Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Tue, 25 Jan 2005 12:10:55 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d04.mx.aol.com ([205.188.157.36] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 621229 for lml@lancaironline.net; Tue, 25 Jan 2005 11:59:40 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.36; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-d04.mx.aol.com (mail_out_v37_r3.8.) id q.1ea.34e4c4f1 (4410) for ; Tue, 25 Jan 2005 11:59:02 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <1ea.34e4c4f1.2f27d4d6@aol.com> X-Original-Date: Tue, 25 Jan 2005 11:59:02 EST Subject: Re: [LML] Re: Plugs and Mags X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1106672342" X-Mailer: 9.0 Security Edition for Windows sub 5000 -------------------------------1106672342 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 1/25/2005 10:20:28 A.M. Central Standard Time, Michael.S.Reinath@nasa.gov writes: One more question about the iridium plugs. Can you clean these by bead blasting just like the standard plugs, or is the iridium coating fragile? Mike, I don't know how others clean their fine wire plugs but, because of the "fine wire" and its itsy bitsy tip, I just use a brass brush and acetone plus a home built probe to dig out the deposited globules down deep - then blow'm dry with compressed air. There is not much to these electrodes and blasting might do more harm than good. I am sure that you have noted my use of highly technical terms so far. I schedule a cleaning about every 50 hours as the bottom plugs show more deposits since I still have to use oil in the engine. Also, I am using the LASAR "electronic" ignition system and the plug gap is maintained at about .018 - theoretically so that the backup mag function's spark can successfully bridge the gap. Other true electronic ignition systems prefer that the gap be larger - quite a bit larger. If you buy such plugs directly from the manufacturer (Champion?) they seem willing to specifically gap them for you at the larger gap with their special equipment - at least that's what my friend with the blown Lyc in his E-Racer told me. After all, they are expensive and the "fine wire" electrode is more fragile than the massive electrodes in the standard plugs. I don't remember how many hours (or years) ago I started using them without referencing the engine log, but there is no indication that any visible wear (molecular erosion) has taken place. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) Fair and Balanced Opinions at No Charge! There is an oxymoron in that, somewhere... -------------------------------1106672342 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 1/25/2005 10:20:28 A.M. Central Standard Time,=20 Michael.S.Reinath@nasa.gov writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>One more=20 question about the iridium plugs. Can you clean these by
bead blasting= =20 just like the standard plugs, or is the iridium coating=20
fragile?
Mike,
 
I don't know how others clean their fine wire plugs but, because of the= =20 "fine wire" and its itsy bitsy tip, I just use a brass brush and=20 acetone plus a home built probe to dig out the deposited globules down deep=20= -=20 then blow'm dry with compressed air.  There is not much to these electr= odes=20 and blasting might do more harm than good.  I am sure that you have not= ed=20 my use of highly technical terms so far.
 
I schedule a cleaning about every 50 hours as the bottom plugs show mor= e=20 deposits since I still have to use oil in the engine.  Also, I am using= the=20 LASAR "electronic" ignition system and the plug gap is maintained at about .= 018=20 - theoretically so that the backup mag function's spark can=20 successfully bridge the gap.  Other true electronic ignition systems pr= efer=20 that the gap be larger - quite a bit larger.   If you buy such plu= gs=20 directly from the manufacturer (Champion?) they seem willing to=20 specifically gap them for you at the larger gap with their special=20 equipment - at least that's what my friend with the blown Lyc in his=20 E-Racer told me.  After all, they are expensive and the "fine wire"=20 electrode is more fragile than the massive electrodes in the standard=20 plugs.
 
I don't remember how many hours (or years) ago I started using the= m=20 without referencing the engine log, but there is no indication that any= =20 visible wear (molecular erosion) has taken place. =20
 
Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)

Fai= r=20 and Balanced Opinions at No Charge!
There is an oxymoron in that,=20 somewhere...

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