X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 20 May 2009 14:58:32 -0400 Message-ID: X-Original-Return-Path: Received: from imr-m07.mx.aol.com ([64.12.138.209] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3648002 for lml@lancaironline.net; Wed, 20 May 2009 09:27:55 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.209; envelope-from=VTAILJEFF@aol.com Received: from imo-ma03.mx.aol.com (imo-ma03.mx.aol.com [64.12.78.138]) by imr-m07.mx.aol.com (v107.10) with ESMTP id RELAYIN1-24a14051530d; Wed, 20 May 2009 09:26:45 -0400 Received: from VTAILJEFF@aol.com by imo-ma03.mx.aol.com (mail_out_v40_r1.5.) id q.c34.57fd7df0 (34918) for ; Wed, 20 May 2009 09:26:37 -0400 (EDT) Received: from smtprly-db03.mx.aol.com (smtprly-db03.mx.aol.com [205.188.249.154]) by cia-da03.mx.aol.com (v123.4) with ESMTP id MAILCIADA033-5c424a140503114; Wed, 20 May 2009 09:26:37 -0400 Received: from webmail-stg-m06 (webmail-stg-m06.sim.aol.com [64.12.222.105]) by smtprly-db03.mx.aol.com (v123.4) with ESMTP id MAILSMTPRLYDB038-5c424a140503114; Wed, 20 May 2009 09:26:27 -0400 References: X-Original-To: lml@lancaironline.net Subject: Re: [LML] Temperature spike X-Original-Date: Wed, 20 May 2009 09:26:27 -0400 X-AOL-IP: 64.12.78.138 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: vtailjeff@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CBA765B6863CA9_3FD0_73C2_webmail-stg-m06.sysops.aol.com" X-Mailer: AOL Webmail 42951-STANDARD Received: from 75.58.187.84 by webmail-stg-m06.sysops.aol.com (fe80::2446:158c:877:7a1%11) with HTTP (WebMailUI); Wed, 20 May 2009 09:26:27 -0400 X-Original-Message-Id: <8CBA765B66C0D73-3FD0-3813@webmail-stg-m06.sysops.aol.com> X-Spam-Flag:NO ----------MB_8CBA765B6863CA9_3FD0_73C2_webmail-stg-m06.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii" Art, How quickly did the CHT change? What kind of engine monitor are you operating? If it was very rapid you might have a monitor issue. CHTs do not instantaneously change. Jeff -----Original Message----- From: Art Bertolina To: lml@lancaironline.net Sent: Tue, 19 May 2009 7:39 pm Subject: [LML] Temperature spike Had an interesting thing happen on a flight from?AZ to So Calif. Cruising at 14500ft had been in cruise about 40 min. was running 2600RPM 31"? 18GPH about 75 deg. LOP. The temp on #1 cylinder went from 315 to 500 oil pressure dropped to 15 oil temp went from 178 to 197. I went full rich reduced power to 17" and went to nearest airport to land,?this action brought temps back into normal as well as oil pressure to 38. On the ground I removed the top cowl to be sure there where no oil leaks and found non. Refowled plane took off and did some laps in the pattern everything normal started home and at 8500 ft and 30 minutes later same thing CHT 425 oil pressure 21 oil temp 174. I had been flying at 2500/22". I reduced power again and temps came back down, I continued home. I since have removed the cylinder and have had it inspected by 2 competent mechanics and no damage.?The engine has 260hr.s, does anyone have any ideas as to the problem?. Your thoughts and ideas would be appreciated Art ----------MB_8CBA765B6863CA9_3FD0_73C2_webmail-stg-m06.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/html; charset="us-ascii" Art,

How quickly did the CHT change? What kind of engine monitor are you operating? If it was very rapid you might have a monitor issue. CHTs do not instantaneously change.

Jeff


-----Original Message-----
From: Art Bertolina <artbertolina@earthlink.net>
To: lml@lancaironline.net
Sent: Tue, 19 May 2009 7:39 pm
Subject: [LML] Temperature spike

Had an interesting thing happen on a flight from AZ to
So Calif. Cruising at 14500ft had been in cruise about
40 min. was running 2600RPM 31"  18GPH about
75 deg. LOP. The temp on #1 cylinder went from 315
to 500 oil pressure dropped to 15 oil temp went from
178 to 197. I went full rich reduced power to 17" and
went to nearest airport to land, this action brought
temps back into normal as well as oil pressure to 38.
On the ground I removed the top cowl to be sure there
where no oil leaks and found non. Refowled plane
took off and did some laps in the pattern everything
normal started home and at 8500 ft and 30 minutes later
same thing CHT 425 oil pressure 21 oil temp 174. I had been flying at 2500/22". I reduced power again and temps
came back down, I continued home. I since have removed
the cylinder and have had it inspected by 2 competent
mechanics and no damage. The engine has 260hr.s, does
anyone have any ideas as to the problem?. Your thoughts
and ideas would be appreciated
Art
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