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05-17-2016, 12:53 AM
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#1
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Join Date: Jan 2005
Location: Conshohocken, PA 19428
Posts: 589
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R-12 to R-134A?
The A/C in my car doesn't work at the moment. I was trying to find a kit the has everything needed to make the change over, but I'm currently unable to find one. A decade a go when i was in UTI I know they were out there, and was wondering if you guys knew where I could find it, or best way to go about it? Or even if you knew any good places to get the R-12 systems serviced. Thanks.
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05-17-2016, 08:11 PM
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#2
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Join Date: Oct 2008
Posts: 586
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I do R12 & 134a.
to convert you need to flush the system and change the orings. Replacement of some parts is preferred.
What is the car?
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05-17-2016, 10:00 PM
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#3
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Join Date: Nov 2011
Location: Manalapan,NJ
Posts: 216
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I need to switch mine over as well
__________________
92 Firebird (First Car  SOLD 2/18/17)
90 Firebird Formula 305 T5 Daily Driver (SOLD)
87 GTA Gunmetal RIP 
1984 Trans Am 6.0 4L60E , Ford 8.8 3.55 gears
1991 Trans Am
1985 Iroc Z
2015 Silverado 2500HD
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05-18-2016, 02:05 AM
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#4
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Join Date: Jan 2005
Location: Conshohocken, PA 19428
Posts: 589
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Quote:
Originally Posted by TaKid455
I do R12 & 134a.
to convert you need to flush the system and change the orings. Replacement of some parts is preferred.
What is the car?
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I have an 85 Trans-am with the base 4brl 305/5 speed.
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05-19-2016, 06:38 PM
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#5
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Power Member
Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,632
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A lot of the time to get decent AC performance you need to change out the condenser.
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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05-20-2016, 07:24 AM
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#6
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Join Date: Mar 2007
Location: NJ
Posts: 540
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If you go to any major parts store you can request a retrofit kit. It will include new service fittings, a few valves and a sticker indicating that the vehicle has R134 instead of R12. I would also recommend replacing at least the receiver/dryer (the canister looking piece) they have a desiccant bag inside of them to adsorb moisture and will also retain some of the old oil. After that I run a vacuum on the system for 30 min or so.
That is the way I've done a majority of my retrofits and have never had an issue. The correct procedure is to disassemble and flush all of the old oil from the system, refill oil, replace dryer and TXV or orifice tube, vacuum then recharge
The new charge weight is 90% of the original. If you had an original charge of 3lbs R12 your new charge would be roughly 2.7lbs or 2lbs 12 oz with R134.
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05-21-2016, 06:25 AM
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#7
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Join Date: Jan 2005
Location: Conshohocken, PA 19428
Posts: 589
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I was hoping to find a kit that had the new dryer and compressor as well as the seals and new fittings. Thanks for the info though. Also possibly look into cost of having it done, since I don't have te supplies to recover, or put into a vacuum.
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1985 Pontiac Trans-am
2013 Harley-Davidson Street Glide
Last edited by CrAsH; 05-21-2016 at 06:27 AM.
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05-21-2016, 08:38 AM
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#8
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Join Date: Aug 2007
Location: Piscataway, N.J.
Posts: 1,729
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Quote:
Originally Posted by CrAsH
I was hoping to find a kit that had the new dryer and compressor as well as the seals and new fittings. Thanks for the info though. Also possibly look into cost of having it done, since I don't have te supplies to recover, or put into a vacuum.
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If you get it done by a GM Service Garage, look at around $450.00! 
Once you start taking it apart, you don't want to be in some off the road garage that has to start fishing for the parts you will need for a 25-30 year old system. Also a warranty comes in handy IF there are problems. Just my 
__________________
1991 FORMULA 350-GONE BUT NOT FORGOTTEN
1 of 1,197 with L98 Option/13.79@100 mph
1994 25th ANNIVERSARY TRANS AM GT -1 of ONLY 2,000 made/ Only 128 made with a HURST 6-Speed Manual and 91 with T-Tops and Compact Disc/ K & N Filtercharger/Magnaflow Performance Muffler/Air Foil- ORIGINAL MINT Arctic White Ultra Rare SURVIVOR. DAYTONA 500 PACE CAR Decal Kit!
SOLD: 1989 Turbo T/A in 1991 it ran 12:18@115 mph
Last edited by edpontiac91; 05-21-2016 at 08:46 AM.
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05-22-2016, 05:23 PM
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#9
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Power Member
Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,632
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Check with Arizona Mobile Air... ackits.com
I've bought a decent amount of stuff from them, good quality parts. I believe they have/can put together, retrofit kits.
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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05-22-2016, 05:46 PM
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#10
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Join Date: Jan 2005
Location: Conshohocken, PA 19428
Posts: 589
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Thanks Bishop
__________________
1985 Pontiac Trans-am
2013 Harley-Davidson Street Glide
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