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It will only draw the coolant back and forth from the expansion tank if =
the radiator cap is a sealed cap.=20
David Nock
healeydoc@sbcglobal.net
209 948 8767
www.britishcarspecialists.com
From: Michael Oritt=20
Sent: Tuesday, November 15, 2016 5:31 AM
To: Patrick & Caroline Quinn=20
Cc: Austin Healey=20
Subject: Re: [Healeys] Coolant Expansion Bottle
Patrick--
The system will draw coolant back into the system from the expansion =
tank only if the end of the hose is submerged in coolant, either because =
it enters the tank from the bottom or from the top in which case, as =
Kimo points out, the hose clamps must be tight so that the vacuum =
created within the radiator is preserved in order to draw liquid.
Best--Michael Oritt
On Mon, Nov 14, 2016 at 3:37 PM, Patrick & Caroline Quinn =
<p_cquinn@tpg.com.au> wrote:
G=E2=80=99day
I know the subject of fitting a coolant expansion bottle has been =
covered before, but this has a twist as it concerns a Healey and not an =
Austin-Healey.
Our Healey Duncan has its original cooling system that is =
unpressurised. It=E2=80=99s assisted by an electric fan in front of the =
radiator, but with our warmer climate it persists is dumping its coolant =
out through the overflow pipe.
The radiator cap is a screw on type and the overflow pipe exits the =
radiator header tank separately in front of the cap. Being unpressurised =
there is nothing to stop the hot and expanded coolant from exiting via =
the overflow pipe.
I am thinking of fitting a coolant expansion bottle but am wondering =
if this will work on an unpressurised system. It seems to me that it =
should not make any difference, because if the coolant cannot escape to =
the outside world when it expands then it should flow back into the =
radiator once it cools.
Any opinions?
Thanks
Patrick Quinn
Blue Mountains, Australia
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<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: #000000">
<DIV>It will only draw the coolant back and forth from the expansion =
tank if the=20
radiator cap is a sealed cap. </DIV>
<DIV> </DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: =
#000000">David=20
Nock<BR>healeydoc@sbcglobal.net<BR>209 948=20
8767<BR>www.britishcarspecialists.com</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 style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dmichael.oritt@gmail.com=20
href=3D"mailto:michael.oritt@gmail.com";>Michael Oritt</A> </DIV>
<DIV><B>Sent:</B> Tuesday, November 15, 2016 5:31 AM</DIV>
<DIV><B>To:</B> <A title=3Dp_cquinn@tpg.com.au=20
href=3D"mailto:p_cquinn@tpg.com.au";>Patrick & Caroline Quinn</A> =
</DIV>
<DIV><B>Cc:</B> <A title=3Dhealeys@autox.team.net=20
href=3D"mailto:healeys@autox.team.net";>Austin Healey</A> </DIV>
<DIV><B>Subject:</B> Re: [Healeys] Coolant Expansion =
Bottle</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>
<DIV class=3Dgmail_default style=3D"COLOR: #3333ff">Patrick--</DIV>
<DIV class=3Dgmail_default style=3D"COLOR: #3333ff"> </DIV>
<DIV class=3Dgmail_default style=3D"COLOR: #3333ff">The system will draw =
coolant=20
back into the system from the expansion tank only if the end of the hose =
is=20
submerged in coolant, either because it enters the tank from the bottom =
or from=20
the top in which case, as Kimo points out, the hose clamps must be tight =
so that=20
the vacuum created within the radiator is preserved in order to draw=20
liquid.</DIV>
<DIV class=3Dgmail_default style=3D"COLOR: #3333ff"> </DIV>
<DIV class=3Dgmail_default style=3D"COLOR: #3333ff">Best--Michael =
Oritt</DIV></DIV>
<DIV class=3Dgmail_extra>
<DIV> </DIV>
<DIV class=3Dgmail_quote>On Mon, Nov 14, 2016 at 3:37 PM, Patrick & =
Caroline=20
Quinn <SPAN dir=3Dltr><<A href=3D"mailto:p_cquinn@tpg.com.au"=20
target=3D_blank>p_cquinn@tpg.com.au</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc =
1px solid">
<DIV lang=3DEN-AU vlink=3D"purple" link=3D"blue">
<DIV class=3Dm_7435241687470160984WordSection1>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'>G=E2=80=99day<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New Roman","serif"'>I =
know the=20
subject of fitting a coolant expansion bottle has been covered before, =
but=20
this has a twist as it concerns a Healey and not an=20
Austin-Healey.<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New Roman","serif"'>Our =
Healey=20
Duncan has its original cooling system that is unpressurised. =
It=E2=80=99s assisted by=20
an electric fan in front of the radiator, but with our warmer climate =
it=20
persists is dumping its coolant out through the overflow=20
pipe.<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New Roman","serif"'>The =
radiator=20
cap is a screw on type and the overflow pipe exits the radiator header =
tank=20
separately in front of the cap. Being unpressurised there is nothing =
to stop=20
the hot and expanded coolant from exiting via the overflow=20
pipe.<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New Roman","serif"'>I am =
thinking=20
of fitting a coolant expansion bottle but am wondering if this will =
work on an=20
unpressurised system. It seems to me that it should not make any =
difference,=20
because if the coolant cannot escape to the outside world when it =
expands then=20
it should flow back into the radiator once it =
cools.<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New Roman","serif"'>Any=20
opinions?<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'>Thanks<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New =
Roman","serif"'>Patrick=20
Quinn<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Times New Roman","serif"'>Blue =
Mountains,=20
=
Australia<U></U><U></U></SPAN></P></DIV></DIV><BR>_______________________=
_______<WBR>_________________<BR>Support=20
Team.Net <A href=3D"http://www.team.net/donate.html"; rel=3Dnoreferrer=20
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