X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 19 Jul 2010 06:15:19 -0400 Message-ID: X-Original-Return-Path: Received: from mail-iw0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4397786 for lml@lancaironline.net; Sun, 18 Jul 2010 22:17:37 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=donkarich@gmail.com Received: by iwn8 with SMTP id 8so3835341iwn.25 for ; Sun, 18 Jul 2010 19:17:02 -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=sUpnvl+Yj9KEU3mKcGNzzTw/htftUGiWdVrQXy+Z+COyUEAfFnKpOxMZ6r4O/z9K+M yinRf1/NvRwVWOwgKvkxySlxvi37Fxs9mmfx+QNOwfvAe4ZdgnxLpr+mqSOjDsFpzrYl VTD78TMU2S1tCAWvC86zdsVrwT/+r2Z+08L9c= MIME-Version: 1.0 Received: by 10.231.33.73 with SMTP id g9mr4602938ibd.62.1279505821188; Sun, 18 Jul 2010 19:17:01 -0700 (PDT) Received: by 10.231.143.134 with HTTP; Sun, 18 Jul 2010 19:17:01 -0700 (PDT) In-Reply-To: References: X-Original-Date: Sun, 18 Jul 2010 19:17:01 -0700 X-Original-Message-ID: Subject: Re: [LML] Re: My airplane is running HOT From: Don Karich X-Original-To: Lancair Mailing List Content-Type: multipart/alternative; boundary=000325576116f5c596048bb429b7 --000325576116f5c596048bb429b7 Content-Type: text/plain; charset=ISO-8859-1 you could check the differential pressure before and after the plenum. should be about 5 inches of difference. If this is the case, i'd replace the vernotherm first. Mine was brand new and i did everything possi ble including adding a second oil cooler. my temps were 230 and the 2nd oil cooler brought them down a little but after changing the vernatherm i now have 180 to 205. It follows amb ient . I have a IO-540 from performance and my vernotherm was new. On Sun, Jul 18, 2010 at 10:47 AM, Craig Schulze wrote: > Hi Bryan, > > > > I have seen your airplane and I do not think you have an exit problem. You > have plenum from Chris Z, so you are great there. Can you verify for sure > that your probes are all calibrated and reading the proper temp? And on the > subject of fuel flow, my little 320 needs 12.5 gph or better in the climb > and sometimes it will still get hot when its this hot out. You should be 18 > gph on take off and at least 14 on climb. Keep your climb speed at 150kts or > better on these hot days too. What brand oil cooler are you using? I > switched mine to a dual pass Stewart Warner and it made a big difference. > Can you send me a picture of the bottom baffling around the cylinders? > Something could be off there. > > > > Craig Schulze > > > > > > *From:* Bill Bradburry [mailto:bbradburry@bellsouth.net] > *Sent:* Saturday, July 17, 2010 4:44 PM > *To:* lml@lancaironline.net > *Subject:* RE: [LML] Re: My airplane is running HOT > > > > Check the air pressure in flight above the cylinders and compare it to the > air pressure below the cylinders. You may find that you need to add a cowl > flap. At least you can see how the air is moving thru the cowl in flight. > That will go a long way to solving the problem. > > > > Bill B > > > ------------------------------ > > *From:* Lancair Mailing List [mailto:lml@lancaironline.net] *On Behalf Of > *Bryan Wullner > *Sent:* Saturday, July 17, 2010 2:41 PM > *To:* lml@lancaironline.net > *Subject:* [LML] Re: My airplane is running HOT > > > > Exit area is standard 360 cowling exit. Can see why it would behave any > different than any other lancair out there. Its actually a pretty good size > opening. > > > > > > On Fri, Jul 16, 2010 at 8:21 PM, wrote: > > Posted for Bryan Wullner : > > Anybody have any ideas or advice for the following situation: > > Lancair 360 with carbed 360 (180hp) engine. 475 hours on it about. Chrome > Cylinders. I have a Plenum cooling system and larger cowling inlets. > (Zavatson's cowling and plenum system) > Oil cooler is mounted at the front inlet. > Oil wont cool in climb and will go up to 230 and probably higher if not > stabilized. CHT's are all hot in climbs and will go to 440 no problem. > Cant > figure it out. > Motor runs great, compression good, boroscoped fine, mag timing good. All > leaks in plenum or baffling are sealed. > Probes were checked out ok. > > Only thing I haven't checked is the vernotherm. > > Thanks for any advice. > Bryan > > [How big are your cooling air outlets and where are they located? Sounds > like you're getting the cooling air in but not letting it out. Just a > thought. ] > > -- > > > > For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html > > > --000325576116f5c596048bb429b7 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable you could check the differential pressure before and after the plenum. shou= ld be about=A0 5 inches of difference. If this is the case,=A0 i'd repl= ace the vernotherm first. Mine was brand new and i did everything possi ble= including adding=A0 a second oil cooler. my temps were 230 and the 2nd oil= cooler brought them down a little but after changing the=A0 vernatherm i n= ow have 180 to 205. It follows amb ient . I have a IO-540 from performance = and my vernotherm was new.

