So the cooling questions come with March, hey?
The instant going from hot to real hot tells me
pressure leaves the system. The pressurized cooling
system has a higher boiling point by virtue of that
compression.
Once you get to a certain amount of pressure, if
there is no integrity, boiling occurs with permission
to go with the laws of nature. The boiling point of
plain water is what - 212F? For every pound of pressure,
that number increases.
It can be 225F and not boil, but drop pressure and
the water has to boil, bigtime. Can Paul or some
engineer-type give us examples? Maybe put this on
a website?
How the boiling point is altered by a 40-50%
coolant additive and water wetter. How many degrees
this harder-to boil mixture can withstand if compressed?
How bout it? We could even add a list of causes that
mean inefficiency, like lean mixture, loose fan belt (yes!),
bad gasket, less water flow around #4 if the htr valve is shut.
Rotten WP impeller, stuck thermostat, cramped hose,
filthy radiator outside or in. Let us count the ways!!!
The fan points the "right way", even when mounted backwards.
If the curvature built into each blade isn't acting to scoop
the air rather than push at it, it won't move much air.
I shudda bean a engin-ear.
David McCartney / Captain Rapture.
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