So I finally got the fan off thanks to Brad suggesting my access and leverage could be better with blades off. Duh. I didn't know you could take them off from the front.
Not very pretty but it's all being replaced...
Genuine BMW composite water pump, no axial play but you can never tell with these things.
And boy I tell you want, it's a PITA with the "large" radiator that they chose to wind two hoses through the fan cowl. Even though I was replacing all of the hoses it's a massive challenge getting the hoses, clamps, cowl and expansion tank all in at the same time. Hint: assemble expansion tank, both tank hoses and cowl together as one then install after radiator into car, finally attach tank hoses to radiator overflow and engine block (remove airbox).
But I still can't flush it because the damn threads on the temp sensor socket need to be chased, I can't screw the sensor in. Threads themselves look fine but there's a bit of a lip at the front that prevents engagement.
So it's mostly reassembled and if I get time between chores and Bathurst tomorrow I'll finish it and flush. Otherwise Monday which I've taken off to recover from Bathurst, Japanese F1 and UFC 204 tomorrow (13+ hours of sport).