Return-Path: Received: from rtp-iport-1.cisco.com ([64.102.122.148] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 622905 for flyrotary@lancaironline.net; Wed, 26 Jan 2005 09:42:27 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.102.122.148; envelope-from=echristl@cisco.com Received: from rtp-core-2.cisco.com (64.102.124.13) by rtp-iport-1.cisco.com with ESMTP; 26 Jan 2005 09:50:42 -0500 X-BrightmailFiltered: true X-Brightmail-Tracker: AAAAAA== Received: from [172.18.179.151] (echristl-linux.cisco.com [172.18.179.151]) by rtp-core-2.cisco.com (8.12.10/8.12.6) with ESMTP id j0QEfqoA013145 for ; Wed, 26 Jan 2005 09:41:52 -0500 (EST) Message-ID: <41F7AC32.2030403@cisco.com> Date: Wed, 26 Jan 2005 09:41:54 -0500 From: Ernest Christley User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040929 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: FW: Re: Plugs and Mags References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Jim Sower wrote: > Almost certainly not. So how about, at least on the shrouded plug, > select a much hotter plug and see if it will burn off. From inside > that shroud I would seriously doubt it could cause anything like > detonation. Would a propane torch be hot enough to burn off the > deposits on the ceramic, or would you really need an oxifuel torch? > There HAS to be a way ... Jim S. > I would think the oxifuel would be necessary not so much for the heat, but for the oxygen. You want the excess oxygen to react with the lead/carbor and carry it away. BTW, if you do attempt this method, make sure you stay upwind. You don't want to be breathing any lead oxides. We have enough half-... on here already.