X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from imo-m28.mx.aol.com ([64.12.137.9] verified) by logan.com (CommuniGate Pro SMTP 5.1.5) with ESMTP id 1788447 for flyrotary@lancaironline.net; Wed, 24 Jan 2007 19:16:22 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.9; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-m28.mx.aol.com (mail_out_v38_r7.6.) id q.c41.e41c59e (29678) for ; Wed, 24 Jan 2007 19:15:24 -0500 (EST) From: Lehanover@aol.com Message-ID: Date: Wed, 24 Jan 2007 19:15:19 EST Subject: Re: [FlyRotary] Exhaust flange gaskets To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1169684117" X-Mailer: 9.0 Security Edition for Windows sub 5359 X-Spam-Flag: NO -------------------------------1169684117 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 1/24/2007 6:24:06 P.M. Eastern Standard Time, atlasyts@bellsouth.net writes: My hangar mate races rotaries and his buddies and engine builders started asking how to get this "magic" stuff. Aircraft Spruce is the place. Send all royalty checks to my Paypal account, or I'll sue! Buly If your flanges are truly flat, you can use a 1/4" thick bead of 100% GE silicone about 3/4" outboard of the port. Bolt on the header and forget it. The silicone extrudes down to near zero thickness in service. It has never leaked. It is not exposed to pressure even with a high flow muffler in place. The high velocity at the port means low pressure. If the seal fails, air will leak into the exhaust system and make a popping sound on closed throttle. Works great. Lasts until you remove the headers again. Cheap. Lynn E. Hanover -------------------------------1169684117 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 1/24/2007 6:24:06 P.M. Eastern Standard Time,=20 atlasyts@bellsouth.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>My=20 hangar mate races rotaries and his buddies and engine builders =20
started asking how to get this "magic" stuff. Aircraft Spruce is= =20 the
place.
Send all royalty checks to my Paypal account, or I= 'll=20 sue!
Buly

If your flanges are truly flat, you can use a 1/4" thick bead of 100% G= E=20 silicone about 3/4" outboard of the port. Bolt on the header and forget= it.=20 The silicone extrudes down to near

zero thickness in service. It has never leaked. It is not exposed to=20 pressure even with a high flow muffler in place. The high velocity at the po= rt=20 means low pressure. If the seal fails, air will leak into the exhaust system= and=20 make a popping sound on closed throttle.

Works great. Lasts until you remove the headers again. Cheap.

Lynn E. Hanover

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