Quote:
Originally Posted by keithbkeller
I did a ac update to my 81 911 SC Targa to a Chinese Sanden type compressor with new barrier hoses and replaced my rear condenser and put a new recv/dryer on it. Now I have vacuumed it and recharged it with 48 oz of 134r refrigerant and am getting cool ac but not cold. I have 32 psi in the low side and 30 psi at the high side at 1600 rpm with the rear engine cover up. When I close it and take it out for a drive on a 81 degree F day, I am seeing 55f on my thermometer inside the front vent. So here is my question: Why is my high side pressure so low and my low side so high? And then the 2nd part of my question; Why is it working at all if the pressures are so screwed up? This compressor only has the little air nozzles on it (see picture)and they are the same size. Take a look and see what you think? Also the high side tube sweats cold condensation and the compressor runs smooth. Thanks! http://forums.pelicanparts.com/ultimate/confused.gif 
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"...same size...." Both are low side pressure fittings?