Jerry, do you think the engine shown in these pictures will run OK and reliably if it is assembled as is or does it require a rebore, crankshaft regrind, valve job, etc?
The only picture I've found so far shows a bare block, with very little detail about the condition of the cylinder walls. Are there others posted somewhere? Once an engine is torn down to the point that one is, my advice would be to go ahead with a complete rebuild rather than reassemble it with used parts. If I can get a stuck engine to turn freely with a reasonable amount of effort, and the compression tests fair to good on all cylinders, it's worth a try to get it running and see how well it performs. Once a rehab gets beyond the point of removing the cylinder head and inspecting the condition of the cylinders, there's not much point in reassembling the engine without new parts. If a valve job gets done while the head is off, no problem there. Used piston rings in particular don't take kindly to being removed and replaced, even if they go back into the cylinder they came out of. Connecting rod and main bearings don't seem to have much of a problem with dissassembly/reassembly as long as they're not moved around from one place to another.
The biggest problem with ressurecting an engine after long-term inactivity is deciding when to stop tinkering and do the full rehab. My personal stopping point is usually doing a valve job and replacing easily-accessible gaskets like the oil pan, valve cover, side cover, and maybe front and rear oil seals. Once the pistons, camshaft and/or crankshaft need to be removed, it's full overhaul time.
Jerry
