the V2 Part has a check valve, so i believe the cone (come on, its not really a cyclone) is for bringing back the main crankcase oil dust from the head back to the crankcase.
or was the original film can part with checkvalve and it was useless? don't remember.
I'm, and they i think, have not fully understood what they are doing here.
and wtf is part 14-16 for?