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I had the crankshaft checked with a dial indicator and the front flange isn't damaged. I also had the main as well as the rod journals measured and they've never been turned and are still running in standard bearings.
I've been flying this engine since 1983. I have the original logs which mention that it has 2,600 total hours, and 1,560 since major overhaul. I put on the last thousand or so hours. All four cylinders had a compression of 68/80 at the last annual. In 1995 I had two cylinders overhauled by El Reno Aviation which included chroming, valve guides and rocker shaft bushings. I also had new pistons and rings installed in these two jugs There have been just about 500 hours run on the engine since then.
The engine I'm planning to install as a replacement is a dynafocal mount, I'm also offering my conical mount for sale. I also have the original carburetor which has the single piece venturi, but no pictures yet.
Click on the pictures for larger versions.
Engine mount. As you can see there's been a couple of repairs done over the years. The upper one was done before 1983 as I don't know anything about it. The second one is where I've let my mount rubbers get tired and the exhaust stack has rubbed on it.
Not much to show here, just the oil pan.
You can see the wear the rod bearings have in this picture.
To me it looks like minimal wear as the copper hasn't begun to show on the bearings.
The third piston has some scoring along its skirt.
The third piston also appears to be a different casting. You can see the indents aside the wrist pin location as well as an expansion slot just above the rings.
Two of the lifters have rust pitting but not where they were riding on the cam.
They're hard to see in this picture but about half of the lifters still have their part numbers visible on their sides.
The rocker shafts are stained but nothing as far as scratching can be felt using a finger nail. The rockers don't have any unusual wear.
The push rod tubes have some pitting that could use some attention. There are a couple of extra push rods left over from a valve grind done several years ago.
All the gears look good. I'm not sure if it's good or bad, but one of the oil pump gears is aluminum.
The two cilynders on the right have been chromed during their life. The valves in the lower left have a carbon buildup on their seats but no evidence of burning.
You can see the carbon buildup on the seats here. I've made no effort to improve the looks in these cylinders. I don't see any scoring of much concern.
When I first disassembled things I took the parts to the car wash for a hot water hosing. After a few days I noticed some rusting up high in the cylinder. I painted grease on everything soon after that but needed to scotch bright the rust area to see if anything serious happened in there. The rust that happened looks to be minimal, mostly just staining.
This is what inside one of the chromed cylinders looks like.
When I was still planning to reuse this engine I'd started the cleanup by blasting and epoxy priming some of the parts. The paint is a two part catalyzed urethane.
I don't know why I have two pictures of about the same shot here.
The crankshaft has some slight scoring, mostly on the middle main bearing. I've been told a touchup with some super fine sandpaper would cure it. I haven't done anything like that to improve the appearance. As mentioned elsewhere, the crank flange runs true as measured with a dial indicator, and the journals measure as standard, not egg shaped or ever turned.
I'm sorry this picture didn't turn out a little better, but there's really not much to notice anyway. If need be I can take some more to share.
Most of the ugliness you see here is the grease I painted on everything when I stopped planning on using this engine.
Different views.
Different views.
You can see the only apparent problem on the cam in this picture. There is some rust pitting on the second lobe. I've been told this probably happened years ago because on inactivity.
Sorry about the bluriness of this picture. I can try to take better pictures of some of this stuff if asked.
Different view.
All the case parts have no apparent damage.
This is a picture of the two front main bearings.
Another rather poor picture.
This picture is of the middle and rear crankshaft bearings.
Tils is looking from rear to front.