMELY heavy (most likely like the Enya meehanite/iron combo). There is one exhaust port (opposite in the picture) and the bypass is actually on the outside of the cylinder (the vertical strip on the outside of the cylinder in the picture). The exposed shaft (left side of picture) is 5/16" in diameter and the other side (right side in the pic) is actually a provision for a needle valve or carb setup. The crankshaft runs in dual ball bearings. The engine overall I would say comes close to 2lbs in weight. It has a glow plug in the head BUT I suspect that originally it might have had a spark plug ignition.

Also, the thread in the glow plug is rather odd because I tried a plug from my Enya .09, Veco .19 and a newer O.S. .25Fp engine and the threads don't fit.

Any help or info on what this engine might be would be appreciated.