new gtq turbo smoking!

[bird]

had to send my brand new 70gtq back to precision after just 20 min idling time its leaking oil from behind the turbine wheel and smoking badly. maybe wrong clearance issues when it was assembled or just a seal? i am waiting on a diagnosis from precision. some guys claim they have to be run with a restrictor on the feed line but my old 70-p-trim had no issues and no restrictor and it has the updated bearing system. anyone else run into this?
tia

 

[bison]

Ive seen it if there isnt a straight downward shot on the oil return from the turbo to the block. Usually aggravated by aftermarket return hoses that use a threaded hose assembly that returns to the stock hole in the block. It sits to low and doesnt provide adequate drainback. Its more pronounced when the oil is cold and usually clears up when it thins out some.

 

[bird]

i have 5/8 straight hose on a decline going back to the block and i had no issues with my other turbo.