Originally Posted by
rbakker
But experience really shows more then all this discussion (saying that on a forum..lol). I would advice you al to make a small machine, it`s very easy to do and makes life easy for break-in an engine.
But i do like to defend my design on a forum...

An interesting approach, but I am curious what you need to do since the oil is incompressible, and a fixed amount in a container.
Is replacing the head button necessary or is removing just the glow plug enough?
What do you do with the crankcase plate, or is the crankcase compression not that significant?
Also, is there much particulate matter in the oil after 1 engine? is the material in suspension or does it settle with gravity(it almost seems like the run-in process is more burnishing than wearing in the surfaces?