>
> Aside from a compression test, measuring end play, (and of course
> installing and running!) are there ways to tell if there's anything
> totally wrong with a given 2.0 air cooled engine? (like spun bearing
> etc.)

A leak down test is superior to a compression test, and easy to do with
the engine out. Of course it cannot find bad bearings or excessive end
play, but it will tell you a lot about each cylinder.