X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 09 Jun 2008 08:10:42 -0400 Message-ID: X-Original-Return-Path: Received: from ironport5.liveoakmail.com ([216.110.12.21] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2958931 for lml@lancaironline.net; Sun, 08 Jun 2008 16:18:11 -0400 Received-SPF: none receiver=logan.com; client-ip=216.110.12.21; envelope-from=walter@advancedpilot.com X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApwBAN/aS0hAMf4ViGdsb2JhbACSBwEBAQ8gmxU Received: from rs5.liveoakhosting.com (HELO secure5.liveoakhosting.com) ([64.49.254.21]) by ironport5.liveoakmail.com with ESMTP; 08 Jun 2008 15:17:32 -0500 Received: (qmail 10800 invoked from network); 8 Jun 2008 15:17:27 -0500 Received: from ip12-197-248-25.networkusa.com (HELO ?10.0.1.2?) (12.197.248.25) by advancedpilot.com with (AES128-SHA encrypted) SMTP; 8 Jun 2008 15:17:27 -0500 X-Original-Message-Id: <5CC45350-9CF5-4780-9252-BEA270416F45@advancedpilot.com> From: Walter Atkinson X-Original-To: "Lancair Mailing List" In-Reply-To: Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v919.2) Subject: Re: [LML] CHT's and cooling mod X-Original-Date: Sun, 8 Jun 2008 15:17:26 -0500 References: X-Mailer: Apple Mail (2.919.2) The problem is not the air coming in. There is more than enough air . From our extensive research, the problem is where it does and doesn't go. Walter On Jun 8, 2008, at 10:18 AM, gerardoconnell@optusnet.com.au wrote: Thanks Guys for all your suggestions regarding lowering the CHT's. I decided to modify the top cowl and have attached a photo. We decided that the main issue was cooling of cylinders 2 & 4 on the left side with 4 being the hottest. The reason was probably the fhe governer blocking airflow and engine air being drawn through the filter. I have had one 20 min test flight and CHT's have dropped from 415 F to 380 F for number 4 in cruise. I will have a 3 hiur flight tomorrow at higher level and see how she goes. Will report back Gerard-- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html