The key improvements i suggest on N63 are ventilate the engine cover there are six obvious places to cut holes and get a thermal blanket for the turbo hot side. Keep the hot side hot and the cold side cold.
https://bmwrepairguide.com/virtual-l...3%20Engine.pdf
Interesting write up on n63
Both mine and wife's engines would have likely survived if the oil pressure map was 10% higher or at the least, had 5-8 psi higher minimum.
WOT to coasting the oil pressure on N55 will drop from 65 to 22 psi which is crazy! One blob of oil sludge that broke free from a recent oil change and instant spun bearing!
In my case; failure in the CCV system led to boost pressure in crankcase, combined with rapid drop of oil pressure seized my engine in seconds.
Wife's engine had the seal blow out from the OFHG, likely combined with a WOT burst to pass a "fossil driver" and coast causing drop to low 20s psi.
I'm developing a very simple mechanism to boost oil psi. If the n63 controls pressure like n55, it would apply to that motor as well.
I think the oil consumption issue on N63 is largely due to VSS did you do anything to reduce oil consumption in the replacement motor?
–awr–
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