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You sure to get lots of opinions and advice on this one ... !
Here is my take:
The concern with cold running, particularly if the engine has cooled =
overnight is the oil temperature; no matter what engine oil you use its =
lubrication properties are degraded when running below operating temps; =
think trying to circulate treacle. In the 60=E2=80=99s there was always =
the concern of breaking rings if the engine was revved too soon when =
cold; I don=E2=80=99t think that our AH have this problem.
The water temp is not the perfect indicator of oil temp but it is all we =
have; water temp can be very different to oil temp particularly when =
starting from cold.=20
So in my opinion it is best is to =E2=80=9Cgently=E2=80=9D start driving =
as soon as it is running stably and not likely to stall on you. Gentle =
means no revving through the gears and particularly no labouring in the =
wrong gear (sleeve bearings); the engine will warm up quicker when =
driving rather than sitting idling as the losses are higher when it is =
doing some work.
Also, I have always tried to shut off the choke as soon as possible, as =
running with too rich a mixture has the possibility of diluting the =
cylinder wall lubrication when you most need it.
rg
=20
From: i erbs=20
Sent: Wednesday, February 10, 2016 8:11 AM
To: Ahealey help=20
Subject: [Healeys] start up Temp
So it has been many years since I have had a working choke in my car.=20
I know I need to have oil pressure before I head out on a cold morning, =
but what temp should I wait for before driving off? I have just held the =
jokes up by hand until the car reached 190 degrees and ran without the =
choke.=20
It has been in the 30s in the morning, but is is warming up. Today was =
42. So at what temp is OK to start driving the car? It has been over 7 =
years since I have had the car on the road and I drove it sparingly =
then. I now try to drive it as much as possible.
Ira Erbs=20
Portland,OR
1959 BN4 100-6
with BT7 engine and disk brakes.
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_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
http://autox.team.net/mailman/options/healeys/roggrace@telus.net
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No virus found in this message.
Checked by AVG - www.avg.com
Version: 2015.0.6189 / Virus Database: 4522/11597 - Release Date: =
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<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Comic Sans MS'; COLOR: =
#000000">
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Comic Sans MS'; COLOR: =
#000000">
<DIV>You sure to get lots of opinions and advice on this one ... !</DIV>
<DIV>Here is my take:</DIV>
<DIV>The concern with cold running, particularly if the engine has =
cooled=20
overnight is the oil temperature; no matter what engine oil you use its=20
lubrication properties are degraded when running below operating temps; =
think=20
trying to circulate treacle. In the 60=E2=80=99s there was always the =
concern of=20
breaking rings if the engine was revved too soon when cold; I =
don=E2=80=99t think that=20
our AH have this problem.</DIV>
<DIV>The water temp is not the perfect indicator of oil temp but it is =
all we=20
have; water temp can be very different to oil temp particularly when =
starting=20
from cold. </DIV>
<DIV>So in my opinion it is best is to =E2=80=9Cgently=E2=80=9D start =
driving as soon as it is=20
running stably and not likely to stall on you. Gentle means no revving =
through=20
the gears and particularly no labouring in the wrong gear (sleeve =
bearings); the=20
engine will warm up quicker when driving rather than sitting idling as =
the=20
losses are higher when it is doing some work.</DIV>
<DIV>Also, I have always tried to shut off the choke as soon as =
possible, as=20
running with too rich a mixture has the possibility of diluting the =
cylinder=20
wall lubrication when you most need it.</DIV>
<DIV>rg</DIV>
<DIV> </DIV>
<DIV> =20
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'></DIV>
<DIV style=3D"FONT: 10pt tahoma">
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Deyera3000@gmail.com=20
href=3D"mailto:eyera3000@gmail.com";>i erbs</A> </DIV>
<DIV><B>Sent:</B> Wednesday, February 10, 2016 8:11 AM</DIV>
<DIV><B>To:</B> <A title=3Dhealeys@autox.team.net=20
href=3D"mailto:healeys@autox.team.net";>Ahealey help</A> </DIV>
<DIV><B>Subject:</B> [Healeys] start up Temp</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>So it has been many years since I have had a working =
choke in my=20
car.=20
<DIV>I know I need to have oil pressure before I head out on a cold =
morning, but=20
what temp should I wait for before driving off? I have just held the =
jokes up by=20
hand until the car reached 190 degrees and ran without the choke. </DIV>
<DIV>It has been in the 30s in the morning, but is is warming up. Today =
was 42.=20
So at what temp is OK to start driving the car? It has been over 7 years =
since I=20
have had the car on the road and I drove it sparingly then. I now =
try to=20
drive it as much as possible.</DIV>
<DIV>
<DIV> </DIV>
<DIV>
<DIV class=3Dgmail_signature>
<DIV dir=3Dltr>
<DIV>
<DIV dir=3Dltr>Ira Erbs=20
<DIV>Portland,OR</DIV>
<DIV>1959 BN4 100-6</DIV>
<DIV>with BT7 engine and disk=20
brakes.</DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV>
<P>
<HR>
_______________________________________________<BR>Support Team.Net=20
$12.75<BR>Archive: http://www.team.net/archive<BR>Forums:=20
http://www.team.net/forums<BR><BR>Healeys@autox.team.net<BR>http://autox.=
team.net/mailman/listinfo/healeys<BR><BR>Unsubscribe/Manage:=20
http://autox.team.net/mailman/options/healeys/roggrace@telus.net<BR><BR>
<P>
<HR>
<A></A>
<P align=3Dleft color=3D"#000000" avgcert??>No virus found in this=20
message.<BR>Checked by AVG - <A=20
href=3D"http://www.avg.com";>www.avg.com</A><BR>Version: 2015.0.6189 / =
Virus=20
Database: 4522/11597 - Release Date:=20
02/10/16</P></DIV></DIV></DIV></DIV></DIV></DIV></BODY></HTML>
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Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
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