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Note the brass valve on the block is quite fragile and if it hasn't been
'exercised' recently it's likely stuck and you stand a good chance of
snapping-off the small handle if you manhandle it. Moss has the complete
valve at $150, and replacement handles are available. If it doesn't move
easily I recommend soaking with a good penetrant oil and carefully
applying some heat, and work it little-by-little (IIRC, the valve has
the 'OFF' direction embossed in the body). A 10/32 machine screw will
work as a handle in a pinch. IIRC, the valve has the 'OFF' direction
embossed in the body near the handle.
Both valves on the 100s are large and robust, though still can get stuck
due to corrosion.
On 7/10/2023 8:32 AM, Michael Salter wrote:
> Turning off the small valve on the side of the engine will only ensure
> that the heater is most definitely OFF and will have no other
> detrimental effects.
> The 100 has 2 such valves, one on the head and one on the water pump
> and I always run with both turned off. My car is usually in winter
> storage before it's cold enough to need the heater.
>
> M
>
> On Mon., Jul. 10, 2023, 10:41 a.m. Simon Lachlan via Healeys,
> <healeys@autox.team.net> wrote:
>
> I have a MkII BT7 with a normal Smithâ??s heater. Normal insofar as
> it never seems to be turned OFF 100% or ON 100%.
>
> We are in our summer(?!) at the moment and I was wondering about
> turning off the tap in the hose from the block that leads into the
> cabin for the heater.
>
> Would the heater box and/or its valve semi-dry out and fill with a
> mess of rusty crud?
>
> Would the engine run hotter as there was a little less water
> running through the system?
>
> Or would I find myself basking in cool luxury as I tootle off to
> the local boozer?
>
> Or, most likely, none of the above, especially the last one?!
>
> I did take the car on quite a long trip the other day (Le Mans
> Classic!!) and, once the heat had soaked through the insulation,
> we were quite warmâ?¦.
>
> The more I think about this, the less I like the idea of turning
> that tap offâ?¦..
>
> The tap does work, before you all shout at once!
>
> Simon
>
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Note the brass valve on the block is quite fragile and if it hasn't
been 'exercised' recently it's likely stuck and you stand a good
chance of snapping-off the small handle if you manhandle it. Moss
has the complete valve at $150, and replacement handles are
available. If it doesn't move easily I recommend soaking with a good
penetrant oil and carefully applying some heat, and work it
little-by-little (IIRC, the valve has the 'OFF' direction embossed
in the body). A 10/32 machine screw will work as a handle in a
pinch. IIRC, the valve has the 'OFF' direction embossed in the body
near the handle.<br>
<br>
Both valves on the 100s are large and robust, though still can get
stuck due to corrosion.<br>
<br>
<br>
<div class="moz-cite-prefix">On 7/10/2023 8:32 AM, Michael Salter
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAB3i7LK5+wLB4oxvyfAYsCzTEH81TUCFtgxtDCMeHH6LymD3wA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="auto">Turning off the small valve on the side of the
engine will only ensure that the heater is most definitely OFF
and will have no other detrimental effects.Â
<div dir="auto">The 100 has 2 such valves, one on the head and
one on the water pump and I always run with both turned off.
My car is usually in winter storage before it's cold enough to
need the heater.</div>
<div dir="auto"><br>
</div>
<div dir="auto">M</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon., Jul. 10, 2023, 10:41
a.m. 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 link="#0563C1" vlink="#954F72" lang="EN-GB">
<div class="m_7399484926794662424WordSection1">
<p class="MsoNormal">I have a MkII BT7 with a normal
Smithâ??s heater. Normal insofar as it never seems to be
turned OFF 100% or ON 100%.</p>
<p class="MsoNormal">We are in our summer(?!) at the
moment and I was wondering about turning off the tap in
the hose from the block that leads into the cabin for
the heater.</p>
<p class="MsoNormal">Would the heater box and/or its valve
semi-dry out and fill with a mess of rusty crud?</p>
<p class="MsoNormal">Would the engine run hotter as there
was a little less water running through the system?</p>
<p class="MsoNormal">Or would I find myself basking in
cool luxury as I tootle off to the local boozer?</p>
<p class="MsoNormal">Or, most likely, none of the above,
especially the last one?!</p>
<p class="MsoNormal">I did take the car on quite a long
trip the other day (Le Mans Classic!!) and, once the
heat had soaked through the insulation, we were quite
warmâ?¦.</p>
<p class="MsoNormal">The more I think about this, the less
I like the idea of turning that tap offâ?¦..</p>
<p class="MsoNormal">The tap does work, before you all
shout at once!</p>
<p class="MsoNormal">Simon</p>
</div>
</div>
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</blockquote>
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<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre class="moz-quote-pre"
wrap="">_______________________________________________
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/pipermail/healeys";>http://www.team.net/pipermail/healeys</a>
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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>
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