X-Virus-Scanned: clean according to Sophos on Logan.com X-PolluStop: No license found, only first 5 messages were scanned Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 26 Jun 2006 01:24:36 -0400 Message-ID: X-Original-Return-Path: Received: from vms046pub.verizon.net ([206.46.252.46] verified) by logan.com (CommuniGate Pro SMTP 5.1c.1) with ESMTP id 1206108 for lml@lancaironline.net; Mon, 26 Jun 2006 00:18:27 -0400 Received: from jacky0da39824a ([71.111.158.24]) by vms046.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0J1G007F19AM25B3@vms046.mailsrvcs.net> for lml@lancaironline.net; Sun, 25 Jun 2006 23:18:25 -0500 (CDT) X-Original-Date: Sun, 25 Jun 2006 21:18:18 -0700 From: "Tom Gourley" Subject: Straight bore vs choke X-Original-To: "Lancair Mailing List" Reply-to: "Tom Gourley" X-Original-Message-id: <001b01c698d7$8de56710$660610ac@jacky0da39824a> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 X-Mailer: Microsoft Outlook Express 6.00.2900.2869 Content-type: multipart/alternative; boundary="----=_NextPart_000_0018_01C6989C.E0DD56C0" X-Priority: 3 X-MSMail-priority: Normal References: This is a multi-part message in MIME format. ------=_NextPart_000_0018_01C6989C.E0DD56C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I recently ran across the website for Chuck Ney Enterpreses = (http://www.chuckneyent.com/) and read where he advocates straight bore = cylinders instead of tapered, or choked, cylinders. I'm assuming the = engine manufacturers have good reasons for designing taper into their = cylinders (variable temperature expansion characteristics over the = length of the cylinder?) Mr. Ney, on the other hand, claims a vast = amount of experience indicating better performance and longevity by = boring the cylinders straight. I know we have some very knowledgeable = engine people on the LML so I'd like to get their take on straight vs = choke. Tom Gourley Legacy builder ------=_NextPart_000_0018_01C6989C.E0DD56C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I recently ran across the website for = Chuck Ney=20 Enterpreses (http://www.chuckneyent.com/) = and read=20 where he advocates straight bore cylinders instead of tapered, or = choked,=20 cylinders.  I'm assuming the engine manufacturers have good reasons = for=20 designing taper into their cylinders (variable temperature expansion=20 characteristics over the length of the cylinder?) Mr. Ney, on the other = hand,=20 claims a vast amount of experience indicating better performance and = longevity=20 by boring the cylinders straight.  I know we have some very = knowledgeable=20 engine people on the LML so I'd like to get their take on straight vs=20 choke.
 
Tom Gourley
Legacy builder
 
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