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A/C recharge R-134a or R-12?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 87superblaze, Feb 26, 2002.

  1. 87superblaze

    87superblaze 1/2 ton status

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    What type of air conditioning fluid do I recharge my system with. I was thinking of buying a Self-Charging kit from Walmart. It's an 87 Blazer and since I did a frame off restore on it, the original stickers aren't under the hood.

    Is it R-134a or R-12. If it's R-12, can I just use R-134a instead if there is an advantage to using R-134a.

    My Truck <a target="_blank" href=http://www.community.webshots.com/user/nicksm79>http://www.community.webshots.com/user/nicksm79</a>
     
  2. txbluethunder

    txbluethunder 1/2 ton status

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    1. I"m pretty sure that your running r-12. They didn't switch till the 90's.
    2. You cannot purchase r-12 over the counter anymore.
    3. The cost of recharging r-12 is usually MORE expensive then switching to r-134a and charging.

    r-12 is around 50 bucks a pound.
    r-134a i think is around 10 bucks a pound.

    1986 K5 Blazer
    Tired Stock 305/700R4/3.08
    F:2.5" Procomp Springs/RS9000
    R:1.5" Procomp Leaf/2" Procomp Block/RS9000
    Working on getting 33's
     
  3. Headbanger

    Headbanger 1/2 ton status

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    In the long run you're better off buying the retrofit kit to change from the r-12 which yours has, to the r-134a it will save you money and as r-12 quanities run dry(they do not produce it anymore) you'll end up having to change it anyway. The change over is fairly easy and worth it!
     
  4. 87superblaze

    87superblaze 1/2 ton status

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    Thanks for telling me. I'll definetly go with the R-134a then. It will be cheaper since the A/c system is completely empty after the restoration.

    My Truck <a target="_blank" href=http://www.community.webshots.com/user/nicksm79>http://www.community.webshots.com/user/nicksm79</a>
     
  5. Hossbaby50

    Hossbaby50 3/4 ton status

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    Ya, when I worked at a Chevy dealership, they would sell the R-12 in 10-15 (don't remember exactly) pound cylinders, for $750 per cylinder. The price on R-12 will never get any cheaper, it will just keep going up. Switch to R-134A and be done with it.

    My Chevy isn't broken, its just out of gas.
     
  6. creampuff90k5

    creampuff90k5 1/2 ton status

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    I did the 134a conversion at the beginning of the summer last year and it was easy, cheap, and well worth it. It's very convenient to be able to buy additional cans of refrigerant over the counter, especially if you have a little leak and need to "top off" your system every now and then.

    One caveat though: The kit does not tell you this, but you will need to purchase or borrow some type of schrader valve removal tool (the type for tires is fine) for use on the low pressure fitting on the condensor before installing the adaptors. It stinks to have to stop a job half way through for lack of tools!
     
  7. Thunder

    Thunder 3/4 ton status

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    When you change over to 134a. Be sure to use the oil made for 134a. Drain as much of the old oil out as you can.Or take it to a air conditioning shop and have the system evacuated. That is the best way and your not venting freon to the atmosphere.
    The oil in your freon charged system is not compatable with 134a. The freon oil will react with the 134a and form a corrosive and will eat up your seals. It is also a good idea to install a new dryer(the thing that looks like a silver beer can) for best performance.

    <a target="_blank" href=http://coloradok5.com/gallery/Thunders-Blaze> Blazer pics</a>

    <font color=blue>Nevada... Where the pavement ends and the west begins<P ID="edit"><FONT class="small">Edited by Thunder on 02/26/02 04:16 PM.</FONT></P>
     

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