X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m24.mx.aol.com ([64.12.137.5] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2611408 for flyrotary@lancaironline.net; Sun, 23 Dec 2007 21:54:11 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.5; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-m24.mx.aol.com (mail_out_v38_r9.3.) id q.c55.2365e573 (29678) for ; Sun, 23 Dec 2007 21:53:25 -0500 (EST) From: Lehanover@aol.com Message-ID: Date: Sun, 23 Dec 2007 21:53:25 EST Subject: Re: [FlyRotary] Re: Spark Plugs To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1198464805" X-Mailer: 9.0 Security Edition for Windows sub 5378 X-Spam-Flag: NO -------------------------------1198464805 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en =20 In a message dated 12/23/2007 8:28:06 P.M. Eastern Standard Time, =20 eanderson@carolina.rr.com writes: I just though I=E2=80=99d post the photo for anyone=E2=80=99s comment as th= is is my first=20 experience with these plugs in this engine for this many hours. Some depos= its=20 on the leading - should I maybe consider a step toward a higher heat range?= =20 Happy Holidays!=20 In olden times we could do a clean cut, read the plugs and re-jet up or dow= n=20 depending. But then motor fuel had lots of lead in it and would give you a=20 color. A clean cut was from at temperature an a full throttle load, ignitio= n=20 off and clutch in. So you were looking at the color of an operational plug.= =20 =20 Today we have no lead, and no colors to look at. So nobody looks at plugs =20 anymore. If you want to check for too high a heat range, check for cement bo= il =20 around the center electrode, and or flecks of porcelain missing. =20 The light color with a plume of black is typical but usually the leading =20 plug will just look dirty. Even the end of the shell will be black. These pl= ugs =20 are not the coldest plugs you can get. So long as the cement is staying out=20= of=20 sight, these are fine. You use a higher heat range if you get fouling below= =20 full throttle. You cannot hurt an engine with too low a heat range. You can=20= =20 destroy it with too high a heat range. I use the coldest heat range made by=20 NGK and they don't foul. R6725-11.5 $25.00 each. =20 Lynn E. Hanover **************************************See AOL's top rated recipes=20 (http://food.aol.com/top-rated-recipes?NCID=3Daoltop00030000000004) -------------------------------1198464805 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en
In a message dated 12/23/2007 8:28:06 P.M. Eastern Standard Time,=20 eanderson@carolina.rr.com writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>

I just though I=E2=80=99d=20= post the photo=20 for anyone=E2=80=99s comment as this is my first experience with these plu= gs in this=20 engine for this many hours.  Some deposits on the leading - should I=20 maybe consider a step toward a higher heat range?

 

Happy=20 Holidays!

 

In olden times we could do a clean cut, read the plugs and re-jet up or= =20 down depending. But then motor fuel had lots of lead in it and would give=20 you a color. A clean cut was from at temperature an a full throttle loa= d,=20 ignition off and clutch in. So you were looking at the color of an operation= al=20 plug.
 
Today we have no lead, and no colors to look at. So nobody looks at plu= gs=20 anymore. If you want to check for too high a heat range, check for cement bo= il=20 around the center electrode, and or flecks of porcelain missing.
 
The light color with a plume of black is typical but usually the leadin= g=20 plug will just look dirty. Even the end of the shell will be black. These pl= ugs=20 are not the coldest plugs you can get. So long as the cement is staying out=20= of=20 sight, these are fine. You use a higher heat range if you get fouling b= elow=20 full throttle. You cannot hurt an engine with too low a heat range. You can=20 destroy it with too high a heat range. I use the coldest heat range made by=20= NGK=20 and they don't foul. R6725-11.5 $25.00 each.
 
Lynn E. Hanover



See A= OL's top rated recipes and easy ways to stay in shape for winter.
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