X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 28 Nov 2013 16:55:07 -0500 Message-ID: X-Original-Return-Path: Received: from blu0-omc3-s18.blu0.hotmail.com ([65.55.116.93] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6618196 for lml@lancaironline.net; Thu, 28 Nov 2013 14:54:20 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.55.116.93; envelope-from=gary21sn@hotmail.com Received: from BLU172-DS14 ([65.55.116.73]) by blu0-omc3-s18.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Thu, 28 Nov 2013 11:53:46 -0800 X-TMN: [ZK+zZu4uNhhZ6yzkzei7K9Cp3Lm215sP] X-Originating-Email: [gary21sn@hotmail.com] X-Original-Message-ID: X-Original-Return-Path: gary21sn@hotmail.com From: "Gary Edwards" X-Original-To: "Lancair Mailing List" References: Subject: Re: Intake hose touching exhaust X-Original-Date: Thu, 28 Nov 2013 11:53:45 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0159_01CEEC30.7DAC9210" X-Priority: 3 X-MSMail-Priority: Normal In-Reply-To: X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V10.50.0019.1000 Seal-Send-Time: Thu, 28 Nov 2013 11:53:45 -0800 X-OriginalArrivalTime: 28 Nov 2013 19:53:46.0111 (UTC) FILETIME=[8C6470F0:01CEEC73] This is a multi-part message in MIME format. ------=_NextPart_000_0159_01CEEC30.7DAC9210 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20 On my installation, lowering the exhaust system any little bit would = create interference elsewhere on the right side of the engine, the front = at the sump and on the left with the intake tubes, as well as then = touching the bottom cowl at the left rear side. =20 Gary ----- Original Message -----=20 From: Matt=20 To: lml@lancaironline.net=20 Sent: Thursday, November 28, 2013 10:21 AM Subject: [LML] Re: Intake hose touching exhaust What about using a thicker style exhaust gasket to bring the exhaust = down that 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 = 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. =20 Gary LNC2 ----- Original Message -----=20 From: John Cooper=20 To: lml@lancaironline.net=20 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. Here's a wide-angle shot taken before I installed the intake tube and = hose: 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. ------=_NextPart_000_0159_01CEEC30.7DAC9210 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20
On my installation, lowering the exhaust system any little bit = would create=20 interference elsewhere on the right side of the engine, the front at the = sump=20 and on the left with the intake tubes, as well as then touching the = bottom cowl=20 at the left rear side.
 
Gary
-----=20 Original Message -----
From:=20 Matt=20
Sent:=20 Thursday, November 28, 2013 10:21 AM
Subject:=20 [LML] Re: Intake hose touching exhaust

What about using a thicker style exhaust gasket to bring the = exhaust down=20 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>=20 wrote:

=20 =20
John,
 
Same situation here with the 320 in the 235 cowl.  The = exhaust=20 pipe is very close to the intake tube stub on the sump on #2, so the = rubber=20 hose connection is even closer.  I ground down the rubber = connection=20 hose thinner there for a little more space.  An alternative is = to=20 remove the exhaust (a big job on this engine) and create more = clearance=20 via pipe massaging in that area.  With the exhaust pipe = going=20 thru above the intake tubes and below the bottom of the = cylinders for=20 bottom cowl clearance, space is a real premium for other items like = the=20 cylinder baffle safety wires, cht probes, oil return lines, = starter=20 cables, etc.
 
Gary
LNC2
-----=20 Original Message -----
From:=20 John=20 Cooper
Sent:=20 Wednesday, November 27, 2013 7:53 AM
Subject:=20 [LML] [LNC2] Intake hose touching exhaust

The #2 cylinder of my O-290-D2 has been a real = problem=20 child. While dealing with the impossible-to-reach inboard exhaust = flange=20 nut, I noticed that the intake hose is actually touching the header=20 wrap on the exhaust stack which runs below the intake tube, = and is=20 very close to touching the upper exhaust stack. This seems like a = recipe=20 for disaster. Has anyone else had this problem and if so, how did = you=20 solve it? Has anyone tried using silicone rubber hose or flexible = metal=20 hose? Does the exhaust stack need to be reworked? Any suggestions = would be=20 very appreciated.

<Intake Hose=20 Interference.jpg>

Here's a wide-angle shot taken before = I=20 installed the intake tube and=20 hose:
<mime-attachment.jpg>

P.S. If anybody was = wondering,=20 that aluminum flexible "hose" you see running along the top of the = oil=20 sump is The= rmo-Flex,=20 a flexible high-temperature heat shield which will hopefully = protect the=20 wiring to the starter and alternator. The insulation on the #2 = wiring to=20 the starter was actually discolored due to the heat in that=20 = area.
= ------=_NextPart_000_0159_01CEEC30.7DAC9210--