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Steve Tinker · 09-26-2012, 09:44 PM

HS....
That sounds a fair enough assumption.
Did you swap over the two pumps - your posts don't say exactly if you did?
I'm still not convinced that you haven't got a faulty or inefficient scavenge pump in the oil filled head / valve cover. Seeing that Porsche use identical cylinder heads (just reversed), the two scavenge pumps should be identical (can anyone confirm this) and certainly if havn't already, swapping them over at no $$ cost would identify a pumping problem.

09-26-2012, 09:44 PM	#49
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	HS.... That sounds a fair enough assumption. Did you swap over the two pumps - your posts don't say exactly if you did? I'm still not convinced that you haven't got a faulty or inefficient scavenge pump in the oil filled head / valve cover. Seeing that Porsche use identical cylinder heads (just reversed), the two scavenge pumps should be identical (can anyone confirm this) and certainly if havn't already, swapping them over at no $$ cost would identify a pumping problem. __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.