The engine arrived today and I cleaned it up a bit. It's in very good condition internally. There is no visible wear on the rod bushings. The piston was just starting to get that light golden varnish, but there was no black carbon anywhere, even up inside the piston. I have learned that one sure sign of an engine that has been run lean and hard is egging of the top rod bushing with black residue. The bearings are not rusty, but rougher than I trust so I'll get a new set from RC Bearings. The crank looks almost new. The best news, IMO, is that it's the Dykes ring version, not ABC. I know you can get a few hundred more rpm out of ABC engines, but I don't even want to think what Webra sells a new piston/liner set for. Frank Bowman has the ring in stock for $14 shipped. Scuff up the sleeve, put in a ring, and you've got many more gallons of use. The only part that looks bad is the head. I might see if a friend who anodizes engine parts can restore its appearance. The rest of the external parts look great.

I haven't bought a header yet because I'm not sure what plane I want to build for this. So, it will be a while before I run it.

David