Here is update...
First when I pickup my old engine Im also get very expensive bracelet for my wife:
This they found in oil pan and give me for memory
Im myself open engine to check what parts are still useable and I can sell and what are damaged...
When Im remove head Im found that tamaged piston is piston number 3(from left to right/gearbox side).
And piston
So this piston damage has happen on cylinder 3 which is same cylinder on which in august 2019 injector fail. So it already made damage to that cylinder/piston/rings...
Then there has been
problem with "new" used engine. It looks like that it came from front damaged car and had crack on block where engine support bracket on left/chain side is screwed and on test drive it broken. Crack has been already there when we receive engine but not visible by visual inspection before installing engine. That engine support bracket has been already mounted on engine when we receive it. So on friday engine has been returned and also on friday another low millage(8k miles) 2018.5 CJX engine(1month newer engine that mine) has been shipped from UK ...