There are two optimium temperatures: one is optimum for economy, the
other is optimum for power. The cooler of the two is the optimum for power.
higher pressure rad cap raises the boiling point and provides a higher
temperature to be reached before coolant is lost. The copper/brass vertical
flow radiators cannot be successfully operated at as high a pressure as the
crossflow. I'm not certain what the upper range of the aluminium alloy
vertical flow rads are.
Yep, once the engine starts to lose coolant it's only ever going to get
In a message dated 08/04/2010 21:50:36 GMT Daylight Time, firstname.lastname@example.org
It should be noted the factory didn't seem to think it was that big a deal
to have a heater, since it was an OPTION the first few years....
People tend to freak out about the temperature they run their spridget at,
and every so often this comes up. Keep in mind that the optimum
is actually somewhere above 212 degrees, or 100 c. The cooling system is
pressurized, and anti-freeze/coolant is added to raise the boiling point
sufficiently to make opperation at temperatures between 200 and 220
possible. What you need to avoid is temperatures above about 230 degrees,
as this will prompt the radiator cap to release pressure. Loss of coolant
is a much bigger concern than the slightly elevated opperating
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