X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 06 Sep 2007 20:12:41 -0400 Message-ID: X-Original-Return-Path: Received: from ms-smtp-02.texas.rr.com ([24.93.47.41] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2316170 for lml@lancaironline.net; Thu, 06 Sep 2007 18:51:14 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.93.47.41; envelope-from=toucan@Satx.rr.com Received: from [127.0.0.1] (cpe-70-120-89-184.satx.res.rr.com [70.120.89.184]) by ms-smtp-02.texas.rr.com (8.13.6/8.13.6) with ESMTP id l86MoAN2017895 for ; Thu, 6 Sep 2007 17:50:14 -0500 (CDT) X-Original-Message-ID: <46E08420.2020406@Satx.rr.com> X-Original-Date: Thu, 06 Sep 2007 17:50:08 -0500 From: Jim Cameron User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: High oil pressure Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Symantec AntiVirus Scan Engine Got a mystery, and looking for any advice: My oil pressure is persistently in the 69 - 70 psi range in cruise, over 80 on takeoff with full power. I've removed, disassembled, cleaned and examined the oil pressure regulator assembly on the back of the oil pump. At the moment I have the adjusting screw backed out as far as it will go (usefully), and still am having these high oil pressures. I even scavenged a spring from another engine to compare the spring tension, which seemed about the same from one to the other. I'm really scratching my head. Any ideas how to get this down? Also, would running with these oil pressures actually present a problem, or cause long-term damage? TCM recommends 30 - 60 in cruise, but state a 100 psi upper limit. Jim Cameron Legacy N132X