Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Thu, 31 Mar 2005 15:32:42 -0500 Message-ID: X-Original-Return-Path: Received: from [198.36.178.141] (HELO stoel.com) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 850470 for lml@lancaironline.net; Thu, 31 Mar 2005 15:03:13 -0500 Received-SPF: none receiver=logan.com; client-ip=198.36.178.141; envelope-from=CSLEWIS@stoel.com Received: from sea-mx1.stoel.com ([172.17.103.4]) by gateway1.stoel.com with ESMTP id <334102>; Thu, 31 Mar 2005 12:12:51 -0800 X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C5362C.8F94CA28" Subject: RE: [LML] Re: Oil Temperature for take off X-Original-Date: Thu, 31 Mar 2005 12:02:26 -0800 X-Original-Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] Re: Alternative Engines Thread-Index: AcU2KUkijo55JqRZTu6EergzjBeXuQAAhDQg From: "Lewis III, Charles S." X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01C5362C.8F94CA28 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable With respect to the question about oil type and oil temperature at take = off, for what it's worth (very little), I use straight 50W in the = LyCon-massaged IO-550 in my Legacy at LyCon's recommendation, and I = always get the oil temperature over 80 deg F before run up and over 100 = deg F before take off. In my climate (Orcas Island, WA), the straight = 50W works well year round. =20 Carl Lewis Legacy L2K-203 N14CL -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of = Craig Berland Sent: Thursday, March 31, 2005 11:19 AM To: Lancair Mailing List Subject: [LML] Re: Alternative Engines "What is a decent oil temperature for take off. The viscosity changes = by roughly 2 orders of magnitude between start up and steady state = cruise. Is there some viscosity/temperature threshold that should be = observed to prevent damage at take off power? Also, is there a = particular reason for not mixing brands/viscosity? I tend to run multi = weight in the winter and straight weight the rest of the year(same = brand). There is obviously be some mixing during the change over. Chris = Zavatson" =20 Decent oil temp for take off? Chris, I think it is important on this = site to say "I don't know" when it is so. Here's what I do know. In our = IMSA road race car we ran 50W oil for a while. We wanted the oil temp at = 150 deg F on the pace lap. This was impossible on cool days. The concern = is two-fold. One, oil to the valve train and two, oil to the connecting = rods at high (8500) RPM. The other concern is actually blowing up the = oil filter if oil pressure gets too high. I've seen this happen. This = obviously would be very bad on take off. I would think that over 100 deg = F should be OK with 50W oil, but I don't know for sure. The reason I = don't mix oil brands is due to its negative affect on oil consumption. = Changing from straight 50W to 20W50 is not nearly as big of a concern, = in my opinion. However my experience says you will get better oil = consumption while running the 50W oil as well as better lubrication and = therefore less engine wear. You know, I used to get in a big hurry = during run-up, I'm not sure why, just seemed like I should get the = engine back to idle. Now I do the run-up lean and let the engine warm up = a little...no big hurry. I know the question was, when do you pull the = throttle back and request clearance for departure...hope this helps. Craig Berland=20 ------_=_NextPart_001_01C5362C.8F94CA28 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
With=20 respect to the question about oil type and oil temperature at take off, = for what=20 it's worth (very little), I use straight 50W in the = LyCon-massaged IO-550=20 in my Legacy at LyCon's recommendation, and I always get the oil = temperature=20 over 80 deg F before run up and over 100 deg F before take off.  In = my=20 climate (Orcas Island, WA), the straight 50W works well year=20 round.
 
Carl=20 Lewis
Legacy=20 L2K-203
N14CL
-----Original Message-----
From: Lancair Mailing = List=20 [mailto:lml@lancaironline.net]On Behalf Of Craig=20 Berland
Sent: Thursday, March 31, 2005 11:19 = AM
To:=20 Lancair Mailing List
Subject: [LML] Re: Alternative=20 Engines

"What is a=20 decent oil temperature for take off.  The viscosity changes by = roughly 2=20 orders of magnitude between start up and steady state cruise.  Is = there=20 some viscosity/temperature threshold that should be observed to = prevent damage=20 at take off power? Also, is there a particular reason for not mixing=20 brands/viscosity?  I tend to run multi weight in the winter and = straight=20 weight the rest of the year(same brand).  There is obviously be = some=20 mixing during the change over. Chris Zavatson"
 
Decent oil=20 temp for take off? Chris, I think it is important on this site to say = "I don't=20 know" when it is so. Here's what I do know. In our IMSA road race car = we ran=20 50W oil for a while. We wanted the oil temp at 150 deg F on the = pace lap.=20 This was impossible on cool days. The concern is two-fold. One, oil to = the=20 valve train and two, oil to the connecting rods at high (8500) RPM. = The other=20 concern is actually blowing up the oil filter if oil pressure gets too = high.=20 I've seen this happen. This obviously would be very bad on take off. I = would=20 think that over 100 deg F should be OK with 50W oil, but I don't know = for=20 sure. The reason I don't mix oil brands is due to its negative affect = on oil=20 consumption. Changing from straight 50W to 20W50 is not nearly as = big of=20 a concern, in my opinion. However my experience says you will get = better oil=20 consumption while running the 50W oil as well as better lubrication = and=20 therefore less engine wear. You know, I used to get in a big hurry = during=20 run-up, I'm not sure why, just seemed like I should get the engine = back to=20 idle. Now I do the run-up lean and let the engine warm up a = little...no big=20 hurry. I know the question was, when do you pull the throttle back and = request=20 clearance for departure...hope this helps.
Craig=20 Berland 

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