Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 609310 for flyrotary@lancaironline.net; Sun, 16 Jan 2005 14:34:30 -0500 Received-SPF: none receiver=logan.com; client-ip=24.25.9.101; envelope-from=echristley@nc.rr.com Received: from [192.168.0.2] (cpe-065-187-248-049.nc.rr.com [65.187.248.49]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with ESMTP id j0GJXx4R006636 for ; Sun, 16 Jan 2005 14:33:59 -0500 (EST) Message-ID: <41EAC1A6.7080507@nc.rr.com> Date: Sun, 16 Jan 2005 14:33:58 -0500 From: Ernest Christley User-Agent: Mozilla Thunderbird 0.8 (X11/20041020) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: stock 4-port exhaust port measurement? References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Symantec AntiVirus Scan Engine Russell Duffy wrote: > Well, mine are rectangular on both the front and rear housing, and > larger but still rectangular on the center housing. Since my engine > is in pieces, I can tell you that these holes connect to the round > holes that are below the exhaust ports. My guess would be that these > are channels for exhaust to heat the intake manifold, but I admit that > I don't really know for sure. I'm sure someone here does though. > > Cheers, > Rusty (converting from bent mechanical flap handle to electric flaps) Aren't these the exhaust gas recirculation holes? Part of the emissions contol stuff that we don't have to deal with?