X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from hans.bmi.net ([66.97.95.31] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 934671 for flyrotary@lancaironline.net; Fri, 20 Jan 2006 14:37:44 -0500 Received-SPF: none receiver=logan.com; client-ip=66.97.95.31; envelope-from=tphy@bmi.net Received: from localhost (localhost [127.0.0.1]) by hans.bmi.net (Postfix) with ESMTP id 0D51C1C09A8 for ; Fri, 20 Jan 2006 11:36:44 -0800 (PST) Received: from hans.bmi.net ([127.0.0.1]) by localhost (webmail.bmi.net [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 30492-01-3 for ; Fri, 20 Jan 2006 11:36:43 -0800 (PST) Received: from v58zq (geek-184.69-71-160-0.qwest.dsl.vcn.com [69.71.160.184]) by hans.bmi.net (Postfix) with SMTP id 6486F1C0971 for ; Fri, 20 Jan 2006 11:36:43 -0800 (PST) Message-ID: <004201c61df9$c7791020$0200a8c0@domain.actdsltmp> From: "Thomas Phy" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Spark Plug Fouling Date: Fri, 20 Jan 2006 11:43:24 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003F_01C61DB6.B86332C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: amavisd-new at webmail.bmi.net This is a multi-part message in MIME format. ------=_NextPart_000_003F_01C61DB6.B86332C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Any difference with the "plugs up" operators? =20 I believe that most of us understood that leaded gasoline can lead to = spark plug fouling. It turns out even with the "Scavenger" compounds = it apparently will still happened. See article below: I also read one report that address aircraft engine effect. It = basically said that if the CHT is not kept over 350F the scavenger = effectiveness is minimal. So this may be why aircraft sparkplugs do not = seem to foul as often as the auto plugs (higher CHT). ------=_NextPart_000_003F_01C61DB6.B86332C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Any difference with the "plugs up"=20 operators?

I believe that most of us understood that = leaded=20 gasoline can lead to spark plug fouling. It turns out even = with=20 the "Scavenger" compounds it apparently will still happened. See = article=20 below:

I also read one report that address aircraft = engine=20 effect. It basically said that if the CHT is not kept over 350F = the=20 scavenger effectiveness is minimal. So this may be why aircraft=20 sparkplugs do not seem to foul as often as the auto plugs (higher = CHT). =20

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