X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 07 Jan 2008 00:29:54 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m26.mx.aol.com ([64.12.137.7] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2631529 for lml@lancaironline.net; Fri, 04 Jan 2008 20:51:47 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.7; envelope-from=REHBINC@aol.com Received: from REHBINC@aol.com by imo-m26.mx.aol.com (mail_out_v38_r9.3.) id q.d4e.1d5a0b51 (30737) for ; Fri, 4 Jan 2008 20:50:56 -0500 (EST) From: REHBINC@aol.com X-Original-Message-ID: X-Original-Date: Fri, 4 Jan 2008 20:50:55 EST Subject: Re: [LML] Re: One mag, One electronic ignition X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1199497855" X-Mailer: Unknown sub 34 X-Spam-Flag: NO -------------------------------1199497855 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Colyn, In a message dated 1/4/2008 7:56:36 P.M. Eastern Standard Time, colyncase@earthlink.net writes: - one mag and one electronic. Seems plausible but you lose timing control if you leave the mag on. If I were going to do this I would want to run most of the time with the mag off I think.....and that would mean different timing curves. I don't know if any of the electronic setups deal with that properly or not. Running with the mag off could very well cause bigger problems than it solves. With a single ignition point, the flame has to travel a greater distance across the combustion chamber to complete the burn. This results in part of the fuel charge existing for a longer period of time at elevated temperature and pressure, which may very well yield detonation. Detonation can damage the engine by itself over time or may lead to preignition which will destroy it in short order. Also, from a performance stand point, you want the fuel charge to combust in the shortest time possible. You may recover some power by advancing the ignition some on one plug, but this probably won't return performance to the two plug condition. Rob **************Start the year off right. Easy ways to stay in shape. http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489 -------------------------------1199497855 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Colyn,
 
In a message dated 1/4/2008 7:56:36 P.M. Eastern Standard Time,=20 colyncase@earthlink.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>
- one mag and one electronic.  = Seems=20 plausible but you lose timing control if you leave the mag=20 on.    If I were going to do this I would want to run most=20= of=20 the time with the mag off I think.....and that would mean different timing= =20 curves.    I don't know if any of the electronic setups dea= l=20 with that properly or not.
Running with the mag off could very well cause bigger problems than it=20 solves. With a single ignition point, the flame has to travel a greater dist= ance=20 across the combustion chamber to complete the burn. This results in part of=20= the=20 fuel charge existing for a longer period of time at elevated temperature and= =20 pressure, which may very well yield detonation. Detonation can damage the en= gine=20 by itself over time or  may lead to preignition which will destroy it i= n=20 short order.
 
Also, from a performance stand point, you want the fuel charge to combu= st=20 in the shortest time possible. You may recover some power by advancing the=20 ignition some on one plug, but this probably won't return performance to the= two=20 plug condition.
 
Rob



Start the year of= f right. Easy ways to stay in shape in= the new year.
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