Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Thu, 11 Nov 2004 09:09:42 -0500 Message-ID: X-Original-Return-Path: Received: from www.dynacomm.ws ([198.22.63.66] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 527498 for lml@lancaironline.net; Thu, 11 Nov 2004 08:37:32 -0500 Received-SPF: none receiver=logan.com; client-ip=198.22.63.66; envelope-from=lorn@dynacomm.ws Received: from [10.0.1.202] (adsl-69-209-143-111.dsl.sfldmi.ameritech.net [69.209.143.111]) by www.dynacomm.ws (8.10.2/8.10.2) with ESMTP id iABDaiU27128; Thu, 11 Nov 2004 08:36:44 -0500 Mime-Version: 1.0 (Apple Message framework v619) Content-Type: text/plain; charset=ISO-8859-1; delsp=yes; format=flowed X-Original-Message-Id: Content-Transfer-Encoding: quoted-printable X-Original-Cc: John Stchur , Walter Atkinson From: "Lorn H. Olsen" Subject: Re: LNC2 Cooling X-Original-Date: Thu, 11 Nov 2004 08:36:46 -0500 X-Original-To: Lancair List X-Mailer: Apple Mail (2.619) Walter, In the October 29, 2004 issue of General Aviation News. Paul McBride =20 states the my temperatures are completely normal. Paul retired after 40 =20= years with Lycoming. The article talks about an IO-540 but my =20 Operator's Manual has the exact same temperatures that are discussed in =20= this article. Paul's article can be found at: http://www.generalaviationnews.com/editorial/articledetail.lasso?-=20 token.key=3D10202&-token.src=3Dcolumn&-nothing > Date: November 8, 2004 9:19:54 PM EST > Posted for Walter Atkinson : > > Lorn: > 430dF in the climb? That's higher than I would want. I make sure my =20= > CHTs do not get above 380dF, and we shoot for the mid 300s in climb. > > Your engine would appreciate it if you could lower the climb CHT of =20= > 430. We have seen multiple episodes of thermal runaway at temps above =20= > 420dF and it's good to remember that the head has lost 50% of it's =20 > strength at 400dF. > > I suggest that your FF might be a tad low and/or there are baffle =20 > issues with that cylinder. My engine has a carburetor and can not be adjusted. I climb at full =20 rich with a FF of about 10 gph at 2,600 rpm. > Walter > >> My CHTs are running at between 320=B0F and 390=B0F in = cruise(depending on =20 >> the power setting and OAT) and up to 430=B0F in climb. I have 1,000 =20= >> hours on the engine and it still looks perfect from a compression and = =20 >> oil consumption point of view. What are we doing so differently? >> Lorn >> -- Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp. 248-345-0500, mailto:lorn@dynacomm.ws LNC2, O-320-D1F, N31161, Y47, SE Michigan