X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from simmts6-srv.bellnexxia.net ([206.47.199.164] verified) by logan.com (CommuniGate Pro SMTP 5.2.8) with ESMTP id 3181629 for flyrotary@lancaironline.net; Sun, 21 Sep 2008 20:45:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=206.47.199.164; envelope-from=lacombr@nbnet.nb.ca Received: from simip11-ac.srvr.bell.ca ([206.47.199.91]) by simmts6-srv.bellnexxia.net (InterMail vM.5.01.06.13 201-253-122-130-113-20050324) with ESMTP id <20080922004415.XNKC1669.simmts6-srv.bellnexxia.net@simip11-ac.srvr.bell.ca> for ; Sun, 21 Sep 2008 20:44:15 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgEHAFuF1kiOp1U4/2dsb2JhbACCLy6HfwapWIFm Received: from fctnnbsc14w-142167085056.pppoe-dynamic.nb.aliant.net (HELO PCdeRita) ([142.167.85.56]) by alconsout.srvr.bell.ca with SMTP; 21 Sep 2008 20:51:37 -0400 Message-ID: <01DADB87D3174BF2B910CCAB2CA2B419@PCdeRita> From: "Rino" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Manifold vacuum gauge Date: Sun, 21 Sep 2008 21:44:06 -0300 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0044_01C91C33.2C06E910" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6000.16480 X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6000.16669 This is a multi-part message in MIME format. ------=_NextPart_000_0044_01C91C33.2C06E910 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I installed a pulse chamber because the pressure reading on the EM2 was = jumping around too much. The pulse chamber solved that. Rino Lacombe Today I sorted out the wiring and everything is now working. The only = problem is that the manifold vacuum gauge is reading backwards. I tried = changing the plus-minus wires around on the back of the gauge and it = reads nothing, even with vacuum applied. The question is what happens = if I switch the power and ground wires around, does that do anything = besides blow the fuse or the gauge. Will run the engine again tomorrow = with the ole steam gauge and try and get a start on the EC2 tuning.=20 One other question, does the vacuum lines to the EC2 need some kind = of pulse chamber, like a small fuel filter or orifice in each line. = JohnD ------=_NextPart_000_0044_01C91C33.2C06E910 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I installed a pulse chamber because the = pressure=20 reading on the EM2 was jumping around too much.   The pulse = chamber=20 solved that.
 
Rino Lacombe

Today I sorted out the wiring and = everything is=20 now working.  The only problem is that the manifold vacuum gauge = is=20 reading backwards.  I tried changing the plus-minus wires around = on the=20 back of the gauge and it reads nothing, even with vacuum = applied.  The=20 question is what happens if I switch the power and ground wires = around, does=20 that do anything besides blow the fuse or the gauge.  Will run = the engine=20 again tomorrow with the ole steam gauge and try and get a start on the = EC2=20 tuning. 
 
 One other question, does the = vacuum lines=20 to the EC2 need some kind of pulse chamber, like a small fuel filter = or=20 orifice in each line.  = JohnD
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