Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 554345 for flyrotary@lancaironline.net; Thu, 02 Dec 2004 22:10:19 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.68; envelope-from=sqpilot@bellsouth.net Received: from p3e2l2 ([216.78.114.133]) by imf20aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with SMTP id <20041203030948.CHWD1976.imf20aec.mail.bellsouth.net@p3e2l2> for ; Thu, 2 Dec 2004 22:09:48 -0500 Message-ID: <026701c4d8e4$b72ded40$5b724ed8@p3e2l2> From: "paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: (unshrouded plug ?)required wrench Date: Thu, 2 Dec 2004 21:03:49 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 When I looked at the NGK spark plug site and looked up my 1989 RX7 13b engine, the recommended plug was the one with the extended shank (the part sticking out of the engine, above the sealing washer). It does not need the thinner "special" plug wrench. I think I'll stick with the NGK BR9EQ plugs, and use my regular old Sears Craftsman deep well socket. Paul call me cheap Conner ----- Original Message ----- From: "Ed Anderson" To: "Rotary motors in aircraft" Sent: Thursday, December 02, 2004 6:37 PM Subject: [FlyRotary] Re: (unshrouded plug ?)required wrench > I agree with Bill. I think one reason Mazda wanted to make it difficult to > stick any other than the stock plug is that some plug electrodes can reach > through into the combustion chamber and clip the apex seal as pointed out by > Paul Yaw. > > Ed Anderson > ----- Original Message ----- > From: "Bill Dube" > To: "Rotary motors in aircraft" > Sent: Thursday, December 02, 2004 7:33 PM > Subject: [FlyRotary] Re: (unshrouded plug ?)required wrench > > > > > > > > > >If I end up using these plugs full time later, I will consider Lynn H's > > >suggestion to remove the eyebrows on the block, but really like to know > > >why Mazda went to the trouble of putting them on before grinding them > off. > > > > Simply looking at the eyebrows, they seem to serve no purpose > > other than to make it impossible (or at least very difficult) to put in a > > 13/16" type spark plug. Perhaps this is their intended purpose. The Mazda > > folks don't want someone to put in the "wrong" spark plugs, perhaps. > > > > > > >> Homepage: http://www.flyrotary.com/ > > >> Archive: http://lancaironline.net/lists/flyrotary/List.html > > > > > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html >