X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 23 Jul 2010 13:39:50 -0400 Message-ID: X-Original-Return-Path: Received: from web36903.mail.mud.yahoo.com ([209.191.85.71] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with SMTP id 4404502 for lml@lancaironline.net; Fri, 23 Jul 2010 12:19:29 -0400 Received-SPF: none receiver=logan.com; client-ip=209.191.85.71; envelope-from=chris_zavatson@yahoo.com Received: (qmail 12995 invoked by uid 60001); 23 Jul 2010 16:18:52 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=5iypQcH7Vr4NHrZFlGQCyVC/DG/aK36hDBkxkFT4T/RCRImnBoxxXCIK5fF1RUiKO9nts2yO3d4EhHD9q+q+5wswfMjHTsBFQYxJ5vFe1su0e8ZUPdPz/chSVcoUhbkeWfufbUr7HP2KMJnthh5hkI1hZcEAhn4EVPEbB0KlsSE=; X-Original-Message-ID: <861926.11433.qm@web36903.mail.mud.yahoo.com> X-YMail-OSG: RNi06PYVM1lqRhGyljvRZAj9j3k4.f1dGLJ_7xkQwoyRYff qZ5P.LemUlf3sx6U9RPpBiwZtXNIXrh9kUj7YYzi6l5xArorBAKPc2etkMCt Sg3TAFAbxziLKEsdIUnQZ2sOlBqMFM09WriIUXhuM5dQMlXvKlB76gmeZj7M eLqGnPAdUVZD0iFPsLWgKTiuXhMfJvzC0uZAwRJkkpjIkFrm.gY1M9OkKjIU N5N962QWc9SOlcY35PIBxPkIlolBZNJqLCeRo6oSzUh9hPXorvgM9_PMF6L9 S1yVCBKfLDNH7QQMfI0OkrYW8bcIzJjq865EGy5DQfCRRR2GRGbuiEN.J4TX RnudoI7BwwbCxds8Nur1OTzjzjWRo9.MZ.pbn8A-- Received: from [149.32.224.33] by web36903.mail.mud.yahoo.com via HTTP; Fri, 23 Jul 2010 09:18:52 PDT X-Mailer: YahooMailRC/420.4 YahooMailWebService/0.8.105.277674 X-Original-Date: Fri, 23 Jul 2010 09:18:52 -0700 (PDT) From: Chris Zavatson Subject: Re: [LML] Re: My airplane is running HOT X-Original-To: Lancair Mailing List MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-373858332-1279901932=:11433" --0-373858332-1279901932=:11433 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Bryan,=0AI would suggest taking pressure measurements before tearing the=A0= installation =0Aapart.=A0 The data will help determine the problem source, = heat generation vs. =0Aheat dissipation.=0ACHTs are primarily driven by EGT= s (mixture) and cooling air flow.=A0 The =0Adifferential pressure test will= verify air flow.=A0 Since CHTs in cruise are good =0Aand reported fuel flo= w in the climb=A0sounds low I would suspect the carb itself.=0AI wouldn't e= xpect any global CHT change by moving the oil cooler, since the =0Asource o= f air and the volume extracted=A0will be=A0roughly the same.=A0 =0A=0AI do = like switching to a larger cooler.=A0 If I recall, you had some kind of spa= ce =0Aconstraint that made it difficult to put the larger cooler in the sam= e location =0Aup front.=0AChris=0A=0A=0AChris Zavatson=0AN91CZ=0A360std=0Aw= ww.N91CZ.com=0A=0A=0A=0A=0A________________________________=0AFrom: Bryan W= ullner =0ATo: lml@lancaironline.net=0ASent: Wed, July 21,= 2010 2:08:42 PM=0ASubject: [LML] Re: My airplane is running HOT=0A=0A=0AI'= m starting with the changing of oil cooler to a larger one and relocation t= o =0Aengine bay with scat ducting to it off the baffling.=0AIf that doesn't= do it I will move on to the next idea.=0AMy hopes are that my oil comes do= wn and helps the cht's too. I also hope that =0Aclosing off the large hole = in the front baffling from old oil cooler placment =0Ahelps with cht's=0ABr= yan=0A=0A>=0A=0A=0A --0-373858332-1279901932=:11433 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
=0A
Bryan,
=0A
I would suggest taking pressure measurement= s before tearing the installation apart.  The data will help dete= rmine the problem source, heat generation vs. heat dissipation.
=0ACHTs are primarily driven by EGTs (mixture) and cooling air flow.  T= he differential pressure test will verify air flow.  Since CHTs in cru= ise are good and reported fuel flow in the climb sounds low I would su= spect the carb itself.
=0A
I wouldn't expect any global CHT change= by moving the oil cooler, since the source of air and the volume extracted=  will be roughly the same. 
=0A
I do like switchin= g to a larger cooler.  If I recall, you had some kind of space constra= int that made it difficult to put the larger cooler in the same location up= front.
=0A
Chris
=0A
 
=0A
 
=0A=
Chris Zavatson
=0A
N91CZ
=0A
360std
=0A=0A

=0A
=0A
=0AFrom: Bryan Wullner= <vonjet@gmail.com>
To: lml@lancaironline.net
Sent: Wed, July 21, 2010 2:08:42 PM
Subject: [LML] Re: My airplane is running HOT
=0A

I'm starting with the changing of oil cooler to a larger one and rel= ocation to engine bay with scat ducting to it off the baffling.
If that = doesn't do it I will move on to the next idea.
My hopes are that my oil = comes down and helps the cht's too. I also hope that closing off the large = hole in the front baffling from old oil cooler placment helps with cht's=0A

Bryan

=0A

=0A

=0A
 

=0A=0A --0-373858332-1279901932=:11433--