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patkeefe patkeefe is offline
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Join Date: Apr 2004
Location: Bradenton, FL
Posts: 3,184
Steve, this is a chronic problem. Turbo seals are OK, I am sure. This is a sleeve bearing model BW. I will check the pump tomorrow though; good idea. I am a bit limited since I just had elbow surgery a few weeks ago, and I HAVE to take it easy or I'll rip my tendons loose.

I really think the issue is lack of pitch to the drain. Oil comes out of these turbos like foam. They really don't like to drain without pitch, and the more vertical, the better. My test stand has 24" vertical tube from the turbo outlet to it's pump, and has no issues. I'm working on a new catch can at the moment, along with a new crankcase ventilation system.

I'm still trying to find the requirements for oiling flow rate. I think it is around what I have now, so I'm hesitant to restrict the flow much further. My current smallest restriction in the feed line is 3/16", which is AN-3.
Patrick E. Keefe
78 SC
Old 11-20-2014, 04:44 PM
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