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brown7373 · 03-17-2015, 11:24 AM

Does anyone make a parallel flow condenser for our trucks? I haven't checked in a couple years.

I got one for my 72 Cutlass and it made a MAJOR improvement in cooling. Also, had the POA recalibrated for 134A and I get 30-35 degree air from the vents with little loss at traffic lights.

Basically you flush out the system, replace all the O-rings with ones for 134A, add a new filter dryer, evacuate the system and recharge with 134A at 75-85% of the R12 amount. Don't pay attention to bubbles in the sight glass, because it doesn't work the same with 134A. I used my existing hoses, that were impregnated with the old R12 oil and have had no leaks. I also bought a Haynes A/C Manual, that helped me understand the whole A/C theory.

03-17-2015, 11:24 AM	#13
brown7373 Registered User Join Date: May 2011 Location: Fort Pierce, FL Posts: 430	Re: Converting factory AC to use R134a Does anyone make a parallel flow condenser for our trucks? I haven't checked in a couple years. I got one for my 72 Cutlass and it made a MAJOR improvement in cooling. Also, had the POA recalibrated for 134A and I get 30-35 degree air from the vents with little loss at traffic lights. Basically you flush out the system, replace all the O-rings with ones for 134A, add a new filter dryer, evacuate the system and recharge with 134A at 75-85% of the R12 amount. Don't pay attention to bubbles in the sight glass, because it doesn't work the same with 134A. I used my existing hoses, that were impregnated with the old R12 oil and have had no leaks. I also bought a Haynes A/C Manual, that helped me understand the whole A/C theory.