X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-da02.mx.aol.com ([205.188.105.144] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4488393 for flyrotary@lancaironline.net; Thu, 30 Sep 2010 19:36:04 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.105.144; envelope-from=Lehanover@aol.com Received: from imo-ma02.mx.aol.com (imo-ma02.mx.aol.com [64.12.78.137]) by imr-da02.mx.aol.com (8.14.1/8.14.1) with ESMTP id o8UNZPZK010342 for ; Thu, 30 Sep 2010 19:35:25 -0400 Received: from Lehanover@aol.com by imo-ma02.mx.aol.com (mail_out_v42.9.) id q.e2e.8dbdd35 (34944) for ; Thu, 30 Sep 2010 19:35:20 -0400 (EDT) Received: from magic-m20.mail.aol.com (magic-m20.mail.aol.com [172.20.22.193]) by cia-da05.mx.aol.com (v129.4) with ESMTP id MAILCIADA055-88804ca51eb794; Thu, 30 Sep 2010 19:35:19 -0400 From: Lehanover@aol.com Message-ID: <4efe1.1e80251d.39d678b7@aol.com> Date: Thu, 30 Sep 2010 19:35:19 EDT Subject: Re: [FlyRotary] Re: SPAM-LOW: [FlyRotary] Update: Loss of Oil Pressure To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_4efe1.1e80251d.39d678b7_boundary" X-Mailer: 9.0 Security Edition for Windows sub 5381 X-AOL-IP: 173.88.9.178 X-Spam-Flag:NO X-AOL-SENDER: Lehanover@aol.com --part1_4efe1.1e80251d.39d678b7_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 9/30/2010 3:40:53 P.M. Eastern Daylight Time, msteitle@gmail.com writes: Chris, I think Thomas is referring to the spring/check balls in the crank that block the oil spray into the rotors at low rpm. The purpose of the oil spray is to cool the rotors. To my knowledge, there is nothing that inhibits oil to the bearings, unless you consider the pressure relief valve as doing that, but it only controls high pressure. Mark Over the years Mazda used different schemes to warm oil rapidly. One was a thermal pellet in the font cover that could bypass oil around the oil cooler lines. Later the cooler had a bypass thermostat that allowed oil to bypass the cooler. Later still the crank had a thermal pellet that limited oil flowing to the rotors (Spray nozzles) to speed warm up. In most 13Bs there is a pressure relief in the front cover that opens at 144 pounds to prevent that pesky "O" ring from blowing out on a cold start. This valve dumps over pressured oil into the sump. Had it stuck open, there would be no oil pressure. Can be seen with the pan off. Lynn E. Hanover --part1_4efe1.1e80251d.39d678b7_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 9/30/2010 3:40:53 P.M. Eastern Daylight Time,=20 msteitle@gmail.com writes:
Chris, =20

I think Thomas is referring to the spring/check balls in the crank= that=20 block the oil spray into the rotors at low rpm.  The purpose of the= oil=20 spray is to cool the rotors.  To my knowledge, there is nothing tha= t=20 inhibits oil to the bearings, unless you consider the pressure relief va= lve as=20 doing that, but it only controls high pressure.  

Mark 
Over the years Mazda used different schemes to warm oil rapidly. One= was a=20 thermal pellet in the font cover that could bypass oil around the oil cool= er=20 lines. Later the cooler had a bypass thermostat that allowed oil to bypass= the=20 cooler. Later still the crank had a thermal pellet that limited oil flowin= g to=20 the rotors (Spray nozzles) to speed warm up. In most 13Bs there is a press= ure=20 relief in the front cover that opens at 144 pounds to prevent that pesky= "O"=20 ring from blowing out on a cold start. This valve dumps over pressured oil= into=20 the sump. Had it stuck open, there would be no oil pressure. Can be seen= with=20 the pan off.
 
Lynn E. Hanover
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