Return-Path: Received: from fed1rmmtao12.cox.net ([68.230.241.27] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 592987 for flyrotary@lancaironline.net; Wed, 05 Jan 2005 23:45:04 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.27; envelope-from=daveleonard@cox.net Received: from davidandanne ([68.111.224.107]) by fed1rmmtao12.cox.net (InterMail vM.6.01.04.00 201-2131-117-20041022) with SMTP id <20050106044433.OUAB1664.fed1rmmtao12.cox.net@davidandanne> for ; Wed, 5 Jan 2005 23:44:33 -0500 From: "DaveLeonard" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Acceptable oil pressure Date: Wed, 5 Jan 2005 20:46:41 -0800 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0052_01C4F367.A8C74830" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0052_01C4F367.A8C74830 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit MessageI agree with Rusty. In my experience with a turbo and the psru I still see 50 psi at idle and 70 psi at all other times, even when hot. And Rusty is also right, make sure it is not the sensor before you remove that front cover to check the oil o-ring. Dave Leonard Start-up at 70F ambient gets me 80 - 85PSI. Once the oil gets hot I'm seeing about 15 or so at idle, 25 PSI at 2000 rpm, 45 PSI at 3500 rpm, and maybe 60 PSI at 4000. Talking about today with Tracy he felt it was marginal, and was wondering if this might be normal with a combination of a turbo and a redrive both taking pressure. You have an FD engine right? I would assume you also have the stock FD regulator. You have a redrive that takes extra oil, however you only have one turbo, rather than two as the FD's do, so I'm thinking that makes you even. Here's the direct info from the FD manual. Sounds like your pressure is a little low. -Start the engine and let it warm up to operating temperature. - run the engine at 3,000 rpm, and not the gauge reading. - Oil pressure: 50 psi min. You aren't using the stock Mazda oil pressure sender are you? Those are odd units, and are known to be crap. If you're trying to use one of those, stop right now and get a decent sender. Good luck, Rusty (can't wait to see what's inside the smoker) ------=_NextPart_000_0052_01C4F367.A8C74830 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
I=20 agree with Rusty.  In my experience with a turbo and the psru I = still see=20 50 psi at idle and 70 psi at all other times, even when hot.  And = Rusty is=20 also right, make sure it is not the sensor before you remove that front = cover to=20 check the oil o-ring.
 
Dave=20 Leonard
 
Start-up at 70F ambient = gets me 80 -=20 85PSI.  Once the oil gets hot I'm seeing about 15 or so at idle, = 25 PSI=20 at 2000 rpm, 45 PSI at 3500 rpm, and maybe 60 PSI at = 4000.  Talking=20 about today with Tracy he felt it was marginal, and was wondering if = this=20 might be normal with a combination of a turbo and a redrive both = taking=20 pressure.   
 
You have an FD engine right?  = I would=20 assume you also have the stock FD regulator.  You have a = redrive=20 that takes extra oil, however you only have one turbo, rather than two = as=20 the FD's do, so I'm thinking that makes you even.  Here's = the direct=20 info from the FD manual.  Sounds like your pressure = is  a little low.   
 
-Start the engine and let it warm up to = operating=20 temperature. 
- run the engine at 3,000 rpm, and = not the gauge=20 reading. 
- Oil pressure: 50 psi=20 min.
 
You aren't = using the stock=20 Mazda oil pressure sender are you?  Those are odd units, and are=20 known to be crap.  If you're trying to use one of those, = stop right=20 now and get a decent=20 = sender.    =
 
Good=20 luck,
Rusty (can't = wait to see=20 what's inside the=20 smoker)
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