Return-Path: Received: from [65.173.216.66] (account ) by logan.com (CommuniGate Pro WebUser 4.1b7) with HTTP id 2403822 for lml@lancaironline.net; Thu, 05 Jun 2003 13:03:47 -0400 From: "Marvin Kaye" Subject: Re: Lean of Peak To: lml X-Mailer: CommuniGate Pro WebUser Interface v.4.1b7 Date: Thu, 05 Jun 2003 13:03:47 -0400 Message-ID: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "John Perry" : To add to the mix of opinion of lean of peak operations on a TSIO 550, the A36 that my partners and I fly has a Tornado Alley turbonormalizer with GAMI injectors and a JPI monitor. We bought the plane at 509 hours, at which time a major engine overhaul had been completed by the previous owner, which included the installation of Millenium cylinders. The plane now has 1490 hours. We change oil every 25 hours and get an oil analysis every time. The reports have come back clean to date. There has been no burning of the valves. The plane is flown by the Tornado Alley instructions by the numbers: WOT (wide open throttle) @ 32? MP, 2500 RPM and cruise at 16-17 GPH. Peak on the engine is 1605° F and it is flown at 1520° F equaling 85° LOP. The only anomaly set we have experienced so far is the need to replace the plugs every annual and the need to replace points every 250 hours. We think that there is a greater than expected strain on the magneto-capacitor-wiring harness-plug group caused by the LOP approach, but do not have an explanation as to why this is so. John Perry