X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 27 Apr 2006 22:57:28 -0400 Message-ID: X-Original-Return-Path: Received: from web61317.mail.yahoo.com ([209.73.179.71] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with SMTP id 1082912 for lml@lancaironline.net; Thu, 27 Apr 2006 05:22:54 -0400 Received-SPF: none receiver=logan.com; client-ip=209.73.179.71; envelope-from=charliekohler@yahoo.com Received: (qmail 4829 invoked by uid 60001); 27 Apr 2006 09:22:09 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=2oSR830/9XsXCpyR7KI9WJpyy5cs4g8VtwG3U5HgkIdxbCqn21EKGIjpo/ikPmzif+p7/KBCjEDKSjHw2Mkr/L874JpBlzrZYjSCBccOV/po86QfoGepVxd5JL+4kY9p2A8WMA7tVarMuXZHZcNftEw19YuiZeQTIMWOAHfvV1g= ; X-Original-Message-ID: <20060427092209.4827.qmail@web61317.mail.yahoo.com> X-Original-Date: Thu, 27 Apr 2006 02:22:09 -0700 (PDT) From: Charlie Kohler Reply-To: Charlie Kohler Subject: Re: [LML] Hot pistons X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-201820995-1146129729=:99359" --0-201820995-1146129729=:99359 Content-Type: text/plain; charset=us-ascii Jeff--Paul In my experience (counted on one hand- once in brand new ((1 hr)) - and from what Iv'e been told--- Generally speaking-- Detonation erodes the center of the piston. Preignition erodes the edge as you have here. So I agree with Paul. Charlie K. ----- Original Message ---- From: Paul Lipps To: Lancair Mailing List Sent: Thursday, April 27, 2006 1:30:01 AM Subject: [LML] Hot pistons Jeff! I'd have to say that came from pre-ignition, not from operating in the normal, Lycoming-recommended range, unless it was from an engine operated above their limits. --0-201820995-1146129729=:99359 Content-Type: text/html; charset=us-ascii
Jeff--Paul
In my experience (counted on one hand- once in brand new ((1 hr)) - and from what Iv'e been told--- Generally speaking--
Detonation erodes the center of the piston. Preignition erodes the edge as you have here.
So I agree with Paul. 
Charlie K.


----- Original Message ----
From: Paul Lipps <elippse@sbcglobal.net>
To: Lancair Mailing List <lml@lancaironline.net>
Sent: Thursday, April 27, 2006 1:30:01 AM
Subject: [LML] Hot pistons

Jeff! I'd have to say that came from pre-ignition, not from operating in the normal, Lycoming-recommended range, unless it was from an engine operated above their limits.
--0-201820995-1146129729=:99359--