X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost05.isp.att.net ([204.127.217.105] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6008825 for flyrotary@lancaironline.net; Sat, 12 Jan 2013 10:34:13 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.217.105; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-148-45.mco.bellsouth.net[98.85.148.45]) by isp.att.net (frfwmhc05) with SMTP id <20130112153338H05008q2ale>; Sat, 12 Jan 2013 15:33:38 +0000 X-Originating-IP: [98.85.148.45] From: "Bill Bradburry" To: Subject: Another question about forced induction Date: Sat, 12 Jan 2013 10:33:38 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0019_01CDF0B0.48A3FF30" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac3w2jD/kTfuH7HCSrywvF11Hfr1IA== X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0019_01CDF0B0.48A3FF30 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Maybe I over think things but this has been bothering me. The injectors in the Renesis sit on a little rubber doughnut that makes a seal between them and the intake manifold. Under some vacuum, the rubber doughnut would be sucked down and probably make a seal. Even at WOT there would be a little suction and for sure, no positive pressure. I am not so sure that the doughnut would make a seal under 4 or 5 pounds of pressure. In fact, when you climbed to altitude, the pressure differential would be even higher. Close to 10 lbs at 10K feet. How would you effect a proper seal on these doughnuts under boost?? You could lose a lot of your hard earned pressure with a leak as large as these could be. Do turbo'ed 13Bs have a different method of securing the injectors than the Renesis? Bill B ------=_NextPart_000_0019_01CDF0B0.48A3FF30 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Maybe I over think things but this has been bothering = me.

 

The injectors in the Renesis sit on a little rubber = doughnut that makes a seal between them and the intake manifold.  Under some vacuum, the rubber doughnut would be sucked down and probably make a seal.  Even at WOT there would be a little suction and for sure, no = positive pressure.

I am not so sure that the doughnut would make a seal = under 4 or 5 pounds of pressure.  In fact, when you climbed to altitude, = the pressure differential would be even higher.  Close to 10 lbs at 10K feet.  How would you effect a proper seal on these doughnuts under = boost??

 

You could lose a lot of your hard earned pressure = with a leak as large as these could be.

 

Do turbo’ed 13Bs have a different method of = securing the injectors than the Renesis?

 

Bill B

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