Remember that modern iron runs hotter than the old stuff. This improves
emissions. On a 90's car, the fully warm temp should probably bounce
between 195 F and 215 F or so with about 230 F being the high limit.
Most American late iron use a higher pressure cap than older cars to
allow a good margin of safety at these higher temps- I think around 15
psi. I am not sure about Morgans but I am sure that someone knows.
One more thing, I would recommend against returning said candy
thermometer to the kitchen drawer. Our fudge recipe calls for butter or
margarine, not Mobil 1.
Regards,
Bill Eastman
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