some progress beside what I started on the P90a head..
Pulled the next to last main bearing, very little wear, two tiny scratches (on the bearing the journal looks perfect). the two scratches are hair thin, I am going to leave them be IF test with plastigauge are ok.
Pulled #2 conrod bearing again virtually no wear, and journal looks perfect. This engine looks like a low mileage low oil change or maybe cheap arse oil used. everything on the outside is coked up, the turbo was thrashed but the bearing and the cylinder hone looks low mileage.
I was thinking of removing # 2 piston while the rod bearing was apart to inspect the rings, mainly the oil control rings (the leak down test shows good compression).
This is new territory for me, (never tore into an engine before, I am an electronics guy not a mechanic guy). so each thing i do is new. I was thinking if the oil control rings are gummed up with the same cheap arse burnt up oil, maybe I could dunk the piston in my berrymans parts cleaner can and soak them. Clean off and reoil then reinstall. Thinking on it while waiting on the dumb plastigage, AZ showed in stock at local store but guy could not find it.