X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2434698 for flyrotary@lancaironline.net; Fri, 26 Oct 2007 17:20:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([24.74.103.61]) by cdptpa-omta03.mail.rr.com with SMTP id <20071026212006.TJQU3242.cdptpa-omta03.mail.rr.com@edward2> for ; Fri, 26 Oct 2007 21:20:06 +0000 Message-ID: <003401c81815$b92ca5f0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] MAP port location Date: Fri, 26 Oct 2007 17:18:15 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0031_01C817F4.31D857A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 This is a multi-part message in MIME format. ------=_NextPart_000_0031_01C817F4.31D857A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable It'll work just about at any location. But, you generally want a = location that will reflect the total engine condition rather than say = one runner. Besides there are some fairly substantial pulsation in the = runners. I prefer to have the sensor in the plenum immediately after = the throttle body, but out of the way of the air flow at this point the = pressure changes in your plenum probably reflect the over all (average) = of what is going on in your runners. The pressure wave travels at the = speed of sound whereas the air mass travels less than 400 ft/sec (much = less in most cases), so where ever you put the sensor - even down my the = ports, it won't matter timing wise.=20 However, a location where the pulsation are damped is where I would put = it. In the plenum after the throttle body and out of the direct air = flow path. On the other hand, I have used the ports on the stock lower = manifold (tying together the primary and secondary ports with a "T" so = as to better get an average). =20 Some folks have used a dense air filter/fuel filter? to damp out the = pulsation, so if you are going to run your manifold like off a tube near = a port, that is what I would try as well. Ed Ed =20 ----- Original Message -----=20 From: Bobby J. Hughes=20 To: Rotary motors in aircraft=20 Sent: Friday, October 26, 2007 10:49 AM Subject: [FlyRotary] MAP port location What is the best location for MAP ports on the intake. Close to the = engine or further away? I have the modified Renesis lower manifold that = has two ports installed. Are these the best locations for the EC2 or = should I place new ones further back in the upper manifold? Thanks, Bobby J Hughes -------------------------------------------------------------------------= ----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0031_01C817F4.31D857A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
It'll work just about at any location.  = But, you=20 generally want a location that will reflect the total engine condition = rather=20 than say one runner.  Besides there are some fairly substantial = pulsation=20 in the runners.  I prefer to have the sensor in the plenum = immediately=20 after the throttle body, but out of the way of the air flow at this = point the=20 pressure changes in your plenum probably reflect the over all (average) = of what=20 is going on in your runners.  The pressure wave travels at the = speed of=20 sound whereas the air mass travels less than 400 ft/sec (much less in = most=20 cases), so where ever you put the sensor - even down my the ports, it = won't=20 matter timing wise.
 
However, a location where the pulsation are = damped is=20 where I would put it.  In the plenum after the throttle body and = out of the=20 direct air flow path.  On the other hand, I have used the ports on = the=20 stock lower manifold (tying together the primary and secondary ports = with a "T"=20 so as to better get an average). 
 
Some folks have used a dense air filter/fuel = filter? to=20 damp out the pulsation, so if you are going to run your manifold like = off a tube=20 near a port, that is what I would try as well.
 
Ed
 
 Ed
 
 
 ----- Original Message -----=20
From:=20 Bobby J. = Hughes=20
Sent: Friday, October 26, 2007 = 10:49=20 AM
Subject: [FlyRotary] MAP port=20 location

What is the best location for MAP ports on = the=20 intake. Close to the engine or further away? I have the modified = Renesis lower=20 manifold that has two ports installed. Are these the best = locations for the EC2 or should I place new = ones=20 further back in the upper manifold?
 
Thanks,
 
 
Bobby J=20 Hughes
 


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