X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 26 Nov 2011 18:12:26 -0500 Message-ID: X-Original-Return-Path: Received: from smtp134.dfw.emailsrvr.com ([67.192.241.134] verified) by logan.com (CommuniGate Pro SMTP 5.4.2) with ESMTPS id 5215271 for lml@lancaironline.net; Sat, 26 Nov 2011 11:35:29 -0500 Received-SPF: none receiver=logan.com; client-ip=67.192.241.134; envelope-from=walter@advancedpilot.com Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp23.relay.dfw1a.emailsrvr.com (SMTP Server) with ESMTP id A75AE2F8433 for ; Sat, 26 Nov 2011 11:34:52 -0500 (EST) X-Virus-Scanned: OK Received: by smtp23.relay.dfw1a.emailsrvr.com (Authenticated sender: walter-AT-advancedpilot.com) with ESMTPSA id 7CDF82F842E for ; Sat, 26 Nov 2011 11:34:52 -0500 (EST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1084) Subject: Re: [LML] Re: Piston upgrade to 10:1 From: Walter Atkinson In-Reply-To: X-Original-Date: Sat, 26 Nov 2011 09:34:51 -0700 Content-Transfer-Encoding: quoted-printable X-Original-Message-Id: <5F7F22E0-8325-4032-AF11-7BBC501A66D8@advancedpilot.com> References: X-Original-To: "Lancair Mailing List" X-Mailer: Apple Mail (2.1084) Danny: **But, the engine will run fine without a change and produce more power = with nothing but the higher compression pistons.** This si not true. It is possible that the engine might actually = produce less power, depending on where the thetaPP falls. In most = cases, it is necessary to retard the timing with the higher CR pistons = to keep peak pressures under control. Walter Atkinson (225) 939-7508