Return-Path: Received: from [69.171.36.121] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 4.2) with HTTP id 378581 for lml@lancaironline.net; Wed, 25 Aug 2004 22:15:16 -0400 From: "Marvin Kaye" Subject: Re: [LML] Re: EGT Limits for TSIO 550's To: lml X-Mailer: CommuniGate Pro WebUser Interface v.4.2 Date: Wed, 25 Aug 2004 22:15:16 -0400 Message-ID: In-Reply-To: <009401c48b0e$0e49ff30$b15ad90c@yourxhtr8hvc4p> References: <009401c48b0e$0e49ff30$b15ad90c@yourxhtr8hvc4p> X-Priority: 5 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "cgalley" : Those numbers without qualifiers do not mean much. Are they under standard atmospheric conditions at Sea Level? How far from the exhaust flange is the probe installed? EGT temperatures are very important but seldom are absolute. These relative temperatures are useful in determining power settings for a particular set of atmospheric conditions. They are also useful for checking spark plugs and mag workings. Cylinder head temps on the other hand are closer to being absolute temps and controlling these temps will determine the long term health of the engine. The CHT that Continental lists as red line for their engines will destroy them in short order. Most of the Bonanza people like to keep their CHT at or below 380° F. This is a much more critical temperature. If you are talking about Walter Atkinson, I know he has run the TSIO 550 in a instrumented test cell at Ada. This test cell is better than anything that Continental has. The only reason that GAMI exists is the lack of good operational data from Mobile.