Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Sun, 03 Apr 2005 18:30:50 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m18.mx.aol.com ([64.12.138.208] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 853657 for lml@lancaironline.net; Sun, 03 Apr 2005 18:26:21 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.208; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m18.mx.aol.com (mail_out_v37_r5.33.) id q.9f.5c2be1b0 (3972) for ; Sun, 3 Apr 2005 18:25:24 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: <9f.5c2be1b0.2f81c754@aol.com> X-Original-Date: Sun, 3 Apr 2005 18:25:24 EDT Subject: Re: [LML] Oil and Warming up X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1112567124" X-Mailer: 9.0 Security Edition for Windows sub 5000 -------------------------------1112567124 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 4/3/2005 4:30:18 P.M. Central Daylight Time, mjrav@comcast.net writes: ......The cooling effects of the oil are more limited with less flow. There is a squirt tube that directs an oil on the bottom of each piston and excess flow to the valve mechanism helps cool the cylinder heads. I know the oil carries a fair portion of the cooling load but have no data or numbers. Mark, Hmmmm.... I can't find the reference on this "vacation" laptop, but I seem to remember that for all the heat (BTUs) generated by an air-cooled internal combustion engine about 8-10% is removed by oil, 10-12% by cooling air and the rest goes out to the exhaust pipe(s). I guess that makes the oil contribute about 40% of the cooling that we have some control over (assuming A/F mixture is at best power). Implication for me: Maybe I could reduce cooling drag by improving (read make larger) my oil cooler????????????? For you: Forgetaboutit! Grayhawk "Precision" measurement is useful for some of the people some of the time. -------------------------------1112567124 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 4/3/2005 4:30:18 P.M. Central Daylight Time,=20 mjrav@comcast.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>

......The cooling effects of the oil are=20= more=20 limited with less flow. There is a squirt tube that directs an oil o= n=20 the bottom of each piston and excess flow to the valve mechanism helps coo= l=20 the cylinder heads. I know the oil carries a fair portion= of=20 the cooling load but have no data or=20 numbers.

Mark,

Hmmmm.... I can't find the reference on this "vacation" laptop, b= ut I=20 seem to remember that for all the heat (BTUs) generated by an air-coole= d=20 internal combustion engine about 8-10% is removed by oil, 10-12% by cooling=20= air=20 and the rest goes out to the exhaust pipe(s). I guess that makes=20= the=20 oil contribute about 40% of the cooling that we have some control over (assu= ming=20 A/F mixture is at best power).

Implication for me: Maybe I could reduce cooling drag by improvin= g=20 (read make larger) my oil cooler????????????? For you:=20 Forgetaboutit!

Grayhawk

"Precision" measurement is useful for some of the people some of t= he=20 time.

-------------------------------1112567124--