X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.129.170.194] (HELO VIRCOM1.fcdata.private) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTP id 5113704 for flyrotary@lancaironline.net; Sun, 04 Sep 2011 21:00:10 -0400 Received-SPF: none receiver=logan.com; client-ip=64.129.170.194; envelope-from=cbarber@texasattorney.net Received: from FCD-MAIL06.FCDATA.PRIVATE ([fe80::697f:d6aa:b87:78d8]) by FCD-MAIL05.FCDATA.PRIVATE ([fe80::809d:a06e:5913:452e%13]) with mapi id 14.01.0323.003; Sun, 4 Sep 2011 19:59:27 -0500 From: Chris Barber To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Update - oil pressure. Thread-Topic: [FlyRotary] Re: Update - oil pressure. Thread-Index: AQHMaptKPX0EIWS+FEKQKTt3J5hDIZU9+OuS Date: Mon, 5 Sep 2011 00:59:29 +0000 Message-ID: <0DEEC75D-9B26-442C-A8AC-1A5B37DB0349@texasattorney.net> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: multipart/alternative; boundary="_000_0DEEC75D9B26442CA8AC1A5B37DB0349texasattorneynet_" MIME-Version: 1.0 --_000_0DEEC75D9B26442CA8AC1A5B37DB0349texasattorneynet_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Seems that when you have spec oil pressure you oil cooling improves. My oil= temps seem to have dropped about 20 degrees. Go figure ;-) Chris Sent from my iPhone 4 On Sep 3, 2011, at 7:40 PM, "Chris Barber" > wrote: Thanks. Yes. I did verify the end play. Thanks for the reminder tho... Chris Sent from my iPhone 4 On Sep 3, 2011, at 7:25 PM, "Mark Steitle" <mste= itle@gmail.com> wrote: Chris, Thanks for providing the group with a status report. I, for one, have been= wondering how you were progressing on your semi-rebuild. I was wondering = what you might find to account for the low oil pressure (don't know why I d= idn't think of the front cover o-ring). Good find on that! It all makes s= ense now, damaged thrust bearings, low oil pressure, etc. One caveat; with= the new thrust bearings, be sure to re-check your eccentric end-play. The weather is about to start cooling off (yes, its got to happen sooner or= later), so test runs, ground runs, etc. should be easier on all the system= s. Keep us posted on your progress. Mark S. On Sat, Sep 3, 2011 at 5:52 PM, Chris Barber <cbarber@texasattorney.net> wrote: To recap, I had lower oil pressure than I felt comfortable with even though= the engine was running strong. I tried to check/replace the pesky front h= ousing o-ring while in the plane to bad resutls. Apparantly what happened is that when I tried to replace the o-ring, the ro= ller bearing slipped off its little lip and got a little chewed up in the m= inute or two I ran the engine to see if oil pressure was up. Since pressur= e was not up, I decided to remove then engine and have a closer look. When= I did I found the bearing. So, I tore down most the engine and had a clos= er look. While apart I also replaced the front main bearing which was ques= tionable and as y'all may recall, it was bad. Upon closer inspection I determined that my front housing was the later typ= e that also needed the little plastic (silicone) o-ring support. No, not r= eally sure how I missed this as I was aware of the change but only had the = o-ring installed I have not been out at the hangar much this month (too many single women re= lying on me ;-)), however, I was able to flush the parts/system, replace th= e front bearing, both front roller bearings and o-ring and support ring (ev= erything else looks really good) got it all together...again.... added fres= h oil and filter and last night cranked her up. She fired right up (gee, a= fter several times doing this I am starting to get everything lined up and = timed pretty well). Low and behold the oil pressure is the highest I have ever seen on my engin= e. That makes sense since I was apparently forcing oil past the unsupporte= d o-ring. I did not go WOT, but only to about 5000 rpm, I think, and I wa= s getting to the high 80's PSI on a mechanical gage. Finally. Ok, tomorrow starts my weekend so now hopefully to button everything back u= p properly and maybe actually make some progress. Chris Houston EFD Velocity N17010 13b turbo with Tracy's stuff --_000_0DEEC75D9B26442CA8AC1A5B37DB0349texasattorneynet_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Seems that when you have spec oil pressure you oil cooling improves. M= y oil temps seem to have dropped about 20 degrees. Go figure ;-)

Chris

Sent from my iPhone 4

On Sep 3, 2011, at 7:40 PM, "Chris Barber" <cbarber@texasattorney.net> wrote:

Thanks. 

Yes. I did verify the end play. Thanks for the reminder tho...

Chris

Sent from my iPhone 4

On Sep 3, 2011, at 7:25 PM, "Mark Steitle" <msteitle@gmai= l.com> wrote:

Chris, 

Thanks for providing the group with a status report.  I, for one,= have been wondering how you were progressing on your semi-rebuild.  I= was wondering what you might find to account for the low oil pressure (don= 't know why I didn't think of the front cover o-ring).  Good find on that!  It all makes sense now, damaged th= rust bearings, low oil pressure, etc.  One caveat; with the new thrust= bearings, be sure to re-check your eccentric end-play. 

The weather is about to start cooling off (yes, its got to happen soon= er or later), so test runs, ground runs, etc. should be easier on all the s= ystems.  Keep us posted on your progress.

Mark S.

On Sat, Sep 3, 2011 at 5:52 PM, Chris Barber <cba= rber@texasattorney.net> wrote:

To recap, I had lower oil pressure than I felt comfortable with even tho= ugh the engine was running strong.  I tried to check/replace the pesky= front housing o-ring while in the plane to bad resutls.

 

Apparantly what happened is that when I tried = to replace the o-ring, the roller bearing slipped off its little lip and go= t a little chewed up in the minute or two I ran the engine to see if oil pr= essure was up.  Since pressure was not up, I decided to remove then engine and have a closer look.  When I d= id I found the bearing.  So, I tore down most the engine and had a clo= ser look.  While apart I also replaced the front main bearing which wa= s questionable and as y'all may recall, it was bad. 

 

Upon closer inspection I determined that my front housing was the later = type that also needed the little plastic (silicone) o-ring support.&= nbsp; No, not really sure how I missed this as I was aware of the change bu= t only had the o-ring installed

 

I have not been out at the hangar much this month (too many single women= relying on me ;-)), however, I was able to flush the parts/system, replace= the front bearing, both front roller bearings and o-ring and support ring = (everything else looks really good) got it all together...again.... added fresh oil and filter and last n= ight cranked her up.  She fired right up (gee, after several times doi= ng this I am starting to get everything lined up and timed pret= ty well). 

 

Low and behold the oil pressure is the highest I have ever s= een on my engine.  That makes sense since I was apparently forcing oil past the unsupported o-ring.  I did not go WO= T, but only to about 5000 rpm, I think,  and I was getting to the high 80's PSI on = a mechanical gage.  Finally.

 

Ok, tomorrow starts my weekend so now hopefully to button everythin= g back up properly and maybe actually make some progress.

 

Chris

Houston EFD

Velocity N17010

13b turbo with Tracy's stuff


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