Quote:
Originally Posted by kuehl
Ok, that might be a theory. So prove the theory!
Assuming a stock 911 (SC or Car):
1) What is the average high side and low side pressure when the system is not running; you walk out to the car in the morning, you have not started it up.
Equal. Depends on OAT.
Outside is 55F, R-134a, by the book...18-28 PSI.
It's 90F outside. What are the pressures?
R-134a, by the book, 50-60 PSI.
2) What is the average high side and low side pressure when the system is operating (engine running, compressor engaged), with either R12 or R134a, say at idle,
90F outside?
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What does "AVERAGE" high side or low side pressures have to do with this discussion?
I could go to the "book" to give you those answers assuming a fully functioning system.
Answer these:
Why do many systems of this era have refrigerant relief valves that "trigger" at pressures as high as 450 PSI..?
What events, system failures, were expectant that led to the incorporation of these pressure relief valves..??
What prevents, if anything, these same conditions from occurring in our Porsche's..?