<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. <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">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 lang="EN-GB" link="#0563C1" vlink="#954F72"><div class="m_7399484926794662424WordSection1"><p class="MsoNormal">I have a MkII BT7 with a normal Smith’s heater. Normal insofar as it never seems to be turned OFF 100% or ON 100%.<u></u><u></u></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.<u></u><u></u></p><p class="MsoNormal">Would the heater box and/or its valve semi-dry out and fill with a mess of rusty crud?<u></u><u></u></p><p class="MsoNormal">Would the engine run hotter as there was a little less water running through the system?<u></u><u></u></p><p class="MsoNormal">Or would I find myself basking in cool luxury as I tootle off to the local boozer?<u></u><u></u></p><p class="MsoNormal">Or, most likely, none of the above, especially the last one?!<u></u><u></u></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 warm….<u></u><u></u></p><p class="MsoNormal">The more I think about this, the less I like the idea of turning that tap off…..<u></u><u></u></p><p class="MsoNormal">The tap does work, before you all shout at once!<u></u><u></u></p><p class="MsoNormal">Simon<u></u><u></u></p></div></div>_______________________________________________<br>
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