X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao106.cox.net ([68.230.241.40] verified) by logan.com (CommuniGate Pro SMTP 5.2.5) with ESMTP id 3034381 for flyrotary@lancaironline.net; Sun, 20 Jul 2008 12:44:12 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.40; envelope-from=alventures@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao106.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20080720164332.QBWO28780.fed1rmmtao106.cox.net@fed1rmimpo01.cox.net> for ; Sun, 20 Jul 2008 12:43:32 -0400 Received: from BigAl ([72.192.137.74]) by fed1rmimpo01.cox.net with bizsmtp id sGjX1Z0051cVYgg03GjXwP; Sun, 20 Jul 2008 12:43:31 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Spark plugs Date: Sun, 20 Jul 2008 09:44:58 -0800 Message-ID: <000001c8ea90$53d3f890$6401a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C8EA4D.45B32990" 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_01C8EA4D.45B32990 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit The Iridum plugs are not the old BUR series I used to use. I'll have to get that number for you. I pulled them out of the Renesis crate engines I bought so I assume they are the standard plugs used in the RX-8 car. They look similar to the old style plugs with adjustable gaps but the electrodes are extreamly fine wire. Very expensive (so I'm told) and fragile looking but they work great. Tracy I think that would be the Denso IRT01-31; about $35.00 each. They apparently use iridium for both electrodes. But if they last 10 times as long, it's worth it. Kelly wrote: In case you are not aware of it the NGK B9EGV is available in Iridium.......BR9EIX part # 3981...........Has a resistor........... I have found that on the standard B9EGV the ground electrode erodes and the gap gets wider. Having an iridium center electrode may not improve the lifetime; although they are only about $1.50 more than the standard. Al ------=_NextPart_000_0001_01C8EA4D.45B32990 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

The Iridum plugs are not the old BUR series I = used to use.  I'll have to get that number for you.  I pulled them out = of the Renesis crate engines I bought so I assume they are the standard plugs = used in the RX-8 car.  They look similar to the old style plugs with = adjustable gaps but the electrodes are extreamly fine wire.   Very expensive (so I'm told) and fragile looking but they work great. 

Tracy

I think that would be the Denso = IRT01-31; about $35.00 each.  They apparently use iridium for both = electrodes.  But if they last 10 times as long, it’s worth = it.

 

Kelly wrote:

In case you are not aware of it the NGK B9EGV is = available

in Iridium.......BR9EIX part # 3981...........Has a = resistor...........

 

I have found that on the standard = B9EGV the ground electrode erodes and the gap gets wider.  Having an iridium = center electrode may not improve the lifetime; although they are only about = $1.50 more than the standard.

 

Al

 

 

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