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Thanks Dave, Finally rang the turbo expert who has advised that if I have a ¾ inch drain (which I do) just let it go. So will plumb it in with AN4 and stand back for the smoke. Regards, Neil. From: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tuesday, August 10, 2021 1:38 PM
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: oil supply turbo Hi Neil, Great question. I never got a lot of great info on how much oil flow I should be feeding to turbo. I take the supply from the oil outlet on the top, spark plug side of the front side housing. I run it through an electrically operated shut-off valve in case the turbo fails in flight. I originally used a #30 hole in a plate of aluminum as a restrictor. Later I decided to omit the restrictor and just rely on the shutoff valve and AN-4 plumbing to provide enough restriction. I have no idea if my system is correct, and I do get quite a bit of oil seepage and mist coming from the area of the turbo, but at least the most recent turbo has about 700 hrs on it. Dave, Oil supply for turbo. Just where did you source the turbo oil supply on the engine? Did you use a restrictor or regulator for the supply. A regulator is about $150 plus fittings and I am inclined to go with that bas the turbo requires 40 PSI, whereas I can range from 120 PSI cold to 80 PSI Hot. Thoughts? Neil.
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