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 5.4.0) with ESMTP id 5052128 for flyrotary@lancaironline.net; Thu, 14 Jul 2011 19:48:01 -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 14.01.0289.001; Thu, 14 Jul 2011 18:47:08 -0500 From: Chris Barber To: Rotary motors in aircraft Subject: Oil Pressure Again Thread-Topic: Oil Pressure Again Thread-Index: AcxCfqsMBCH9Q+rHSTilBuwhuUL3cA== Date: Thu, 14 Jul 2011 23:46:52 +0000 Message-ID: <2D41F9BF3B5F9842B164AF93214F3D307DC67DBE@FCD-MAIL06.FCDATA.PRIVATE> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [166.139.76.11] Content-Type: multipart/alternative; boundary="_000_2D41F9BF3B5F9842B164AF93214F3D307DC67DBEFCDMAIL06FCDATA_" MIME-Version: 1.0 --_000_2D41F9BF3B5F9842B164AF93214F3D307DC67DBEFCDMAIL06FCDATA_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I hesitate asking about this again, but I am too close to possibly flying t= o drop the ball too much now. I have a drop in oil pressure again. It has= dropped from the high 60's or so to between 20 psi to 40 psi (20 to 30 at = lower RPM and only up to around 40+ as I increase power). My first thought was that it was the front o-ring and silicone ring in the = front cover. So, I pulled the front pan and replaced it. I also was able t= o check the front pressure port and the oil pump chain/key/washer etc and a= ll was good. I am about to have to pull the engine to check the bottom of the engine for= the oil pick up and rear port (after checking the hoses, but I would think= ing a blockage, depending on where it is, would increase pressure). One of= the disadvantages of the Conversion Concepts mount is that I pretty much h= ave to pull the engine to check the bottom end. My question is, other than the mentioned items, what else could cause this = sort of drop. I have hooked up a mechanical pressure gage (instead of the = RWS EM2). My concern is that it may be the front bearing as it was the onl= y part I recall being closer to being out of spec. I hate the idea of havi= ng to tear down the engine again to replace this part especially since the = engine is running all but perfectly and I was doing squawks preparing for m= y DAR inspection before this issue crept up. Also, even though I can't think of a way, is there any way to replace the f= ront stationary gear/bearing without cracking the engine...just had to ask = as I am not really liking the idea of cracking open the engine again, even = though I am getting a bit too good at it....but apparently not well enough = to make it actually work right. As opposed to mucking around with red hearings and wild goose chases, I fig= ured I would just ask again. And yes, I have been reviewing the archives a= lready. TIA Thanks Chris Barber Houston. --_000_2D41F9BF3B5F9842B164AF93214F3D307DC67DBEFCDMAIL06FCDATA_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I hesitate asking about this again, but I am too close to possibly flyin= g to drop the ball too much now. I have a drop in oil pressure again.= It has dropped from the high 60's or so to= between 20 psi to 40 psi (20 to 30 at lower RPM and only up to around 40+ as I increase power).

My first thought was that it was the front o-ring and silicone ring in t= he front cover. So, I pulled the front pan and replaced it. I also wa= s able to check the front pressure port and the oil pump chain/key/washer e= tc and all was good.

I am about to have to pull the engine to check the bottom of the engine = for the oil pick up and rear port (after checking the hoses, but I wou= ld thinking a blockage, depending on where it is, would = increase pressure). One of the disadvantages of the Conversion Concepts mount is that I pretty much have to pull the en= gine to check the bottom end.

My question is, other than the mentioned items, what else could cause th= is sort of drop. I have hooked up a mechanical pre= ssure gage (instead of the RWS EM2 <= a>). My concern is that it may be the front bearing as it was the only part I recall being closer to being out of spec= . I hate the idea of having to tear down the engine again to replace = this part especially since the engine is running all but= perfectly and I was doing squawks preparing for my DAR inspection before this issue crept up.

Also, even though I can't think of a way, is there any way to replace th= e front stationary gear/bearing without cracking the eng= ine...just had to ask as I am not really liking the idea of cracking open t= he engine again, even though I am getting a bit too good at it....but apparently not well enough = to make it actually work right.

As opposed to mucking around with red hearings and wi= ld goose chases, I figured I would just ask again. And yes, I have be= en reviewing the archives already .

TIA

Thanks

Chris Barber

Houston.

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