X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-db01.mx.aol.com ([205.188.91.95] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5565569 for flyrotary@lancaironline.net; Tue, 29 May 2012 10:16:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.91.95; envelope-from=Lehanover@aol.com Received: from mtaomg-da05.r1000.mx.aol.com (mtaomg-da05.r1000.mx.aol.com [172.29.51.141]) by imr-db01.mx.aol.com (8.14.1/8.14.1) with ESMTP id q4TEFa6S014127 for ; Tue, 29 May 2012 10:15:36 -0400 Received: from core-mod004a.r1000.mail.aol.com (core-mod004.r1000.mail.aol.com [172.29.196.13]) by mtaomg-da05.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id A6E8EE00008B for ; Tue, 29 May 2012 10:15:33 -0400 (EDT) From: Lehanover@aol.com Message-ID: <3043a.92cf1e5.3cf63404@aol.com> Date: Tue, 29 May 2012 10:15:33 -0400 (EDT) Subject: Re: [FlyRotary] Re: Exhaust temp To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_3043a.92cf1e5.3cf63404_boundary" X-Mailer: AOL 9.6 sub 5004 X-Originating-IP: [173.88.30.23] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1338300936; bh=H49ksnOo91h3BtSpKAh1/G3rmnFbWRoWf28u8MvX/Nc=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=tp1gylHjEcz99Emvd8W17x6E1oF4KmDwc1RZtvdySqJ8tAWO9hZ0BikUZlkdNx7zM lAX7r1PDA2C3JLR5O9R5HlbGSvP9DBE8qFsg+TQgbErXg0Aym0acpisx2z/Tc1U5hO bfjZTsXewCF5NEjWnc+3nSCFoOoBcNeDQB0gMKRc= X-AOL-SCOLL-SCORE: 0:2:445850176:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d338d4fc4da056353 --part1_3043a.92cf1e5.3cf63404_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I was hoping you wouldn't see this, but now that the cat is out of the bag............ You can see the need for some shielding between the headers and any items that you don't want at the same temperature. Radiant energy is line of sight. If the header can see it, up goes the temperature. Pieces of .015" stainless stood off the header about 1/2" to 3/4" breaks the line of sight. Building such on the header reduces the amount of material involved. It is easier to not heat things up than it is to cool it after you have. Use 1/4" hose clamps to hold onto the shielding. A small blast tube to keep things moving past the headers is helpful. I can make a picture if you like. Helps keep heat out of the intake system and thus more power. Very easy. Amazing results. Lynn E. Hanover In a message dated 5/29/2012 9:36:04 A.M. Eastern Daylight Time, bbradburry@bellsouth.net writes: The exhaust temp of a rotary is hot. I get that. But should the exhaust be glowing orange?!! I had my older son do a tuning run-up, while I checked out what I could from the outside. Dusk was setting in hard, so it wasn't that bright outside. But, I didn't expect the exhaust to be glowing so brightly. The entire exhaust from the collector back was past cherry red. Is this normal? I'm beginning to expect that my AFR gauge is lying to me. --part1_3043a.92cf1e5.3cf63404_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

I was hoping you wouldn't see this, but now that the cat is out of the= =20 bag............

You can see the need for some shielding between the headers and any it= ems=20 that you don't want at the same temperature. Radiant energy is line of sigh= t. If=20 the header can see it, up goes the temperature.

Pieces of .015" stainless stood off the header about 1/2" to 3/4" brea= ks=20 the line of sight. Building such on the header reduces the amount of materi= al=20 involved. It is easier to not heat things up than it is to cool it after yo= u=20 have. Use 1/4" hose clamps to hold onto the shielding.

A small blast tube to keep things moving past the headers is helpful.<= /DIV>

I can make a picture if you like. Helps keep heat out of the intake sy= stem=20 and thus more power. Very easy. Amazing results.

Lynn E. Hanover

In a message dated 5/29/2012 9:36:04 A.M. Eastern Daylight Time,=20 bbradburry@bellsouth.net writes:

= The=20 exhaust temp of a rotary is hot. I get that. But should the= =20 exhaust be
glowing orange?!!

I had my older son do a tuning run= -up,=20 while I checked out what I could from
the outside. Dusk was sett= ing=20 in hard, so it wasn't that bright outside.
But, I didn't expect the ex= haust=20 to be glowing so brightly. The entire
exhaust from the collector= back=20 was past cherry red.

Is this normal? I'm beginning to expect= that=20 my AFR gauge is lying to me.

<= /HTML> --part1_3043a.92cf1e5.3cf63404_boundary--