[Healeys] Coolant bypass port in the head - 6-cyl

[Alan Seigrist]

I don't know if this has ever been answered before, but where does the
little bypass port begin?

What parts of the head does that bypass come in contact with?

When do you want to cover the port with a sleeve (when coolant is hot or
cold?)

I ask because the old bellows style thermostat will cover the bypass port
when the thermostat opens

then I have another wax thermostat and the sleeve actually cover the bypass
when it is cold, and doesn't cover it when the thermostat opens.... so it
works exact opposite to the old bellows style thermostat.

confused....

Cheers,

Alan
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