X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 30 May 2008 19:05:47 -0400 Message-ID: X-Original-Return-Path: Received: from smtp122.sbc.mail.sp1.yahoo.com ([69.147.64.95] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with SMTP id 2945775 for lml@lancaironline.net; Fri, 30 May 2008 11:25:03 -0400 Received: (qmail 89638 invoked from network); 30 May 2008 15:25:02 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net; h=Received:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=OKUtF3is+pUk7CDUvdWEMhn1pJhDbZet3FakgbsP5QkVXmVpBcOaKSl5PZ5akuJX0czMDxPNYIeIOLojdAx0mPFEZn9MCwJrs1jO9cQuNQTtOlvelTv/gkLsCyxKoBQjWNB/cOFxAh+5y+n8Z57FZ41C5EcfFxNB9RUPhUsc+UI= ; Received: from unknown (HELO Computerroom) (elippse@sbcglobal.net@75.6.3.73 with login) by smtp122.sbc.mail.sp1.yahoo.com with SMTP; 30 May 2008 15:25:01 -0000 X-YMail-OSG: 1ldtVBkVM1l3xuhEEStyWJy2DIn4fgXVxb7oKqF.WntbjFjeoHxiv_z0Eo2ybF2B8sz239vTtLMTWwEVylqI.myRIKrUIQmrdrYd9NtL6MMsmT_QtnFq_gqCkR.ZnfutVp0- X-Yahoo-Newman-Property: ymail-3 X-Original-Message-ID: <000801c8c269$58122d40$4903064b@Computerroom> From: "Paul Lipps" X-Original-To: "Marv Kaye" Subject: Plugs, EI, pre-ignition X-Original-Date: Fri, 30 May 2008 08:25:00 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C8C22E.A75C3020" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C8C22E.A75C3020 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I know of an incident that happened last year with a high-compression, = high-output engine with EI and mags. This plane burned a piston, and = immediately the EI was suspected for multiple sparking. Upon teardown it = was shown that the problem was because the aviation plugs for the mag = were of the wrong heat range and showed damage, whereas the LSE plugs = that were supplied, of the correct heat range, looked normal. The = problems that were first mentioned about engines blowing up with EI = seems to me were due to incorrect timing, too-lean mixture, or wrong = heat-range plugs. These are the normal sources of the damage, most = likely pre-ignition, that caused these problems. Typically when an = engine has problems where both mags and EI are involved, the immediate = reaction is that the EI was at fault. In most cases where a plane = crashed, it was later found that most of the pilots drank coffee in the = preceding 8 hours. Correlation: coffee drinking by pilots is dangerous = because it causes pilots to crash! ------=_NextPart_000_0005_01C8C22E.A75C3020 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
I know of an incident that happened last year = with a=20 high-compression, high-output engine with EI and mags. This plane burned = a=20 piston, and immediately the EI was suspected for multiple sparking. Upon = teardown it was shown that the problem was because the aviation plugs = for the=20 mag were of the wrong heat range and showed damage, whereas the LSE = plugs that=20 were supplied, of the correct heat range, looked normal. The problems = that were=20 first mentioned about engines blowing up with EI seems to me were due to = incorrect timing, too-lean mixture, or wrong heat-range plugs. These are = the=20 normal sources of the damage, most likely pre-ignition, that caused = these=20 problems. Typically when an engine has problems where both mags and EI = are=20 involved, the immediate reaction is that the EI was at fault. In most = cases=20 where a plane crashed, it was later found that most of the pilots drank = coffee=20 in the preceding 8 hours. Correlation: coffee drinking by pilots is = dangerous=20 because it causes pilots to crash!
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