X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 28 Nov 2013 13:21:29 -0500 Message-ID: X-Original-Return-Path: Received: from nm49-vm9.bullet.mail.gq1.yahoo.com ([67.195.87.239] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with SMTP id 6617180 for lml@lancaironline.net; Wed, 27 Nov 2013 16:33:00 -0500 Received-SPF: none receiver=logan.com; client-ip=67.195.87.239; envelope-from=mattinlosangeles@yahoo.com Received: from [216.39.60.183] by nm49.bullet.mail.gq1.yahoo.com with NNFMP; 27 Nov 2013 21:32:23 -0000 Received: from [208.71.42.194] by tm19.bullet.mail.gq1.yahoo.com with NNFMP; 27 Nov 2013 21:32:23 -0000 Received: from [127.0.0.1] by smtp205.mail.gq1.yahoo.com with NNFMP; 27 Nov 2013 21:32:23 -0000 X-Yahoo-Newman-Id: 962609.7195.bm@smtp205.mail.gq1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: xXqB9aYVM1lb4gh_OX2F9xadxJuJRHqpz91ZkjE9gbAsTiB RH91PwZON6ySP8CNJVUSdc2HGmTVbHLqAkwjU8LzP6ou1ZVtRCxzdzEL2TLX vHcE1mGYOjS1ar4JtYha3L4mUOdjtNwNYS3xN2s2.MCUXII5vT3lZTtPRwWz B5pYv2LBQV0fVhza3K5sa.xdXgOer5N72hd7VdA4mtZZQos.kc1k1UlUsKmw n_2M3gKgdzAsJbCSCN8xgVZoRG6vzdLVZn82jzUogSzZscdqIhVEVzlWG69i pwTfv9CyyOBV1CKgAz0h8e_Onjqo8oWk7zeOlF3IN7xmolSN7f3jdZCun93. VsGJNFcIETIyqKlH04lYgxbi.bM.wcbwSL1IgVTGMT9LM_BsuEX0MNXZmYEp ip5VFxFF_DvFtok5GOE6WCneVWWTQjjgS2awUbZVBPlGcpdRR4SW50iM1Iss LPtKb6yIC6NoJaDy9XMDtTr8tprJiUTKz0ux_aFSgimmnr4NVo8XREWGfS4Q AC1Mkiw0VK9NL455jrBaKY2fLo5BfrnmleN6I0gQ9Z.dLkrRiZkCS8VAx5wb r1eesEeKw28nQCh_Op69OHnBrzO4RE__l53c3V51QwUomMd4fkK8TKfiX2jc VeNp4NyBqadTywizvvxnYUdrHWUfanvIECFtgSmS2ssXKKUUIdmLfO3FId0b 80tM- X-Yahoo-SMTP: qSoeC7GswBDtLKiCbjlydJsHEudRg9StIzMfLuM- X-Rocket-Received: from [10.207.185.252] (mattinlosangeles@198.228.210.7 with ) by smtp205.mail.gq1.yahoo.com with SMTP; 27 Nov 2013 13:32:23 -0800 PST References: Mime-Version: 1.0 (1.0) In-Reply-To: Content-Type: multipart/alternative; boundary=Apple-Mail-631B90A7-DFE5-45A7-80D2-67A87FBDFD52 Content-Transfer-Encoding: 7bit X-Original-Message-Id: <295F427B-1584-4EA7-99C5-EC5B198F9014@yahoo.com> X-Original-Cc: "lml@lancaironline.net" X-Mailer: iPhone Mail (11B511) From: Matt Subject: Re: [LML] Re: Intake hose touching exhaust X-Original-Date: Wed, 27 Nov 2013 13:32:19 -0800 X-Original-To: Lancair Mailing List --Apple-Mail-631B90A7-DFE5-45A7-80D2-67A87FBDFD52 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable What about using a thicker style exhaust gasket to bring the exhaust down th= at little extra bit on all 4 of them.=20 Matt Sent from my iPhone > On Nov 27, 2013, at 11:13 AM, "Gary Edwards" wrote:= >=20 > John, > =20 > Same situation here with the 320 in the 235 cowl. The exhaust pipe is ver= y close to the intake tube stub on the sump on #2, so the rubber hose connec= tion is even closer. I ground down the rubber connection hose thinner there= for a little more space. An alternative is to remove the exhaust (a big jo= b on this engine) and create more clearance via pipe massaging in that area.= With the exhaust pipe going thru above the intake tubes and below the bott= om of the cylinders for bottom cowl clearance, space is a real premium for o= ther items like the cylinder baffle safety wires, cht probes, oil return lin= es, starter cables, etc. > =20 > Gary > LNC2 > ----- Original Message ----- > From: John Cooper > To: lml@lancaironline.net > Sent: Wednesday, November 27, 2013 7:53 AM > Subject: [LML] [LNC2] Intake hose touching exhaust >=20 > The #2 cylinder of my O-290-D2 has been a real problem child. While dealin= g with the impossible-to-reach inboard exhaust flange nut, I noticed that th= e intake hose is actually touching the header wrap on the exhaust stack whic= h runs below the intake tube, and is very close to touching the upper exhaus= t stack. This seems like a recipe for disaster. Has anyone else had this pro= blem and if so, how did you solve it? Has anyone tried using silicone rubber= hose or flexible metal hose? Does the exhaust stack need to be reworked? An= y suggestions would be very appreciated. >=20 > >=20 > Here's a wide-angle shot taken before I installed the intake tube and hose= : > >=20 > P.S. If anybody was wondering, that aluminum flexible "hose" you see runni= ng along the top of the oil sump is Thermo-Flex, a flexible high-temperature= heat shield which will hopefully protect the wiring to the starter and alte= rnator. The insulation on the #2 wiring to the starter was actually discolor= ed due to the heat in that area. --Apple-Mail-631B90A7-DFE5-45A7-80D2-67A87FBDFD52 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
What about using a thicker style exhaust gasket to bring the exhaust down that little extra bit on all 4 of them. 

