[Healeys] Engine Temperature Info ??

[warthodson at aol.com]

Qualifier: This is from memory! The sleeved t'stat that BCS sells is a 160
degree t'stat. But as pointed out this is not an issue,
except if you are driving on cool days. probably somewhere below 70 degrees
F.
Gary




  The sleeve was intended to rise and block the coolant bypass in the
head as the thermostat opened with increasing coolant temperature.  The
bypass is there to allow the coolant to flow back through the head instead
of to the radiator for faster engine warmup.  Running without a thermostat
would allow this bypass channel to function all the time.  The factory parts
manual identifies a "blanking sleeve" to be used instead of the thermostat
for hot countries because in the absence of the thermostat the blanking
sleeve closes off the bypass.

As long as the gauge is accurate, 190 deg. at cruise on a warm day is
normal.  Using a lower temp thermostat can cause the engine to run too cold
in winter.  I believe 160 degrees is too cold.

Steve Byers