71skylark to convert or not to convert?

Discussion in 'The Big Chill' started by Sabotage_666, Dec 26, 2010.

  1. Sabotage_666

    Sabotage_666 Guest

    Well everything but the drive belt is there. I can turn the compressor by hand it is pretty tuff tho, but I know NOTHING about ac systems. All I can tell u is it is all factory. Now since everything looks to be there should I convert it to the new stuff or can I keep it the same. REMEBER I NO NOTHIBG ABOUT AC SYSTEMS.
     
  2. Briz

    Briz Founders Club Member

    I'm guessing your trying to get the A/C working on your car. Unless you have a supply of R-12 your best bet would be to convert to 134-A. The compressor is supposed to be tight to turn when the clutch is engaged.
     
  3. V8Sky

    V8Sky "Scarlett"

    The compressor is shot in my '72 Skylark so I will eventually have it converted to 134-A for the ease of recharging in the future. It is not easy to find the R-12 anymore.
     
  4. Sabotage_666

    Sabotage_666 Guest

    Sooooo is there a kit? Or at least a step by step thread with pics?
     
  5. N360LL

    N360LL milehi71Stage1

    Give the local NAPA, etc a call and ask them for a R134 conversion kit. Then enquire about what a remanufactured compressor and clutch cost for your car. If they are hard to turn it may be that you are feeling the resistance of the clutch assembly or maybe something else. Once you have that information in hand then research an authorized A/C service facility that you can take your car to and have them evacuate the R-12 from the car. DO NOT leave the system evacuated for any extended period of time because that will only necessitate replacement or parts that you don't really have to if you are timely with the conversion.

    Now you are ready to convert the system. You will change all the O-rings in the system along with the rest of the valves and other parts that come in the kit. Now take the car back to the service facility and have them charge the system and check for functionality.

    The cost of the kits is very reasonable now and the cost of the other parts and labor is not unreasonable either.
     
  6. 64SkyConvert

    64SkyConvert 1964 300 ci

    2 more questions about this- I have to do the same thing to my '64 lark.

    1) Where could I find a complete conversion kit with O-rings?

    2) What are you using to lubricate the O-rings prior to installation?

    Thanks!
     
  7. lsrx101

    lsrx101 Well-Known Member

    This should get you started:
    http://www.autoacforum.com/messageview.cfm?catid=20&threadid=7927

    Your system uses a POA valve. It's the assembly connected to the big tube coming out of the AC box (accumulator suction line). The valve should be sent out to be tested and adjusted for R134a. That makes a world of difference when converting. http://www.classicautoair.com/GM_OEM_Parts_Valves.html

    You don't really need a "kit" to convert to R134a. They usually consist of 2 fittings, a can of PAG or Ester oil and a couple of cans of refrigerant. There is not near enough refrigerant in them to service your particular system and the fittings in the common (Interdynamics) kits are little more than scrap metal.
    Your A6 compressor has a sump, much like a small engine. The oil in the kit won't work for the A6.

    Here's a list of parts that you will need, at minimum. You may need other parts if you find damage or corrosion:
    -Approx 64oz of R134a.
    - Approx 20 ounces of pourable PAG refrigerant oil (10 to flush the compressor and 10 to fill the sump).
    -an Oring kit. (green HBNR orings)
    -Steel or Brass conversion fittings. (available at NAPA)
    -New receiver/dryer (The "can" in the AC line, usually near the condenser).

    Since you are new to AC systems, I suggest going to www.autoacforum.com and studying up before diving in. Use the search words POA and A6 for information specific to your system. There's a ton of info in the Tips, Tricks and FAQ section.

    The key so restoring a long dead A6/POA system successfully and converting it to R134a is to be meticulous, thorough and don't cut corners to try and save money.
    Remember that your system is almost 40 years old. You could need hoses, a compressor or other parts. I usually tell guys to budget $750-1000 for the repair, then be happy when it is less.

    Good Luck
     

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