Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.93.67.84] verified) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2624810 for flyrotary@lancaironline.net; Sun, 05 Oct 2003 09:30:24 -0400 Received: from o7y6b5 (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-03.southeast.rr.com (8.12.10/8.12.2) with SMTP id h95DS5W0013348 for ; Sun, 5 Oct 2003 09:28:06 -0400 (EDT) Message-ID: <004201c38b44$87bc2fc0$1702a8c0@WorkGroup> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] intake port Date: Sun, 5 Oct 2003 09:28:14 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003F_01C38B23.00783520" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_003F_01C38B23.00783520 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yes, Perry, there is a path from the exhaust ports to the EGT ports you = are referring to. If you look closely at the exhaust port in the rotor housing you will = notice a small (approx 3/8-1/2" dia hole in the insert/housing. (I am = doing this from memory so bear with me). This diverts some exhaust gas = over to iron side housing (as best I can remember - I think on the turbo = blocks it diverts it to the center housing) and the holes iniron housing = takes it down into the intake manifold through the holes you have = showing as unblocked.=20 I blocked mine by using some Pottery clay and filling in the area in the = aluminum housing under the area of the hole in the exhaust insert. The = heat hardens the pottery clay and no EGT gas. I learned this from one = of the Rotary Racing crowd - but again can't remember where. There are = of course other ways to block it. I don't know how much exhaust gas or = heat you might get from the hole, but I would definitedly block it off = somehow rather than having exhaust gas under the cowl. Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ----- Original Message -----=20 From: Perry Casson=20 To: Rotary motors in aircraft=20 Sent: Saturday, October 04, 2003 11:46 PM Subject: [FlyRotary] intake port Hi All, I fired up my engine today to check to see if my header was sealing = better using silicon as a gasket as per Lynn Hanover's suggestion when I = noticed there is exhaust gas coming from ports just below the outboard = intake ports (see photo). I had not plugged these when I hacked up the = original 6 port intake manifold assuming there was some type of external = EG valve that routed gas here in it original form. Is there really an = internal passage from the exhaust ports to these ports and what has the = rest of you done to block them off? I think I'll put some 0.030 = stainless sheet between the intake and the block unless someone has a = better idea. Looks like I'll be making it down to Tracy's fly-in (flying commercial = :-( ) and I'm looking forward to putting some faces to the names. Thanks Perry Casson Glastar/13B http://eaa154.dhs.org/perry -------------------------------------------------------------------------= ----- >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_003F_01C38B23.00783520 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yes, Perry, there is a path from the = exhaust ports=20 to the EGT ports you are referring to.
If you look closely at the exhaust port = in the=20 rotor housing you will notice a small (approx 3/8-1/2" dia hole in the=20 insert/housing.  (I am doing this from memory so bear with = me).  This=20 diverts some exhaust gas over to iron side housing (as best I can = remember - I=20 think on the turbo blocks it diverts it to the center housing) and the = holes=20 iniron housing takes it down into the intake manifold through the holes = you have=20 showing as unblocked.
 
I blocked mine by using some Pottery = clay and=20 filling in the area in the aluminum housing under the area of =  the=20 hole in the exhaust insert.  The heat hardens the pottery clay and = no EGT=20 gas.  I learned this from one of the Rotary Racing crowd - but = again can't=20 remember where.  There are of course other ways to block it.  = I don't=20 know how much exhaust gas or heat you might get from the hole, but = I would=20 definitedly block it off somehow rather than having exhaust gas under = the=20 cowl.
 
 
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
----- Original Message -----
From:=20 Perry=20 Casson
Sent: Saturday, October 04, = 2003 11:46=20 PM
Subject: [FlyRotary] intake = port

Hi All,
 
I fired up my engine today to check = to see if my=20 header was sealing better using silicon as a gasket as per Lynn = Hanover's=20 suggestion when I noticed there is exhaust gas coming from ports just = below=20 the outboard intake ports (see photo).  I had not plugged these = when I=20 hacked up the original 6 port intake manifold assuming there was some = type of=20 external EG valve that routed gas here in it original form.  Is = there=20 really an internal passage from the exhaust ports to these ports and = what has=20 the rest of you done to block them off?  I think=20 I'll put some 0.030 stainless sheet between the intake = and the=20 block unless someone has a better idea.
 
Looks like I'll be making it down to = Tracy's=20 fly-in (flying commercial :-(  ) and I'm looking forward to = putting=20 some faces to the names.
 
 
Thanks
 
Perry Casson  = Glastar/13B
http://eaa154.dhs.org/perry
 
 

>>  Homepage: =20 http://www.flyrotary.com/
>>  Archive:  =20 = http://lancaironline.net/lists/flyrotary/List.html
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