X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 21 Jun 2005 11:12:21 -0400 Message-ID: X-Original-Return-Path: Received: from imo-d03.mx.aol.com ([205.188.157.35] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1008867 for lml@lancaironline.net; Tue, 21 Jun 2005 10:54:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.35; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-d03.mx.aol.com (mail_out_v38_r1.7.) id q.d6.28a40f70 (14374) for ; Tue, 21 Jun 2005 10:53:10 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Tue, 21 Jun 2005 10:53:06 EDT Subject: Re: [LML] Re: Induction air filter X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1119365586" X-Mailer: 9.0 Security Edition for Windows sub 5009 -------------------------------1119365586 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 6/21/2005 7:58:29 A.M. Central Standard Time, marv@lancaironline.net writes: Do not discount the effect that high IAT has on narrowing the detonation margin. That seems like a step backwards from intercoolers Walter, We are specifically talking about normally aspirated IO 320/360 Lancairs with a forward mounted throttle body. Maybe there is a 100F air temperature rise ( BTW, a loss of only about 10% power). Those that have carbureted engines (O 320/360) and turn on carb heat see a much greater rise in inlet air temp since the air is heated by the exhaust pipe. What is the large margin that has been reduced a little? How is it related to Compression Ratio? We need facts, not generalizations. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) -------------------------------1119365586 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 6/21/2005 7:58:29 A.M. Central Standard Time,=20 marv@lancaironline.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Do not=20 discount the effect that high IAT has on narrowing the=20 detonation
margin.  That seems like a step backwards from=20 intercoolers
Walter,
 
We are specifically talking about normally aspirated IO 320/360 Lancair= s=20 with a forward mounted throttle body.  Maybe there is a 100F air=20 temperature rise ( BTW, a loss of only about 10% power).  Those that ha= ve=20 carbureted engines (O 320/360) and turn on carb heat see a much greater= =20 rise in inlet air temp since the air is heated by the exhaust pipe. 
 
What is the large margin that has been reduced a little?  How is i= t=20 related to Compression Ratio?  We need facts, not generalizations.=20
 
Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)



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