[Healeys] Heater query

[Michael Salter]

Actually Bob, as an aside, the thread on the handle is actually 12- 32 ...
the only 12 - 32 thread on a Healey as far as I'm  aware.
I know you absolutely couldn't continue with life as is without that
incredibly important nugget of information. 🤣🤣🤣

M


On Mon., Jul. 10, 2023, 3:03 p.m. Bob Spidell, <bspidell at comcast.net> wrote:

> 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 at autox.team.net> wrote:
>
>> 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%.
>>
>> 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 warm….
>>
>> The more I think about this, the less I like the idea of turning that tap
>> off…..
>>
>> The tap does work, before you all shout at once!
>>
>> Simon
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