Glad to see this A/C Forum! I'm installing a Vintage Air system in my '65 Wildcat. I have purchased their 134a kit. However, I am told it could go either way (134a vs. R-12) as long as you change the oil (PAG vs. ?). I guess I still have the choice. I know people knock the 134a systems.The stuff works gret in my other cars (ie those cars designed for it). My question is: If this is a new system designed for 134a, would there be a significant difference between 134a and R-12. I have one of Vintage Airs largest condensors with their highly touted "technologicaly advanced design"o No: . There is plenty of acerage in front of the radiator. I have gone to great lengths to use a 7 blade clutched fan, properly mounted shroud, and properly mounted condensor. I have a foam tape sealing the shroud to the back of the radiator and then sealing the condensor to the front of radiator. The airflow should be very good. I'm leaning 134a because the Sanden compressor is labeled 134a and already has the PAG oil in it. What say Ye! Rick
I'm not too knowledgable about aftermarket systems, but I'd be inclined to think that if you used R-12 in a system that was designed for R-134, you could risk having freeze up problems. o No: If I were you, I'd opt for the 134 and see what happens. If you end up having to dump the 134, it's a heck of a lot cheaper to waste than R-12 is if you can even find some. Incidentally, propane based refrigerants mix with ALL types of oils and flushing for that purpose is not necessary.
I'm gonna do this one by the book (i.e. according to Vintage Air). We'll see what kind of vent temps I get. If it is unacceptable, then I'll try the other refrigerants. I've been in a late '60s Camaro and Firebird with the systems and it was "OK". I don't know what refrigerant they were using. Judging the way the components ate up space under my dash and hood, I'll bet it was tough to get a system of any size in those cars. I would think my setup would be as efficient as possible, biggest condensor and biggest underdash unit. We'll see. Thanks, Rick
