R-12 charge

Discussion in '1978 - 1981 Specific' started by lorozco, Sep 11, 2019.

  1. lorozco

    lorozco New Member

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    Does anyone the R-12 charge capacity for a 1979 Z28?
     
  2. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    Mine is an 80 but I believe it should be identical for capacity.
    As far as I know, only the compressor mounting bolts changed between 79 and 80.
    (They went to metric bolts in 80.)

    Anyway...
    The factory "Harrison" sticker on my evaporator case says 3.25 lbs of R12.
    (52 ounces)

    That's two 12 oz. cans and two 14 oz. cans.
    You won't get every last bit out but slightly under-charged is better than over-charged.

    Have you totally flushed/vacuumed the system and at least replaced the O-rings?

    You also need to replace the accumulator/drier and the orifice tube
    on systems this old to have any hope of it working well.

    Don't waste your money on R12 if you aren't going to do it right!

    Good Luck!
     
  3. twestrup

    twestrup Member Lifetime Gold Member

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    Plus R-12 is illegal
     
  4. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    It's not "illegal".
    I have IMACA certification which allows me to buy it.

    It's no longer manufactured in this country but it is still available through various sources and it's still produced by our south-of-the-border neighbors.
     
  5. Gary S

    Gary S Administrator Lifetime Gold Member

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    R12 is about as illegal as an old Camaro. Both are outdated, no longer legal to make in the US, and very nice to have. :)

    And, both are more expensive than they were 20 years ago.
     
  6. ol' grouch

    ol' grouch Veteran Member

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    It's still around. I've got about a case and a half of it out in the garage. I started to sell some at a swap meet but When I sold a can for $15 and the guy turned around and sold it for $30, but when I asked $30, I was way too high. I just got tired of the foolishness and it's not eating anything in the garage.
     
  7. lorozco

    lorozco New Member

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    Great idea!
    Anyone know where to get an OEM dryer? Not the one with the tube kit.

    Thanks,
     
  8. 70 Proof

    70 Proof Veteran Member

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    EBAY is a good source for R12


    $40 + Free Shipping

    R12.jpg
     
    Last edited: Sep 12, 2019
  9. lorozco

    lorozco New Member

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    Thank you. A friend gave me 5-LBS. I would like to install a stock receiver dryer. However, I cant find one. I have purchased new hose through air products. I just need that receiver dryer.
     
  10. Burd

    Burd Veteran Member Lifetime Gold Member

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    638ED06D-812A-49EF-9DD1-A813652C57F6.jpeg

    Stop by my place. I got everything.
     

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