Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Tue, 23 Sep 2003 19:18:11 -0400 Message-ID: X-Original-Return-Path: Received: from [128.83.126.134] (HELO mail.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP-TLS id 2590557 for flyrotary@lancaironline.net; Tue, 23 Sep 2003 08:47:40 -0400 Received: (qmail 37491 invoked from network); 23 Sep 2003 12:47:21 -0000 Received: from dhcp-191-101.per.utexas.edu (HELO benefits3.mail.utexas.edu) (146.6.191.101) by wb1.mail.utexas.edu with SMTP; 23 Sep 2003 12:47:21 -0000 X-Original-Message-Id: <5.1.1.5.2.20030923073914.011c4758@localhost> X-Sender: msteitle@mail.utexas.edu@localhost X-Mailer: QUALCOMM Windows Eudora Version 5.1.1 X-Original-Date: Tue, 23 Sep 2003 07:47:16 -0500 X-Original-To: "Rotary motors in aircraft" From: Mark Steitle Subject: Re: [FlyRotary] Re: 20B - Coils-On-Plugs In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Al, My coils fit the LS1 Silverado pickup. I like the fact that the hookup wires come out the opposite end from the high voltage. Notice that they are turned various directions, in order to get them to fit together tighter. They also use a different connector than the Corvette coil. A side note... I also played around with 3 dual-tower coils from a V-6 Buick. They use a wasted spark design like Mazda, except their coils don't have the ignitor circuit built in. So, I would have had to complicate things by adding those to the schematic and so I didn't use them because of that. Main benefit would have been that they would be lighter. Mark At 10:09 PM 9/22/2003 -0700, you wrote: >Mark; > >Interesting setup. Those aren't the Corvette LS1 coils that I have. >Were ther two versions for the Covette, or are yours the version that is >used for the LS1 engine in the pickup (a.k.a., truck)? > >Al > >Bill, >Here's three pictures of my coils-on-plugs setup, unpainted. (Lest >anyone get >the idea of using garden hose for plug-coil connectors, they were for >mockup >purposes only.) The brackets mount to the holes in the rotor housings >that >are normally used for knock sensors. I understand these bolt holes are >only >on some of the 3rd gen engines. So, you would have to find somewhere >else to >bolt to. The bracket is made of 1/2" square 4130 tube. The "wires" >going >from the coil to the plug cap were made from springs which I stretched >out a >bit. Since these coils are made to mount directly on the valve covers >of the >LS1, I didn't see any reason not to mount them where I did. However, if >I >start experiencing coil failures, I will most likely move them, or mount >them >on the plugs using shock mounts. >-- Mark S. > > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html