X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m24.mx.aol.com ([64.12.137.5] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1581980 for flyrotary@lancaironline.net; Sun, 19 Nov 2006 10:22:01 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.5; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-m24.mx.aol.com (mail_out_v38_r7.6.) id q.3be.12ef3c87 (40522) for ; Sun, 19 Nov 2006 10:21:37 -0500 (EST) From: Lehanover@aol.com Message-ID: <3be.12ef3c87.3291d081@aol.com> Date: Sun, 19 Nov 2006 10:21:37 EST Subject: Re: [FlyRotary] Re: Spark Plugs To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1163949697" X-Mailer: 9.0 Security Edition for Windows sub 5331 X-Spam-Flag: NO -------------------------------1163949697 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 11/19/2006 9:23:56 A.M. Eastern Standard Time, ceengland@bellsouth.net writes: Back in the bad old days when cars ran leaded gas & transistors were only found in spacecraft, there was an after market plug with construction known as 'surface gap'. The porcelain filled the area between the electrode & thread body. The 'gap' was the distance from the electrode to the thread body. Anyone know whether these plugs are still available? It would seem that if nothing else, it might make cleaning the lead a bit easier. Charlie Mercury outboards used that plug for their CD ignition systems. I have used the Autolite AR2592 in the race engine with good result. Autozone will order them for you (one day) and the cost was $7.00 for 4 plugs. And used to run the Champion N59G in all racing rotaries. Also the Champion N86 for a bit warmer tip. We now use NGK R6725-115 retracted gap, fine wire electrodes, at $28.00 each, and they work great, but if they were not gifted to us we would use the Autolites again. We also run an MSD-6AL on leading and trailing, so fouling is never a problem. Lynn E. Hanover -------------------------------1163949697 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 11/19/2006 9:23:56 A.M. Eastern Standard Time,=20 ceengland@bellsouth.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Back in=20 the bad old days when cars ran leaded gas & transistors were
only=20 found in spacecraft, there was an after market plug with
construction=20 known as 'surface gap'. The porcelain filled the area
between the=20 electrode & thread body. The 'gap' was the distance from the
elect= rode=20 to the thread body.

Anyone know whether these plugs are still=20 available? It would seem that
if nothing else, it might make cleaning=20= the=20 lead a bit easier.

Charlie
Mercury outboards used that plug for their CD ignition systems. I have=20= used=20 the Autolite AR2592 in the race engine with good result. Autozone will order= =20 them for you (one day) and the cost was $7.00 for 4 plugs. And used to run t= he=20 Champion N59G in all racing rotaries. Also the Champion N86 for a bit warmer= =20 tip. We now use NGK R6725-115 retracted gap, fine wire electrodes, at $28.00= =20 each, and they work great, but if they were not gifted to us we would use th= e=20 Autolites again. We also run an MSD-6AL on leading and trailing, so fouling=20= is=20 never a problem.
 
Lynn E. Hanover
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