On Sun, Jul 18, 2010 at 10:47 AM, Craig Schulze = <craig@skybolt.ne= t> wrote:

Hi B= ryan,

=A0<= /span>

I ha= ve seen your airplane and I do not think you have an exit problem.=A0 You h= ave plenum from Chris Z, so you are great there.=A0 Can you verify for sure= that your probes are all calibrated and reading the proper temp?=A0 And on= the subject of fuel flow, my little 320 needs 12.5 gph or better in the cl= imb and sometimes it will still get hot when its this hot out. You should b= e 18 gph on take off and at least 14 on climb. Keep your climb speed at 150= kts or better on these hot days too.=A0 What brand oil cooler are you using= ?=A0 I switched mine to a dual pass Stewart Warner and it made a big differ= ence.=A0 Can you send=A0 me a picture of the bottom baffling around the cyl= inders?=A0 Something could be off there.=A0

=A0<= /span>

Crai= g Schulze

=A0<= /span>

=A0<= /span>

From:<= span style=3D"FONT-SIZE: 10pt"> Bill Bradburry [mailto:bbradburry@bellsouth.net] Sent: Saturday, July 17, 2010 4:44 PM
To: lml@l= ancaironline.net
Subject: RE: [LML] Re: My airplane is runnin= g HOT

=A0

Check t= he air pressure in flight above the cylinders and compare it to the air pre= ssure below the cylinders.=A0 You may find that you need to add a cowl flap= .=A0 At least you can see how the air is moving thru the cowl in flight.=A0= That will go a long way to solving the problem.

=A0

Bill B<= /span>

=A0

From:<= span style=3D"FONT-SIZE: 10pt"> Lancair Mailing List [mailto:lml@lancaironline.net] = On Behalf Of Bryan Wullner
Sent: Saturday, July 17, 2010 2:41 PM
To: lml@lancaironline.net
= Subject: [LML] Re: My airplane is running HOT

=A0

Exit area is standard 360 cowling exit. Can see why = it would behave any different than any other lancair out there. Its actuall= y a pretty good size opening.

=A0

=A0

On Fri, Jul 16, 2010 at 8:21 PM, <marv@lancair.net> wrote:

Posted for Bryan Wullner <vonjet@gmail.com>:

=A0Anybody have any idea= s or advice for the following situation:
=A0
=A0Lancair 360 with carbed 360 (180hp) engine. 475 hours on it about= . Chrome
=A0Cylinders. I have a Plenum cooling system and larger cowling= inlets.
=A0(Zavatson's cowling and plenum system)
=A0Oil cooler = is mounted at the front inlet.
=A0Oil wont cool in climb and will go up to 230 and probably higher if not<= br>=A0stabilized. CHT's are all hot in climbs and will go to 440 no pro= blem. Cant
=A0figure it out.
=A0Motor runs great, compression good, b= oroscoped fine, mag timing good. All
=A0leaks in plenum or baffling are sealed.
=A0Probes were checked out ok= .
=A0
=A0Only thing I haven't checked is the vernotherm.
=A0=A0Thanks for any advice.
=A0Bryan

[How big are your cooling ai= r outlets and where are they located?=A0 Sounds like you're getting the= cooling air in but not letting it out.=A0 Just a thought.=A0 <Marv>= =A0 ]

--
=A0
For archives and unsub http:/=
/mail.lancaironline.net:81/lists/lml/List.html

=A0

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