X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 26 Apr 2005 19:09:40 -0400 Message-ID: X-Original-Return-Path: Received: from systems3.net ([68.14.236.16] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTPS id 915111 for lml@lancaironline.net; Tue, 26 Apr 2005 10:39:24 -0400 Received-SPF: none receiver=logan.com; client-ip=68.14.236.16; envelope-from=cberland@systems3.net Received: from systems0d3b724 ([192.168.1.81]) by systems3.net (8.13.4/8.13.4/Debian-1) with SMTP id j3QEcbGs027741 for ; Tue, 26 Apr 2005 07:38:37 -0700 X-Original-Message-ID: <002a01c54a6c$94173740$5101a8c0@systems0d3b724> From: "Craig Berland" X-Original-To: "Lancair Mail List" Subject: RE:Plasma III on high compression engines X-Original-Date: Tue, 26 Apr 2005 07:30:59 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0027_01C54A31.E4A0E610" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 X-Virus-Scanned: ClamAV 0.84rc1/854/Tue Apr 26 05:28:25 2005 on systems3.net X-Virus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0027_01C54A31.E4A0E610 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable "I am thinking about replacing the LASAR system on my IO-540 with a = Plasma III system from Lightspeed. I noted on the Web site that the = magnet placement is different for 8.5 compression engines than for = "higher" compression engines. Since mine has experimental 10 compression = pistons, I was wondering if there was a problem. Also, I am running = relatively low temperature plugs (37) which I understand is required = because of the high compression. Is there a problem with the combination = of high compression and the hotter spark in the Plasma III system? Love = to hear from anyone who is running high compression pistons and any kind = of electronic ignition system.Halle, John" John, I'm not sure of your question. However, the best timing slightly = retards as compression ration is increased. At least this is true on = some engines. The octane requirement increases as compression ratio is = increased. So if you are worried about detonation then you would retard = the timing. Some people become so worried about detonation they = eliminate the benefits of higher compression ratio by over retarding the = timing. There is not a problem using an ignition system with more spark = energy. As a matter of fact, the required spark energy goes up as = compression ratio is increased. The required spark energy also goes up = with boost. Craig Berland ------=_NextPart_000_0027_01C54A31.E4A0E610 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
"I am thinking about replacing the LASAR system on my IO-540 = with a=20 Plasma III system from Lightspeed. I noted on the Web site that the = magnet=20 placement is different for 8.5 compression engines than for "higher" = compression=20 engines. Since mine has experimental 10 compression pistons, I was = wondering if=20 there was a problem. Also, I am running relatively low temperature plugs = (37)=20 which I understand is required because of the high compression. Is there = a=20 problem with the combination of high compression and the hotter spark in = the=20 Plasma III system? Love to hear from anyone who is running high = compression=20 pistons and any kind of electronic ignition system.Halle, = John"
 
John, I'm not sure of your question. = However, the=20 best timing slightly retards as compression ration is increased. At = least this=20 is true on some engines. The octane requirement increases as compression = ratio=20 is increased. So if you are worried about detonation then you would = retard the=20 timing. Some people become so worried about detonation they eliminate = the=20 benefits of higher compression ratio by over retarding the timing. There = is not=20 a problem using an ignition system with more spark energy. As a matter = of fact,=20 the required spark energy goes up as compression ratio is increased. The = required spark energy also goes up with boost.
Craig = Berland
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