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Discussion in 'Troubleshooting & Diagnosis' started by GPN, Aug 6, 2017.
having R12 added to my 1979 Z. Can anyone tell me the capacity of the system?
There should be a sticker on the components somewhere if you're using factory parts. I have capacity tables somewhere but it may take a while to find them. Are you sure you're getting R-12 and not converting to R-134? R-12 hasn't been available for years since Duponts patent expired and they got it outlawed. Unless you're getting some stuff that's been sitting, it isn't R-12.
Service manual say's 3 LBS 4 OZ.
Great Thank you
The Harrison sticker on my evaporator case says: 3.25 lbs.
A little difficult to get here but R12 is still made in Mexico.
Tnx, I'll check for sticker. Am fortunate to have some real R12.
goid to know. Tnx
Mine is an '80 Berlinetta but I'm pretty sure the system is the same as your '79 Z28 except for a couple of metric bolts for the compressor mount on my '80.
Bandit confirmed the capacity from the manual.
Good Job, Mike!
If it was a 79 Z28, RS... I don't know anything about them.
I was buying R12 for my old corvette on craigslist for $10 a can. It's still out there and since most systems have been converted people are selling it cheap.
I have had a 30lb pig of R12 in my garage for almost 15 years. Probably havent used 6 pounds out of it in that time. I always think about selling it but you never know when an old system might need a recharge.
If you are converting to R134a it will take less freon, if I remember correctly when I converted the 79 trans Am it took 2.4 pounds.