[Chrysler300] RE: "G" AC conversion

Ed,

You can definitely retain the original compressor, as long as it is in good operable condition. You can also find R12 and R12 drop in replacement gas if you look around and do some research. R12 is still the best way to go, as that is what the system was designed for and will yield the best results.

You can convert, but based on my research, you will not have the cooling ability that you would have with R12. You will get about 80%-90% the cooling that would be had with R12 if switched to R134a. The system should be flushed to clean it of the old mineral oil, pull a vacuum to both evacuate it and check for leaks, and then charge with R134a and the correct amount of ester oil. O- rings should be replaced, as well as the receiver-dryer for best results.

This needs to be done by a competent person, as the amount of refrigerant and oil are important, and you need to have the right equipment and knowledge to get it working property and assure that it is as leak proof as possible.

Changing the compressor brings in a whole bunch of new challenges that do not bring benefits that outweigh the negatives in my view.

Bob J

(Formally trained in refrigeration & A/C, but I don't do it for a living)

From: Ed Mikula [mailto:hopscotch76@xxxxxxxxxxx]
Sent: Friday, October 31, 2014 3:55 PM
To: rpjasin@xxxxxxxxxxx
Subject: "G" AC conversion

Has anyone been able to covert the old V style AC compressor to R134a Freon?

I am rebuilding an engine for a friend and he would like to get the AC working once the engine is back in the car.

Any recommendations?

He would prefer not to change the compressor, he would like to keep it as original as possible.

Thanks.