B6_Dolphin
Thread starter
Agreed with everything said above, but as a customer, I wasn't about to question their rationale for changing the engine, too.It is very likely that the intercoolers stopped any debris from entering the engine. Make sure to carefully clean them out.
I'm of the belief that the aluminum compressor "dust" won't hurt a thing, and the engine can easily be inspected for damage with a borescope, compression check and UOA.
Independent of turbo failures, the only reason VR30 engine is failing in the 2016+ Q50s & Q60s, aside from oil-related failures due to customer neglect, is due to instances of porous blocks, which has been traced to a manufacturing issue with the block itself. Although in 6 years I've never experienced any form of coolant loss, maybe this block S/N was in the affected population, and Infiniti was "killing two birds with one stone", but that's just conjecture on my part.