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Date: Fri, 31 May 2013 09:01:45 -0400
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Subject: Re: [LML] TSIO 550 turbos
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From: Bob Rickard <r.rickard@rcginc-us.com>
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I had the exact same problem.  Turned out to be the pump that is connected t=
o the starter drive that pulls the oil from the turbos.  I found this out af=
ter replumbing the lines, testing the check valve, and replacing both turbos=
 - and still had the problem, which was a major pain.  Allen at Barrett was v=
ery helpful but couldn't believe this pump could be the culprit.  After elim=
inating everything else, it was the only thing left.  Have run the engine 10=
0 hours since then and doesn't leak a drop. =20

Bob R
IV-P

On May 31, 2013, at 7:35 AM, John Barrett <2thman1@gmail.com> wrote:

> I have oil dripping out of turbos in this recently overhauled engine - don=
e by Barrett in Tulsa OK.  Last run was about six minutes to see if electron=
ic ignition is working.  Found a little oil puddled on the Tarmac under each=
 stack and can be seen to eminate from the turbos.  Total time since reinsta=
ll is about 15 minutes, none of it higher than mag check RPM.
>=20
> My question is are the turbo oil return lines plumbed with a check valve? =
 Could a backwards hookup of these produce this result?  I didn't have this p=
roblem with the Performance Engine version that I flew for about 55 hours.
>=20
> Thanks,
> John Barrett
>=20
> Sent from my iPad
>=20
>=20
> --
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