993 turbo inlet and outlet pipes

[993ttim]

Hi all – I have a question regarding the the oil inlet and outlet sizes of 993 tt pipes?

I have a 917 replica kit car running a twin variable-boost GT2 turbochargers on a dry-sumped 3.3 litre 930, dual intercoolers; the car has been in storage for a long time and we ran it briefly once basic recommissioning done. Turbos were sent off for refurbishing and now they are back on, the car smokes like it is on fire on idle, clearing itself after a while when on 3.000 + revs. It did not smoke before but also, was not run too much. It is a longer story here but we think there was a restrictor on the oil inlet that has been lost in transit. Before trial and error to find right restrictor, we want to set the pipes up as per the 993 turbo but cannot find the sizes of these anywhere – I see that it is a pipe that goes into a smaller metal pipe on inlet and similar on outlet (current pipes are large!).

Does anyone know the oil inlet and outlet sizes of 993 tt pipes?