Alternative To The A6 A/C Compressor

Discussion in 'General Tech' started by oldeman, Jun 23, 2019.

  1. oldeman

    oldeman Member

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    Greeting To All
    What are you guys using instead of the reman a6? have had to replace two in two years, they end up leaking around the clutch seal. there must be something better.
     
  2. Cadillac Kid 1

    Cadillac Kid 1 Well-Known Member

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    Did you prime the oil pump when you installed the A6? Improper start up is the major cause of short seal life
    Greg Surfas
     
  3. 48Austin

    48Austin Active Member

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    The a6 compressor is one of the best AC compressors ever made. If you have a front seal leak, so what! Are you sure your main leak is at the front seal? How much Freon are you losing? Are you using R12 or HotShot 12?
     
  4. 48Austin

    48Austin Active Member

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    Even Ford started using the Harrison compressor in the early '70's!
     
  5. Darius

    Darius Well-Known Member SUPPORTING MEMBER

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    The A6 A/C compressors were top notch in their day. I never had any issues with mine. :D

    It they would fit while using the Edelbrock intake manifold it would be my choice …. if Freon 12 were available.:( :cry:

    bro. d
     
  6. MIHELA

    MIHELA Active Member

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    You might be interested to know that R152a, commonly used as air duster, can be used to replace R12.
     
  7. Darius

    Darius Well-Known Member SUPPORTING MEMBER

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    Hmm.

    d
     
  8. Cadillac Kid 1

    Cadillac Kid 1 Well-Known Member

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    First time I heard of using 152a as a replacement for R-12. Went back and checked out some data. First of all 152a is flammable which by itself would not be an insurmountable problem, but its miscibility with mineral oil and or POE is in doubt as well as what would result in a very high compression ratio when used as an automotive refrigerant. Would be very interested in knowing how this works out for you.
    Plenty of R-152a available from China at a very low price. "Purity" might be in question.
    Greg Surfas
     
  9. MIHELA

    MIHELA Active Member

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    R-1234yf is also flammable. It's now the standard refrigerant in many new cars. It's still a better option than propane, which some people have had success with but I would never try.
     
  10. 48Austin

    48Austin Active Member

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    The A6 can handle 134 with no problem.
     
  11. 48Austin

    48Austin Active Member

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    Look into "OLD" ac, refrigeration, and freezer systems. They used ammonia. You will defiantly know if there is a leak!
     
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  12. Darius

    Darius Well-Known Member SUPPORTING MEMBER

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    LOL!!!
    d
     
  13. Cadillac Kid 1

    Cadillac Kid 1 Well-Known Member

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    They also used Methyl Chloride and Sulfur Di Oxide which immediately proceeded R-12, but what has that got to do with the original question of a compressor to replace the A-6?
    Greg Surfas
     
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  14. 48Austin

    48Austin Active Member

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    It's easy. Use the old compressors and the old coolant. The more the technology advances the more dangerous it becomes.
     
  15. 5one9

    5one9 Active Member

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    Not a reply yet that answers the original question. I’m interested in the answer also when a valid reply is finally given.
     
  16. Cadillac Kid 1

    Cadillac Kid 1 Well-Known Member

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    By the way, this is the R-4 I used on my motor with an Edlebrock 2115.
     

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  17. Darius

    Darius Well-Known Member SUPPORTING MEMBER

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    Actually there have been several "observations," if not out and out suggestions of alternative A/C compressors to replace the Harrison A6.

    Greg, your first reply to the original poster didn’t deal with a different unit but did try to identify possible problems with the two A6's the O/P had go bad. Your question was a good one and it might hold the ultimate answer. 48Austin shared similar concerns. Maybe the issue might be how the A6's are set up, and their maintenance, rather than finding a replacement.

    Several of us offered our own positive experiences with the A6's indicating that they are viable compressors.

    Still on this thread, Greg also posted a comment along with a picture about the R-4 in use on his Cadillac.

    Finally, currently on my thread, "Showing you My Junk - Pictures Included," I’m exploring alternate A/C compressors, if for a different reason. (https://cadillacmagazine.com/forums/threads/showing-you-my-junk-–-pictures-included.16215/page-31)

    Best,

    bro. d
     
  18. 48Austin

    48Austin Active Member

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    The R4 compressors where used on 368's and 425's after 1979 I think? So brackets should not be a problem. From what I've seen the R4 should work with the Edelbrock intake. But if you want to stay with the A6. It is a great choice. Like I said, you have to have the right tools to work on them. It's not "Rocket Science" just cars.
     
  19. 48Austin

    48Austin Active Member

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    The original question was to find a replacement. Which there is no reason to. Unless there is going to be an intake manifold change. Just got CRAP rebuilds. A6's ALWAYS LEAK from the front seals!!
     
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  20. Darius

    Darius Well-Known Member SUPPORTING MEMBER

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