Air Conditioning

[terryt]

Does anyone know of a conversion kit from R12 TO R134

[eaglescout526]

4.0 or 2.5?

[terryt]

4.0

[eaglescout526]

I know the dryer and o-rings need to be replaced for the 134 conversion. Condenser I have heard you can use the old one but should convert. 
You can keep the existing valves on the compressor, you just need to get the 134 adapters. 

[Tex06]

Terry,

   I purchased the components from a '96 for my '92 (condensor, drier, etc). The hoses were difficult to source (one in particular, I forget but it was one of the 2 that go to the compressor).

 

If your components are in good shape, the drop in 12 replacement refrigerants work well and are very reasonable in price. 

[AZJeff]

I don’t recommend using any of the supposed “R12 substitute/equivalent” refrigerants in vehicles.

 

Given that the AC system in the MJ was sized to deal with the internal volume of the XJ, the system has MORE than enough cooling capacity to deal with any performance reduction seen by switching from R12 to R134a.

 

If an MJ owner is considering rebuilding his AC system, a proper conversion to R134a is straightforward and will yield excellent results.

[Gjeep]

94.5-96 XJ's ran 134 refrigerant from the factory. I'm currently running that exact set up in my '92 MJ and just installed it in my current '91 build. I like having things factory when I can.