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So - my 93 Safrane still has the old R12 refrigerant (but my ac system is empty).
Local ‘expert’ has quoted me £300 to convert to R134a but I have read the RS24 will simply drop in.
Any experience, suggestions and pointers to people in South Wales?
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My jag was R12 and I just put 134a in it worked perfectly
I was working in a bodyshop at the time so it was free I just bought an adapter so the a/c machine could be connected to the jag fittings
I know there's more to it than that and I'm sure people will tell me so
But if it works it works !
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1992 240 Volvo T8
1955 Cadillac
1994 BMW E34 M5 (now sold )
1999 BMW E36 sport touring x2
1967 Hillman imp Californian "rally spec"
1971 VW bay window (work in progress)
1999 Mazda 323F
1987 Jaguar XJ12
All current
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colnerov
Posted a lot
Posts: 2,832
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Hi, I have a mate who did A/C work and he said most of the time you can get away with just putting 134a in with no problems. However recently there's a drive to change A/C gases to 1234yf, part of that drive has been production limits on 134a and a subsequent increase in price.
Colin
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Or you could use propane much cheaper and it works in the same way
Not so good if you crash "pros and cons " 😄
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1992 240 Volvo T8
1955 Cadillac
1994 BMW E34 M5 (now sold )
1999 BMW E36 sport touring x2
1967 Hillman imp Californian "rally spec"
1971 VW bay window (work in progress)
1999 Mazda 323F
1987 Jaguar XJ12
All current
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colnerov
Posted a lot
Posts: 2,832
Member is Online
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Hi, Mercedes are resisting and campaigning against the use of 1234yf because it becomes a poisonous gas in the event of a vehicle fire.
Colin
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Or you could use propane much cheaper and it works in the same way Not so good if you crash "pros and cons " 😄 If was going to have a crash I'd be more worried about the 10 gallons of petrol tha 1/2 pint of propane! Propane isobutane works even better (sold for camping at altitude) |
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The problems with using the newer refrigerants is that no connections can be in the cabin area,quite often the expansion valve is in the cabin,
MB does now use R1234YF in all but I believe S and E class.
Remember the seals on any system designed for R12 and were not always compatible with R134a.
First task, get someone to pressure test system with OFN, not a vacuum test which is what the likes of Hal----s and Kwi---T will do
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retired with too many projects!
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Feb 10, 2019 21:13:19 GMT
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If I remember correctly, and its been a while, R416A is a drop in replacement for R12
Ive still got a bottle of R12 somewhere, been gathering dust for about 15 years now
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1997 BMW E36 328i Touring
2000 Renault Clio 172 ph1
2006 Discovery 3
1996 VW Corrado 16V
2002 BMW E39 530i Sport
1995 Subaru Legacy GT twin turbo
1992 Rover 216 GTi
2002 BMW 330Ci Clubsport SMG E46
2007 Ford Transit 6 seater Jumbo
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ChasR
RR Helper
motivation
Posts: 10,191
Club RR Member Number: 170
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R12 Air con solutionsChasR
@chasr
Club Retro Rides Member 170
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Feb 11, 2019 20:02:17 GMT
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If I remember correctly, and its been a while, R416A is a drop in replacement for R12 Ive still got a bottle of R12 somewhere, been gathering dust for about 15 years now Correct. There was a very detailed thread on using R416 not too long ago. |
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Feb 16, 2019 13:55:52 GMT
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Thanks for all the replies - I’ve had the system pressure tested by aircon specialists - small leak which he said would with sealant. The compressor is fine. I’ll research replies to this thread. Thanks
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Mar 15, 2019 12:04:46 GMT
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O rings and compressor oil from R12 systems can be an issue when replacing with R134a. Best to change them and oil to be sure. Also, old hoses may weep [porous] with R134a. But you can just drop R134a in and it might just work. I will look at what gas I have in my shed as alternative to R12, I do have a couple of bottles of it [cant remember number off the top of my head] and also have about 4 of R12... squirreled them away when R12 was being phased out. Thanks - apologies for the tardy reply. |
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