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Thanks so much Al G, you too Georges. I was not familiar with that type of
system. That also seems to support some of Ians statements. I'll head to Volvo
area next time I go to wrecking yard. That's why I couldn't understand Georges
statement.
-al wick
I'm sorry Georges, I don't
understand your statement.
All auto cooling sys I'm familiar
with have rad cap on top of radiator. They are designed to have no air in the
cooling system. Shortly after you start up the car, coolant flows
from cap 14psi valve to overflow bottle. This pressure increase is
entirely due to coolant expansion due to heat. When you shut car off, the
pressure drop in the radiator draws in coolant from cap 1 psi valve
connected to overflow bottle back into the radiator. Thus the radiator
is always full to top.
Al
W.
Mercedes,
Volkswagon, Volvo (to name a few) have/had radiators with no cap, connected to
an expansion tank that you fill about half way. The expansion tank –
higher than the top of the rad - has the 13-15 psi
cap.
FWIW;
Al
G.
-al wick
Artificial intelligence in
cockpit, Cozy IV powered by stock Subaru 2.5
N9032U 200+ hours on
engine/airframe from Portland, Oregon
Prop construct, Subaru install, Risk
assessment, Glass panel design
info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html
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