I am the first day here as a member. So I do know the habits here and was expecting this question rather in a Private Massage. I am graduated in Business Administration and old Mercedes are my hobby, so I am rather this guy who has ideas and has to pay for it, so sorry if I miss some English words-specific for mechanic engineering, but I take the challenge and explain it. So following work or parts were done by a dedicated Mercedes engines specialist:
Engine disassembled, parts cleaned and measured,
Cylinder drilled and honed bushes installed,
New piston rings,
Crankshaft ground, polished and balanced,
New main and connecting rod bearings,
New chain tensioner,
With new thermostat and new water pump,
Cylinder head completely disassembled, cleaned, measured,
and checked for cracks (pressing bath) Cylinder head,
overhauled with new exhaust and intake valves
new valve guides
hardened valve seat rings for unleaded fuel
All seals new, all bearings new, spark plugs, oil filter, fuel.
The alternator and starter are of course also rebuild.
So this we understand in Germany as restored.
I will also not start at this moment a discussion about the bushes. If I used the correct English word. Few years ago I rebuild in my W111 Coupe the engine unfortunately in the old school way- so with new pistons etc. But if you can implement the bushes- In this case you can use the old pistons and in the future you change only the bushes and do not degrade the engine. Porsche is using this solution.
