Hi Dale, Talk about dredging a thread up from a long way back. Hope you are still here.

I picked up a Byron Corsair today that was never finished. It has a 4.2 with the Purr Power system and a 3 blade prop. I was pretty disappointed when a friend told me that it used an A&M 4.2. I'm very leery of anything that A&M made. After getting it home I took a look at an old A&M 4.2 that I had in my junk box and noticed that the engine doesn't look like it at all. I'm excited to find that it may be a Precision Eagle. Here are a few photos and I would like to confirm that it is a Precision Eagle. I hope C&H can still provide a single bolt prop adapter. The engine looks like it has only been run briefly because the piston top is nearly clean.