This is a multi-part message in MIME format.
--===============8163352777996721179==
boundary="------------I2dSqk4jRmO3AiKuQQFLXR1F"
Content-Language: en-US
This is a multi-part message in MIME format.
--------------I2dSqk4jRmO3AiKuQQFLXR1F
Content-Transfer-Encoding: 8bit
FWIW, our '80 MGB has the cap on the expansion tank. No cap on the
radiator. Ought to work the same as long as the hose between the two
can withstand the coolant temperature/pressure. There's a fitting on top
of the thermostat housing for topping off the cooling system.
Bob Haskell
Austin-Healey 3000 roadster registrar
On 10/11/25 13:03, Jim Ryan wrote:
> Hey Simon,
>
> No, the radiator cap stays on the radiator. Increased pressure in the
> radiator raises the boiling point. If the radiator gets hot enough for
> the pressure to release the cab then the overflow will go into the
> wall bottle. Once it cools down it's supposed to get pulled back into
> the radiator. Of course, this is a British car so theory and reality
> May differ. But you definitely want to leave a lady in the cop on the
> radiator.
>
>
>
> Jim Ryan
>
> ©¿©¬
>
>
> On Sat, Oct 11, 2025, 11:45â?¯AM Simon Lachlan via Healeys
> <healeys@autox.team.net> wrote:
>
> Forgive another stupid question but itâ??s sensible to be sureâ?¦â?¦â?¦.
>
> Am I right in assuming(!) that, if one fits an expansion tank, the
> standard cap is moved from the radiator to the expansion tank and
> is replaced by a blanking(?) cap ie one which has no spring, no
> means of relief etcetc? Seem logical to me but logichas let me
> down before.
>
> Simon
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>
> Archive: http://www.team.net/pipermail/healeys
> http://autox.team.net/archive/healeys
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/ryan@jimryan.com
>
>
> _______________________________________________
> Support Team.Nethttp://www.team.net/donate.html
> Suggested annual donation $12.75
>
> Archive:http://www.team.net/pipermail/healeys
> http://autox.team.net/archive/healeys
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net
>
--------------I2dSqk4jRmO3AiKuQQFLXR1F
Content-Transfer-Encoding: 8bit
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>FWIW, our '80 MGB has the cap on the expansion tank. No cap on
the radiator. Ought to work the same as long as the hose between
the two can withstand the coolant temperature/pressure. There's a
fitting on top of the thermostat housing for topping off the
cooling system.</p>
<pre class="moz-signature" cols="72">Bob Haskell
Austin-Healey 3000 roadster registrar</pre>
<div class="moz-cite-prefix">On 10/11/25 13:03, Jim Ryan wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAEajuYwx0w8WXXWtymdX9bFw5wOejJ1uuyTsRkwbVmLwY3-OeA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="auto">
<div>Hey Simon,</div>
<div dir="auto"><br>
</div>
<div dir="auto">No, the radiator cap stays on the radiator.
Increased pressure in the radiator raises the boiling point.
If the radiator gets hot enough for the pressure to release
the cab then the overflow will go into the wall bottle. Once
it cools down it's supposed to get pulled back into the
radiator. Of course, this is a British car so theory and
reality May differ. But you definitely want to leave a lady in
the cop on the radiator.</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div><br>
</div>
<div data-smartmail="gmail_signature">
<div dir="ltr">
<p style="font-size:12.8000001907349px"><span
style="font-size:10pt;color:navy">Jim Ryan</span></p>
<p style="font-size:12.8000001907349px">©¿©¬</p>
</div>
</div>
</div>
<br>
<div class="gmail_quote gmail_quote_container">
<div dir="ltr" class="gmail_attr">On Sat, Oct 11, 2025, 11:45â?¯AM
Simon Lachlan via Healeys <<a
href="mailto:healeys@autox.team.net"; moz-do-not-send="true"
class="moz-txt-link-freetext">healeys@autox.team.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p dir="LTR"><span lang="en-gb"><font face="Aptos">Forgive
another st</font></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"><font
face="Aptos">upid question but itâ??s sensible to be
sure���.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font face="Aptos">Am I
right in assuming(!) that, if one fits an
expan</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Aptos">sion tank, the standard
cap is moved from the radiator to the expansion tank
and is replaced by a blank</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Aptos">ing(?) cap ie one which
has no spring, no means of relief etcetc</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Aptos">? Seem logical to me but
logic</font></span><span lang="en-gb"></span><span
lang="en-gb"></span><span lang="en-gb"><font
face="Aptos"> has let me down before</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"><font face="Aptos">.</font></span></p>
<p dir="LTR"><span lang="en-gb"><font
face="Aptos">Simon</font></span><span
lang="en-gb"></span><span lang="en-gb"></span><span
lang="en-gb"></span></p>
</div>
_______________________________________________<br>
Support Team.Net <a href="http://www.team.net/donate.html";
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">http://www.team.net/donate.html</a><br>
Suggested annual donation $12.75<br>
<br>
Archive: <a href="http://www.team.net/pipermail/healeys";
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">http://www.team.net/pipermail/healeys</a>
<a href="http://autox.team.net/archive/healeys";
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">http://autox.team.net/archive/healeys</a><br>
<br>
<a href="mailto:Healeys@autox.team.net"; target="_blank"
rel="noreferrer" moz-do-not-send="true"
class="moz-txt-link-freetext">Healeys@autox.team.net</a><br>
<a href="http://autox.team.net/mailman/listinfo/healeys";
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">http://autox.team.net/mailman/listinfo/healeys</a><br>
<br>
Unsubscribe/Manage: <a
href="http://autox.team.net/mailman/options/healeys/ryan@jimryan.com";
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">http://autox.team.net/mailman/options/healeys/ryan@jimryan.com</a><br>
<br>
</blockquote>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre wrap=""
class="moz-quote-pre">_______________________________________________
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/pipermail/healeys";>http://www.team.net/pipermail/healeys</a>
<a class="moz-txt-link-freetext"
href="http://autox.team.net/archive/healeys";>http://autox.team.net/archive/healeys</a>
<a class="moz-txt-link-abbreviated"
href="mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a>
<a class="moz-txt-link-freetext"
href="http://autox.team.net/mailman/listinfo/healeys";>http://autox.team.net/mailman/listinfo/healeys</a>
</pre>
</blockquote>
</body>
</html>
--------------I2dSqk4jRmO3AiKuQQFLXR1F--
--===============8163352777996721179==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Archive: http://www.team.net/pipermail/healeys
http://autox.team.net/archive/healeys
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============8163352777996721179==--
|