R12 to R134 conversion?

stevieclj Part of things Posts: 661	R12 to R134 conversion?stevieclj @stevieclj
	Jul 29, 2015 21:33:49 GMT Select Post Deselect Post Link to Post Back to Top
	I call upon the extensive knowledge of the forumites to help me in my time of need. The vehicle in question is a 1993 Mitsubishi Pajero LWB, and from what I've been told, uses the R12 refrigerant in the Air Conditioning system. It seems it is becoming harder to find someone in the local area who can clean and refill the system. So, just to add to the list of bits I could do with getting sorted, is it possible to convert the system to the R134 refrigerant, and if so, what parts would I need to look at replacing? Sent from my very warm, but exceptionally comfy, Pajero!
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Ryannn Posted a lot Posts: 2,421	R12 to R134 conversion?Ryannn @blackbelt1990
	Aug 1, 2015 18:38:57 GMT Select Post Deselect Post Link to Post Back to Top
	I think there's a thread about this on the Pajero owners forum at the moment. Unless it's yours! Lol
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jonsey Posted a lot Enter your message here... Posts: 2,630	R12 to R134 conversion?jonsey @jonsey
	Aug 8, 2015 18:10:24 GMT Select Post Deselect Post Link to Post Back to Top
	In my last job I used to develop air con systems. Only worked on R134a and co2 systems. But one guy working with us had a calibra (iirc) with an r12 system. We filled it with a drop in gas that was supposed to be a straight replacement. I don't know if it's still available (you need to be qualified to buy refrigerants these days) or how good it was as he left shortly after. I doubt you could fill it with R134a as the txv will have been set for a different gas so will either generate high pressures or not enough to work efficiently.


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