Matt

Sent from my iPhone

On Nov 27, 2013, at 11:13 AM, "Gary Edwards" <gary21sn@hotmail.com> wrote:

John,
 
Same situation here with the 320 in the 235 cowl.  The exhaust pipe is very close to the intake tube stub on the sump on #2, so the rubber hose connection is even closer.  I ground down the rubber connection hose thinner there for a little more space.  An alternative is to remove the exhaust (a big job on this engine) and create more clearance via pipe massaging in that area.  With the exhaust pipe going thru above the intake tubes and below the bottom of the cylinders for bottom cowl clearance, space is a real premium for other items like the cylinder baffle safety wires, cht probes, oil return lines, starter cables, etc.
 
Gary
LNC2
----- Original Message -----
Sent: Wednesday, November 27, 2013 7:53 AM
Subject: [LML] [LNC2] Intake hose touching exhaust

The #2 cylinder of my O-290-D2 has been a real problem child. While dealing with the impossible-to-reach inboard exhaust flange nut, I noticed that the intake hose is actually touching the header wrap on the exhaust stack which runs below the intake tube, and is very close to touching the upper exhaust stack. This seems like a recipe for disaster. Has anyone else had this problem and if so, how did you solve it? Has anyone tried using silicone rubber hose or flexible metal hose? Does the exhaust stack need to be reworked? Any suggestions would be very appreciated.

<Intake Hose Interference.jpg>

Here's a wide-angle shot taken before I installed the intake tube and hose:
<mime-attachment.jpg>

P.S. If anybody was wondering, that aluminum flexible "hose" you see running along the top of the oil sump is Thermo-Flex, a flexible high-temperature heat shield which will hopefully protect the wiring to the starter and alternator. The insulation on the #2 wiring to the starter was actually discolored due to the heat in that area.
--Apple-Mail-631B90A7-DFE5-45A7-80D2-67A87FBDFD52--