Received-SPF: none
 receiver=logan.com; client-ip=68.230.241.37; envelope-from=dale.r@cox.net
From: Dale Rogers <dale.r@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Spark Plug type 
Date: Sun, 10 Apr 2005 15:17:39 -0400
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Message-Id: <20050410191741.YZBT4787.fed1rmmtao02.cox.net@smtp.west.cox.net>

Ed,

   It may be my memory is foggy (from working too many hours 
in a week) but, IRRC, "reach" refers to the _thread_ length, 
not the total penetration including the electrode.  It would 
be good to lay the new plugs along side the standard ones, 
with a straight edge on the gasket service, and compare 
them.

Dale R.
COZY MkIV-R13B #1254
.        (__
. |----==(__)==----|
.       o/  \o

---- Ed Anderson <eanderson@carolina.rr.com> wrote:

> I went back and check the e mail and sure enough I misread the type plug as  B9EQV vice B9EGV.  Interesting in I had actually showed the e mail to the auto parts guy with the correct type circled - but verbally spoke the B9EQV, neither one of us caught the "minor" difference - sigh!    Both plugs have the 19mm (3/5") reach - but don't know if the ground electrode is different or not.   The B9EQV looks just like a conventional plug with perhaps a bit finer center electrode and with a ground strap off the side.  Any difference there could have made a difference - assuming the plugs are the problem.
> 
> Well, in a few minutes I am off to see what I can find out and to start taken the engine off.
>