ORIGINAL: w8ye
Ralph converted a lot of none Zenoah engines.
I've a friend with a Ralph converted Sachs 3.2 using the original Makita concrete saw crank case
The engine in the picture has a Zenoah G62 coil. I think there were some versions of the G23 used that coil.
I think Ralph used that coil on some of his non-Zenoah conversions. Its pretty easy to say what that engine isn't but not so easy to say what it is! Cylinder looks a bit like a Sachs of some kind but I'm clueless from there.