X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from host.roblinphoto.com ([72.52.218.78] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTPS id 3813201 for flyrotary@lancaironline.net; Fri, 14 Aug 2009 10:52:30 -0400 Received-SPF: pass receiver=logan.com; client-ip=72.52.218.78; envelope-from=bob@bob-white.com Received: from c-68-35-128-192.hsd1.nm.comcast.net ([68.35.128.192]:40025 helo=quail) by host.roblinphoto.com with esmtpa (Exim 4.69) (envelope-from ) id 1Mby8G-0007q3-S2 for flyrotary@lancaironline.net; Fri, 14 Aug 2009 08:51:53 -0600 Date: Fri, 14 Aug 2009 08:51:49 -0600 From: Bob White To: "Rotary motors in aircraft" Subject: Question about oil cooler plumbing Message-Id: <20090814085149.914a1662.bob@bob-white.com> X-Mailer: Sylpheed 2.6.0 (GTK+ 2.14.4; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - host.roblinphoto.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - bob-white.com I have my oil cooler mounted about 6 or 8 inches above the oil level in the pan. Also, the oil cooler is mounted upside down as compared to an RX-7 installation. The oil input is at the bottom and the output is at the top. I'm concerned that the oil cooler will drain back into the pan when not running. That would mean I would have to pump enough oil to fill the oil cooler before getting oil to the engine at each start. Will the oil drain back through the oil pump? Is this something I should be concerned about? Bob W. -- N93BD - Rotary Powered BD-4 - http://www.bob-white.com 3.8 Hours Total Time and holding Cables for your rotary installation - http://roblinstores.com/