what is this for?

for those with Series MM sidevalve cars produced between September 1948 and February 1953
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tortron
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what is this for?

Post by tortron »

the large hex bolt on the "head" located between the back bolts, what is that for? :-?
Image

forgive the poor photo (wow is that really how nasty my engine bay is/was im sure its not that bad :lol: )
mike.perry
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Post by mike.perry »

That is the blanking plug which can be replaced by the heater tap if you have the aftermarket heater kit.
tortron
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Post by tortron »

ahh really
little use without a waterpump tho (i have fitted a "heater" for cars without a pump, basicly a fan which ducts air from near the radiator)

suitable place for a temperature gauge or no?
mike.perry
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Post by mike.perry »

Possibly if you can get the right size adaptor, or have one made.
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tortron
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Post by tortron »

Just a follow up on this.
a temperature switch - i.e. for an electric fan will fit this hole perfectly
you can then hide the wires along the firewall - making for a nice tidy install
RobThomas
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Post by RobThomas »

The adaptor for a capilliry gauge from any later Morris or Midget will fit and allow the use of a cap gauge temp unit.
mike.perry
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Post by mike.perry »

The capillary gauge is more "period", trouble is the capillary is fragile and there is usually enough on the gauge to go 3 times around the engine bay.
An electric gauge with a sensor is easier but you do need a voltage stabiliser. I'm still working on the last bit.
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callyspoy
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Post by callyspoy »

i agree with the capillary length thing, bit of a pain, but that said...dad spent many hours trying to sort out electric gauge, and just couldn't get it to work! rather odd! and yes, he bought a stabiliser, and then bought a new type from maplins too...all rather odd! so he went capillary too!
i did break one of mine though...that was an expensive mishap!!
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