Return-Path: Received: from web52709.mail.yahoo.com ([206.190.39.160] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with SMTP id 522406 for flyrotary@lancaironline.net; Mon, 08 Nov 2004 09:09:14 -0500 Received-SPF: none receiver=logan.com; client-ip=206.190.39.160; envelope-from=squiggles@yahoo.com Message-ID: <20041108140844.47749.qmail@web52709.mail.yahoo.com> Received: from [169.200.133.38] by web52709.mail.yahoo.com via HTTP; Mon, 08 Nov 2004 06:08:44 PST Date: Mon, 8 Nov 2004 06:08:44 -0800 (PST) From: Scott Subject: die on a 6 port To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Good Morning... A 6 port engine having the auxiliary and secondary ports with, I am assuming here, their own respective wave opening and closing events. Now only one intake runner serving both ports, which port/wave event do you time your intake runner length to? The auxiliary as this is the port which opens later and closes later? But, I then miss the exhaust burp, A pulse?, as this went with the opening of the secondary port... If I choose the secondary, then my intake charge leaks out when the auxiliary opens. Perhaps a 6 port was not the wisest of choices? I had originally thought I would use the opening of the secondary port and the closing of the auxiliary port as my starting point for capturing the DIE. This led to a port-to-port of somewhere in the 50" range. Well, I have 20" on runner welded up, then started thinking where was I going to find another 30" under the cowl. Now I do have a lot of room under the cowl, but the 30" just started to sink in... Thank You. -Scott __________________________________ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com