I believe I have a Daiichi Kosho 472 Engine ... but I'm not sure... can anyone confirm? This was acquired with a lot of other parts from a friend of a friend who became too old & sick to build & fly aircraft, or even communicate with others very well... so I can't find out anything about this engine from him. I measured a bore of 58mm and a stroke of 47mm.. which works out to 250cc on a twin cylinder. According to this description: Daiichi Kosho Whisper - Wikipedia, the free encyclopedia and studying a couple of youtube videos, it appears to fit with a DK472 engine. Two cylinder opposed (boxer twin) 2-stroke engine with 250cc displacement. It's very light at only 15.2 pounds w/o exhaust, and supposedly puts out 22 hp... an impressive power-to-weight ratio, if true. But I can't find any detailed info. on this little gem... no manuals, specs, pilot reports, testimonials.. nuthin' ! If it is the DK 472, it was used on the Beat and Whisper PPGs (not Whisper GT), but is now out of production.. DK totally withdrew from the paramotor business several years ago. Supposedly, the DK472 has a good reputation for reliability... relative to other 2-strokes. I was hoping to use it to motorize a SWIFT ultralight glider with direct drive or with prop speed reduction drive. But without knowing more about it, where to get parts, etc.. I'm reluctant to mess with it.