X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao02.cox.net ([68.230.241.37] verified) by logan.com (CommuniGate Pro SMTP 5.0.7) with ESMTP id 961726 for flyrotary@lancaironline.net; Tue, 31 Jan 2006 01:47:39 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.37; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao02.cox.net (InterMail vM.6.01.05.02 201-2131-123-102-20050715) with ESMTP id <20060131064440.SCSC17006.fed1rmmtao02.cox.net@BigAl> for ; Tue, 31 Jan 2006 01:44:40 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Small holes in Intake Date: Mon, 30 Jan 2006 22:47:03 -0800 Message-ID: <002801c62632$24ed7580$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0029_01C625EF.16CA3580" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0029_01C625EF.16CA3580 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Subject: [FlyRotary] Small holes in Intake =20 While working on the plane yesterday, I pulled some of the tape off the intake manifold area and discovered two little holes in the primary = injector area, on either side of the bolt hole. They go into the primary injector area, and there are matching holes on the stock manifold, that look like they are connected to a manifold vacuum line. =20 Question: Has anyone used these -- or did you just block them off with = the manifold gasket. I speculate that they are used to help give a puff of = air on the injection cycle. =20 I think that is exactly right, Bill; better distribution of fuel spray/vapor. My custom manifold blocks them off, as do most alternative manifolds. Apparently they are not an issue for the rpms we are interested in. =20 Al ------=_NextPart_000_0029_01C625EF.16CA3580 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Subject: [FlyRotary] Small holes in Intake

While working on the plane yesterday, I pulled some of the tape off the intake manifold area and discovered two little holes in the primary injector area, on either side = of the bolt hole. They go into the primary injector area, and there are = matching holes on the stock manifold, that look like they are connected to a manifold = vacuum line.

Question: Has anyone used = these -- or did you just block them off with the manifold gasket. I speculate = that they are used to help give a puff of air on the injection = cycle.

I think that is exactly right, = Bill; better distribution of fuel spray/vapor.

My custom manifold blocks them = off, as do most alternative manifolds. Apparently they are not an issue = for the rpms we are interested in.

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