Unkown Engine

[Ghosty]

Hi All,
After info on some castings that was given to me this morning, some have been worked, missing bottom crankcase?, or it could be a flat twin, 2 stroke engine, only one rod, looks like in bronze.
Any one know the engine name would be helpful.
Cheers
Andrew

 

[Jasonb]

Probably a Craftsman opposed twin, see my reply on MEM

 

[raspii]

I've got the plans for that engine, or something suspiciously similar,