X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 22 Jun 2011 10:35:32 -0400 Message-ID: X-Original-Return-Path: Received: from qmta07.emeryville.ca.mail.comcast.net ([76.96.30.64] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5028634 for lml@lancaironline.net; Wed, 22 Jun 2011 08:55:21 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.64; envelope-from=mjrav@comcast.net Received: from omta07.emeryville.ca.mail.comcast.net ([76.96.30.59]) by qmta07.emeryville.ca.mail.comcast.net with comcast id z0rr1g0011GXsucA70ujfF; Wed, 22 Jun 2011 12:54:43 +0000 Received: from mjr ([24.60.90.39]) by omta07.emeryville.ca.mail.comcast.net with comcast id z0up1g00R0qwbqo8U0uqoF; Wed, 22 Jun 2011 12:54:51 +0000 X-Original-Message-ID: <004501cc30db$a7697860$6701a8c0@mjr> From: "Mark Ravinski" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] 360 Dukes Fuel Pump X-Original-Date: Wed, 22 Jun 2011 08:55:23 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.2001 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.2001 Sounds logical to downsize. I've never seen more than 21 GPM on my IO360. As a backup for engine driven pump failure, far less is needed. Pushing excess fuel through the relief valve only wastes power and will shorten the life of the pump too. Mark Ravinski 1520 hrs ----- Original Message ----- From: "Reinath, Michael S. (ARC-AM)" To: Sent: Tuesday, June 21, 2011 2:59 PM Subject: [LML] 360 Dukes Fuel Pump I am going to have my Dukes fuel pump overhauled. The pump I bought from Lancair around 1998 for the fuel injected 360 is a model 1500-00-67. I talked with someone at CJ Aviation about having it overhauled. He said that this model is a large-rotor pump, and that I should consider converting it to a small-rotor pump during the overhaul. It would then probably last longer since it is not bypassing so much fuel while it is running. Anyone have an opinion on this? Is there a good reason to have a large-rotor pump for a Lycoming IO360. The guy at CJ Aviation seemed to think it was oversize for this engine and that the small-rotor pump would be a better match. The data plate on my pump says it flows 30 GPH at 22.5 psi, which does seem a bit high for an IO360, doesn't it? I would appreciate any guidance on this. Mike Reinath LNC2 360 at 1080 hrs San Jose, CA -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html ---------------------------------------------------------------------------- ---- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.901 / Virus Database: 271.1.1/3719 - Release Date: 06/22/11 02:34:00