X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 24 Jul 2010 10:13:15 -0400 Message-ID: X-Original-Return-Path: Received: from mail-qw0-f52.google.com ([209.85.216.52] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4404948 for lml@lancaironline.net; Fri, 23 Jul 2010 20:20:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.216.52; envelope-from=vonjet@gmail.com Received: by qwf7 with SMTP id 7so3871261qwf.25 for ; Fri, 23 Jul 2010 17:19:33 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=Z0cDWRexey4GLJght6vwEZ88kva2uc8QyDMMlUUYTMkcVFbLMgHlvTyaUmgMZ5j47p jzqjIpf+lEo8kMBw6eDd0eFEmXLLpTkGfaEZoxhLD14DVosFkcGG7nHgr6Bv2Z/Ucc4n g7ykDRMjPUyjOI+U1fZs79hiZGxyVFtoJSZRg= MIME-Version: 1.0 Received: by 10.224.11.131 with SMTP id t3mr3341777qat.11.1279930773787; Fri, 23 Jul 2010 17:19:33 -0700 (PDT) Received: by 10.229.240.147 with HTTP; Fri, 23 Jul 2010 17:19:33 -0700 (PDT) In-Reply-To: References: X-Original-Date: Fri, 23 Jul 2010 17:19:33 -0700 X-Original-Message-ID: Subject: Re: [LML] Re: My airplane is running HOT From: Bryan Wullner X-Original-To: Lancair Mailing List Content-Type: multipart/alternative; boundary=000e0cd1f8c81bd55c048c171b75 --000e0cd1f8c81bd55c048c171b75 Content-Type: text/plain; charset=ISO-8859-1 Too late on the tear apart. I already made the plenum for the larger cooler and hoses. I removed the old one and I am getting ready to re-install the new cooler. Should be done on Monday. I didn't like the cooler up front anyway. It was rubbing on my cowling and damaged it. I wish I would have done this from the start. I wouldn't have a big chunk of paint missing from my cowling. And because of the space I had to use a 7 vane instead of the 9 vane. If this doesn't help then I will consider having the carb looked at. As far as pressure measurements I don't know how I would get this done without drilling holes in my firewall and I'd prefer not to do that as I have it all sealed up pretty good. How did you do it on yours? how many holes do you need if I do need to do this? Bryan On Fri, Jul 23, 2010 at 10:39 AM, Chris Zavatson wrote: > Bryan, > I would suggest taking pressure measurements before tearing > the installation apart. The data will help determine the problem source, > heat generation vs. heat dissipation. > CHTs are primarily driven by EGTs (mixture) and cooling air flow. The > differential pressure test will verify air flow. Since CHTs in cruise are > good and reported fuel flow in the climb sounds low I would suspect the carb > itself. > 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. > I do like switching to a larger cooler. If I recall, you had some kind of > space constraint that made it difficult to put the larger cooler in the same > location up front. > Chris > > > Chris Zavatson > N91CZ > 360std > www.N91CZ.com > > ------------------------------ > *From:* Bryan Wullner > *To:* lml@lancaironline.net > *Sent:* Wed, July 21, 2010 2:08:42 PM > > *Subject:* [LML] Re: My airplane is running HOT > > I'm starting with the changing of oil cooler to a larger one and relocation > 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 > > Bryan > > > > > --000e0cd1f8c81bd55c048c171b75 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Too late on the tear apart.
I already made the plenum for the larger co= oler and hoses. =A0I removed the old one and I am getting ready to re-insta= ll the new cooler. Should be done on Monday.=A0
I didn't like= the cooler up front anyway. It was rubbing on my cowling and damaged it. I= wish I would have done this from the start. I wouldn't have a big chun= k of paint missing from my cowling. And because of the space I had to use a= 7 vane instead of the 9 vane.=A0
If this doesn't help then I will consider having the carb looked a= t.=A0
As far as pressure measurements I don't know how I woul= d get this done without drilling holes in my firewall and I'd prefer no= t to do that as I have it all sealed up pretty good. =A0How did you do it o= n yours? how many holes do you need if I do need to do this?

Bryan



On Fri, Jul 23, 2010 at 10:39 AM, Chris Zavatson <chris_zavatson@yahoo.com= > wrote:
Bryan,
I would suggest taking pressure measurements before tearing the=A0inst= allation apart.=A0 The data will help determine the problem source, heat ge= neration vs. heat dissipation.
CHTs are primarily driven by EGTs (mixture) and cooling air flow.=A0 T= he differential pressure test will verify air flow.=A0 Since CHTs in cruise= are good and reported fuel flow in the climb=A0sounds low I would suspect = the carb itself.
I wouldn't expect any global CHT change by moving the oil cooler, = since the source of air and the volume extracted=A0will be=A0roughly the sa= me.=A0
I do like switching to a larger cooler.=A0 If I recall, you had some k= ind of space constraint that made it difficult to put the larger cooler in = the same location up front.
Chris
=A0
=A0
Chris Zavatson
N91CZ
360std
From: Bryan Wullner <vonjet@gmail.com><= br>To: lml@lancaironline.net
Sent: Wed, July 21, 2010 2:0= 8:42 PM

Subject: [LML] Re: My airplane is running HOT

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 th= e large hole in the front baffling from old oil cooler placment helps with = cht's

Bryan

=A0



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