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Jim2 Jim2 is offline
7.0:1 > 11.3:1
Join Date: Oct 2003
Location: Calgary
Posts: 1,864
Sorry to work-I, this thread is going way off topic.

I'd like to assist and clerify that, on my 79 930 both the oil discharged from the turbo scavenge pump and the engine scavenge pump are filtered prior to dumping into the oil reservoir.

The fender cooler/T-stat loop is spliced prior to filtering. The fittings on my reservoir which receive the discharge from both scavenge pumps are internally routed to the filter perimeter, then discharged into the reservoir from the center of the filter. I had stuck a bore scope into my reservoir and the inside is a work of art. Porsche!

With my old turbo I'd see coke (burnt turbo oil) granules in my filter media.

It would be my guess that the filter screen in the turbo sump would protect the scavenge pump assembly, unless Porsche elected to no longer filter the turbo scavenge pump oil with the engine filter.
Old 10-10-2007, 09:14 PM
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