X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp1.av-mx.com ([137.118.16.57] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4969886 for flyrotary@lancaironline.net; Sat, 07 May 2011 10:13:44 -0400 Received-SPF: pass receiver=logan.com; client-ip=137.118.16.57; envelope-from=res12@fairpoint.net Received: from main (dflo-66-243-231-134.gtcom.net [66.243.231.134]) (Authenticated sender: res12@fairpoint.net) by smtp1.av-mx.com (Postfix) with ESMTP id DA5D529198E for ; Sat, 7 May 2011 10:13:08 -0400 (EDT) Message-ID: <0E5E0B0E12D54830A632D94847833824@main> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Spark Plugs AR2592 Date: Sat, 7 May 2011 09:13:46 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01CC0C97.11BC4D50" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6090 This is a multi-part message in MIME format. ------=_NextPart_000_0007_01CC0C97.11BC4D50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Lynn. Richard Sohn N2071U ----- Original Message -----=20 From: Lehanover@aol.com=20 To: Rotary motors in aircraft=20 Sent: Friday, May 06, 2011 10:20 PM Subject: [FlyRotary] Re: Spark Plugs AR2592 I forgot about that. You can mill off those handy eyebrows around the = plug holes, Or with a good electric die grinder with a carbide bit. Or = buy a thin wall socket from Racing Beat. Or make one yourself on your = lathe. Or, use the die grinder to enlarge the hole to fit the socket. There is enough material. All of this to force you to use NGK plugs.=20 Now tighten the new plug into a scrap housing, or your wife's Honda to = 14 foot pounds and then back out. This to flatten the sealing washer. Then wipe on just a hint of Nickel anti-seize on the threads. Nothing = within 1/4" of the tip. Practice torqueing to 10 pounds with extension = sticking through between your middle and ring fingers. Torque a plug = into a scrap housing to 9 pounds, then turn it by hand to what you think = is 10 pounds. Then check the plug with the wrench set at 11 pounds. The plug should turn a bit to get to 11 pounds. Get a feel for 10 = pounds using your wrist only. 10 pounds with lube is plenty. After a few = installations the anti-seize will have been spread all the way to the = inside end of the plug hole. Great heat conductivity. Plugs will never = lock up in the hole. Threads will last as long as the housing.=20 Always use a torque wrench. But if none is available you can do the = ring finger trick and get 10 pounds every time. Only you tighten plugs, = not your ham fisted brother in law. Lynn E. Hanover =20 In a message dated 5/6/2011 9:11:15 P.M. Paraguay Standard Time, = res12@fairpoint.net writes: Question for Lynn, what are the racers doing about torqueing this plug? its hex section = disappears in the rotor housing because it is so short.=20 Along the same line, I considered some time ago trying surface gap = plugs, but ran into the same problem. By the way, the AR2592 is no longer carried by AutoZone, it is now = available at Advanced Auto Parts. Richard Sohn N2071U ------=_NextPart_000_0007_01CC0C97.11BC4D50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks Lynn.
 
Richard Sohn
N2071U
----- Original Message -----
From:=20 Lehanover@aol.com
Sent: Friday, May 06, 2011 = 10:20 PM
Subject: [FlyRotary] Re: Spark = Plugs=20 AR2592

I forgot about that. You can mill off those handy eyebrows around = the=20 plug holes, Or with a good electric die grinder with a carbide bit. Or = buy a=20 thin wall socket from Racing Beat. Or make one yourself on your lathe. = Or, use=20 the die grinder to enlarge the hole to fit the socket.
There is enough material. All of this to force you to use NGK=20 plugs. 
 
Now tighten the new plug into a scrap housing, or your wife's = Honda to 14=20 foot pounds and then back out. This to flatten the sealing = washer.
Then wipe on just a hint of Nickel anti-seize on the threads. = Nothing=20 within 1/4" of the tip. Practice torqueing to 10 pounds with extension = sticking through between your middle and ring fingers. Torque a plug = into a=20 scrap housing to 9 pounds, then turn it by hand to what you think is = 10=20 pounds. Then check the plug with the wrench set at 11 pounds.
The plug should turn a bit to get to 11 pounds. Get a feel for 10 = pounds=20 using your wrist only. 10 pounds with lube is plenty. After a few=20 installations the anti-seize will have been spread all the way to the = inside=20 end of the plug hole. Great heat conductivity. Plugs will never lock = up in the=20 hole. Threads will last as long as the housing.
 
Always use a torque wrench. But if none is available you can = do the=20 ring finger trick and get 10 pounds every time. Only you tighten = plugs, not=20 your ham fisted brother in law.
 
Lynn E. Hanover  
 
In a message dated 5/6/2011 9:11:15 P.M. Paraguay Standard Time,=20 res12@fairpoint.net writes:
Question for Lynn,
 
what are the racers doing about = torqueing this=20 plug? its hex section disappears in the rotor housing because it is = so=20 short.
 
Along the same line, I considered = some time ago=20 trying surface gap plugs, but ran into the same = problem.
 
By the way, the AR2592 is no longer = carried by=20 AutoZone, it is now available at Advanced Auto Parts.
 
Richard=20 = Sohn
N2071U
= ------=_NextPart_000_0007_01CC0C97.11BC4D50--