X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao101.cox.net ([68.230.241.45] verified) by logan.com (CommuniGate Pro SMTP 5.2.5) with ESMTP id 3031871 for flyrotary@lancaironline.net; Fri, 18 Jul 2008 11:09:23 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.45; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao101.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20080718150843.TDWU6175.fed1rmmtao101.cox.net@fed1rmimpo02.cox.net> for ; Fri, 18 Jul 2008 11:08:43 -0400 Received: from BigAl ([72.192.137.74]) by fed1rmimpo02.cox.net with bizsmtp id rT8i1Z00H1cVYgg04T8jlQ; Fri, 18 Jul 2008 11:08:43 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: Spark plugs Date: Fri, 18 Jul 2008 08:10:06 -0800 Message-ID: <000001c8e8f0$be4e3290$6401a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C8E8AD.B02AF290" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C8E8AD.B02AF290 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 Never tried a smaller gap with SAG ing plugs since the gap is not adjustable on the NGK BUR 7/9EQ plugs I was using. By the time I got = SAG the first time, the center electrode had burned down to the point where = the gap was almost .100". Amazing that the engine ran as well as it did. =20 BTW, comming up on 250 hours on Iridium plugs with no SAG yet. Very = little 100LL fuel used though. =20 Tracy; =20 Explain to me further: Are you using BUR9EQ leading and 7EQ trailing? = What is the part # of the iridium - same? 250 hours on one set of plugs? =20 I'm happy with the performance of the B9EGV, and have never experienced = SAG - I also use little 100LL (and they seem immune to fouling due to = flooding); but I'm not impressed with how long they last. =20 Al G ------=_NextPart_000_0001_01C8E8AD.B02AF290 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

Never tried a smaller gap with  SAG ing = plugs since the gap is not adjustable on the NGK BUR 7/9EQ plugs I was = using.  By the time I got SAG the first time, the center electrode had burned = down to the point where the gap was almost .100".  Amazing that the = engine ran as well as it did.

 

BTW, comming up on 250 hours on Iridium plugs = with no SAG yet.  Very little 100LL fuel used though.

 

Tracy;

 

Explain to me further:  Are = you using BUR9EQ leading and 7EQ trailing?  What is the part # of the = iridium – same?  250 hours on one set of plugs?

 

I’m happy with the = performance of the B9EGV, and have never experienced SAG – I also use little = 100LL (and they seem immune to fouling due to flooding); but I’m not = impressed with how long they last.

 

Al G

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