R 12 clima gas for bird 1963

[ines]

hi all, do some one know what was the fill quantity of the R12 clima gas in those times(1963)? i need that to know, because my Mecanic will fill in R 134 gas and for this changement is important to know the quantity (a heard about 965 til 1360 grams).
thank you lots
kind regards
ines

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[Special Ed]

My ‘64 takes 40oz, according to the shop manual

 

[ines]

My ‘64 takes 40oz, according to the shop manual

My ‘64 takes 40oz, according to the shop manual

hi special ed, thanks a lot for your quick replay. your mail made reflect that i am in possesion of a shop manual !!!!!! 😵for the 63 bullet bird is between 23/3 to 3 pounds. send regards from switzerland 😀

 

[Mrjagrock]

As a former A/C Kit manufacturer, The R134 will be less than the R12- How much, i do not know.

 

[ines]

As a former A/C Kit manufacturer, The R134 will be less than the R12- How much, i do not know.

thanks for this helping short information. my Mecanic told me that i it maybe +/- 600 to 800 grams

 

[Mrjagrock]

We, typically, would use approximately 14-18 oz of R134. However, you will se little improvement unless you change out several costly things on your system.

 

[Tom Alpers]

hi special ed, thanks a lot for your quick replay. your mail made reflect that i am in possesion of a shop manual !!!!!! 😵for the 63 bullet bird is between 23/3 to 3 pounds. send regards from switzerland 😀

Hopefully your mechanic if familiar with converting R12 to 134a. It will take about 80% of the weight of R12 so if it needed 3 pounds of R12 it will take 2.4 pounds of 134a. That's a ballpark. If the system has NEVER been converted and has never been flushed or otherwise had the original lubricating oil changed be aware that the oil that was used in R12 systems is not "compatible" with 134a. By not compatible it mainly means the oil doesn't really mix with the refrigerate and get carried around the system. In the most basic conversion kits back 30 years ago they would come with a oil charge that added some kind of compatible oil, not a full charge, just a "top up" amount, that was added to the system to provide a small amount of oil that would get carried around. Some people said that would sort of work but didn't really do the job in the long term. I don't know. There are several kinds of oil, you would need to verify which kinds are compatible with the old, I don't think all the new ones are. Also need to check to see which viscosity to use. They also thought it was necessary to replace the condenser with a larger one. That is probably true in theory but in practice most people did not change it and the systems were fine. When I had a 64 I converted it to 134a. The things I changed was the condenser because I didn't want to trust the oil Receiver/Dryer which was mounted on the old one Reusing a 50+ R/D seemed risky. Replacements were expensive so I removed the old condenser and R/D and replaced it with a new one that would fit and fabricated mounts. I added a new aftermarket type R/D in the system mounted on the fender liner. I did not flush the system. Don't recall now if I drained the compressor or not. I added as much new compatible oil as the various instructions/suggestions I found on the internet said to add. When I was done the system worked adequately in Arizona heat. I don't know how well they worked when new so have no way to judge if it was as good, better or worse then original. I didn't keep the car long term so don't know how it held up long term.