X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.245] (HELO mail.qnsi.net) by logan.com (CommuniGate Pro SMTP 6.0c1) with ESMTP id 5730392 for flyrotary@lancaironline.net; Mon, 27 Aug 2012 09:32:13 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.245; envelope-from=bhughes@qnsi.net Content-class: urn:content-classes:message Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: RE: [FlyRotary] Re: Oil pressure again Disposition-Notification-To: "Bobby J. Hughes" X-MimeOLE: Produced By Microsoft Exchange V6.5 Date: Mon, 27 Aug 2012 08:31:37 -0500 Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F342F4A5@qnsi-mail.qnsi.net> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Oil pressure again Thread-Index: Ac2EVpWXuob0xQ90Rsecb8cis2RWpgAAUBxQ References: From: "Bobby J. Hughes" To: "Rotary motors in aircraft" Any chance your oil pickup tube is sucking air?=20 Bobby -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle Sent: Monday, August 27, 2012 8:19 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Oil pressure again Chris, I agree, it sounds most likely to be the front cover o-ring. But don't overlook the woodruff key in the oil pump. It is very easy to have this key fall out of place when installing the oil pump pulley. If it falls out it will allow the pulley to slip on the pump shaft resulting in low oil pressure... and eventual engine failure. You can check that it is in place with a piece of safety wire. Mark S. On 8/26/12, Chris Barber wrote: > My oil pressure has dropped again. I am jumping to the conclusion it=20 > is that pesky front cover O-ring. I know I was meticulous with=20 > installing it last time. While it may be something else, I doubt it. I > had the pressure valve fall into the pan a couple of years ago and it is now safety wired in. > Perhaps it is the oil pump but it seems so simple and not prone to failure. > > > So, to make this more than a vent, as I know mostly how to address=20 > this....contrary to the evidence that I am having to screw with it=20 > again, is there any words of wisdom y'all would care to share. Since I > will at least have the front cover off (should be able to do do with=20 > engine on the plane) would this be a good time to replace the oil=20 > pump. It has not been replaced in the past do it is many years old=20 > with an unknown number of miles. Is there a "better" oil pump out=20 > there than the turbo version offered by Mazdatrix that I should ponder? > > I may have the oil ring and plastic retaining ring already if I can=20 > find them. Just gotta find the time to crack into it. Then to=20 > continue my turbo diagnosis. Great power without intercooler (even=20 > though I found no restriction, but it is a super cheap intercooler=20 > from eBay) and blow off valve or even N/A. Obvious limited breathing=20 > with the cheap intercooler and blow off valve > > TIA. > > Chris Barber > Houston > > Sent from my iPhone 4 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html