I was in Oklahoma City for the past week and a half and one of the places I visited was the Science Museum of Oklahoma. There is an aircraft engine that was donated to them but there is no information about it and they are seeking assistance in identifying it; manufacturer, type, specs, etc. I've downloaded a shot of the display request and two photos. Here is the information they have:

http://www.airport-data.com/aircraft/photo/303863.html

There is a correction to this information. It is NOT a rotary engine. One of the volunteers there is an 80-year-old aeronautical engineer. He took an endoscope to it and discovered it has pistons with ports but no valves.

http://www.airport-data.com/aircraft/photo/303864.html

http://www.airport-data.com/aircraft/photo/303865.html

If anyone knows anything about this engine let me know, and I have the e-mail and contact for this engineer.

2 months later

Still looking for help identifying this engine. Isn't there anyone out there with any ideas?

Glenn,

I have checked several sources and came up with nothing. The fact that apparently there is no identifying data plate anywhere on it suggests it was a one-off that perhaps never flew. The (what appears to be) multiple belt reduction drive suggests it was probably intended for Experimental aircraft use. Certainly not a type-certificated aircraft engine. I don't see any airflow baffles typical of a working, installed aircraft engine-they normally attached to the engine. Anyone? Prove me wrong.