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Convert Air Conditioning?

Discussion in 'Tech Tips & Tech Support' started by mm5300, Jul 19, 2017.

  1. mm5300

    mm5300 Active Member

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    I was just wondering what people's thoughts were on converting the A/C to 134a. My A/C isn't working and I am going to get the lines, etc checked first, but seems like R12 is difficult to find these days, and my mechanic recommended converting it. My car isn't 100% original, but I do keep all the original parts that I might replace for performance and other stuff. But does anyone see the benefit of trying to find R12 and finding someone who still has their equipment working, or just convert to 134a? I'd be very interested to here was people think. Thanks!
     
  2. Phil Leinbach

    Phil Leinbach Active Member

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    If you go through with the conversion:

    1) replace the orifice tube with a variable orifice tube, it will lower the vent temp at least 12 degrees.
    2) It's also a good idea to use barrier hose.
    3) They make a solvent flush to use for R12 to R134 conversions since the oil chemistry is different.

    If your car is concourse lever you will probably want to keep it R12. Seems I've seen where there are refrigerants that are compatible out there now. If I see it again I'll let you know.
     
  3. robert lee

    robert lee Gold Member

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    Change it over and be done with it.
     
  4. DynoDave

    DynoDave Well-Known Member

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  5. mm5300

    mm5300 Active Member

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    Ok great. Thanks for the responses.
     
  6. Phil Leinbach

    Phil Leinbach Active Member

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    Thanks for the HC12a Info Dave.
     
  7. instro84

    instro84 Well-Known Member

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    i did the conversion on 308 last summer, all new parts and had hoses rebuild to be compatible with the 134 oil. took it to a shop had them vacuum it and fill with 134 and it works good. i'l out in so cal in the desert near edwards afb where for the last 2 weeks its been well over 100 degrees, ac is cool and engine temps are around 185 with both fans on.
     
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  8. BOBTTA#464

    BOBTTA#464 Well-Known Member

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    instro84, I lived out there for 23 years in California City. Yes, it can get hot!!
     
  9. simo

    simo Well-Known Member

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    Nice and cool 50 miles away...Well sometimes it a168 Ridgecrest.jpg z112 Ridgecrest.jpg
     
  10. BOBTTA#464

    BOBTTA#464 Well-Known Member

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    I remember it well......A "Dry" heat!
     
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  11. Matstock4

    Matstock4 New Member

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    I'm in the same exact situation... I was quoted $1200-$1600 to do the conversion.

    Sent from my XT1650 using Tapatalk
     
  12. DynoDave

    DynoDave Well-Known Member

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    Ouch!
     
  13. Matstock4

    Matstock4 New Member

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    Yeah even with California prices that seems a little high to me.

    Anyone have thoughts on what the conversion should run?

    Sent from my XT1650 using Tapatalk
     
  14. instro84

    instro84 Well-Known Member

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    Simo, are you in ridgecrest?
     
  15. instro84

    instro84 Well-Known Member

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    lets see, i think the hoses expensive part was getting the lines rebuilt, my car came with a new condenser and dryer, i got everything else from rock auto then after having a shop vac and fill and leak check. even if i bought all the parts myself i think it can be done under a grand.
     
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  16. instro84

    instro84 Well-Known Member

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    lol its a dry 102 today
     
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  17. robert lee

    robert lee Gold Member

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    In Georgia we have fun , sun , and 150% humidity.. BTW instro84 how are you liking # 308 ?
     
  18. DynoDave

    DynoDave Well-Known Member

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    I was listening to the KSHE (St. Louis) morning show Friday, and they were saying 102*. And the humidity in temps like that is always high, being in the Mississippi river valley. Glad I was listening from a distance. Made my 92* in Michigan seem quite tolerable.
     
  19. instro84

    instro84 Well-Known Member

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    Robert, its been good only had one problem left me stranded in vegas last year when fuel pump went out. i've rebuilt the front suspension and a few other things since then i usually drive it to work once i week (90 miles round trip), struts and brake are next on my list.
     
  20. robert lee

    robert lee Gold Member

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    To my knowledge the pump has never been replaced prior so it lasted a long time.. in other news before i paid $1600 for A/C i would just roll the window down...:eek:
     
  21. instro84

    instro84 Well-Known Member

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    my ac conversion wasn't that much wanna say it was around 600-700 the can came with some of the ac parts still new in the box
     
  22. dvernst

    dvernst Well-Known Member

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    I have a receipt from the previous owner of my Buick for $145 for the R134 conversion. Air blows really cold. My TTA is still using R12. It's relatively easy to find a few cans on Craigslist still.
     
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  23. dvernst

    dvernst Well-Known Member

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  24. DynoDave

    DynoDave Well-Known Member

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    Ahh, Can-O-Gas brand. :D

    R12 is R12. Just made me chuckle.
     

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