Quote:
Originally Posted by mnmasotto
I had previously installed a Rennaire A/C system with the desert duty front condensor. The only thing I left out was the Procooler. I used a standard Porsche dryer instead. Don't ask why, my mechanic did this without my knowledge.
I stayed with R12 and measured the vent temps vs. outside temps on multiple occassions. With SoCal temps of 90 degrees or greater I never recorded a vent temp less than 52 degrees. With outiside ambient temps between 80-90 degrees I recorded vent temps as low as 46 degrees.
I recently replaced my factory Porsche rear decklid condensor (two row) with a new Griffiths rear condensor(three row). The fit and finish of the unit was excellent. The system was then recharged with R12 to the same high and low side temps by the same A/C shop. The shop said my system was only a few ounces low.
When I picked up the car the outside ambient temperature was 91 degrees. My vent temps stayed a 39-40 degrees the entire trip home. I had one measurement of 42 degrees when I was stuck in stop and go traffic for a short period.
I used a standard rod type? temperatue gauge which was stuck in the vent throughout the tests. The accuracy of this $10 gauge was confirmed with a $75 laser temp gauge.
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Can't believe that changing out your old rear deck condenser would have had that much of an impact in reducing vent temps unless it had some blockages. Sounds like recharging with the proper amount of refridgerant was the real driver here. In any event, congrats on the results.
