Convert A/C to R143?

[hawes99]

I need to replace my compressor anyway, and the guy at Griffiths told me the conversion to R134 works good on the 944. I think it will save me money in the long run, but I want to know if it really works well. Has anybody done the conversion and how well does it work. Thanks for any input.

[Pilot_951S]

My oled mans 951S has R134, it cools the air just fine but the shop says they have seen a correlation between R134 conversions and bad evaporator cores. Expensive replacement but then R12 is $60+ a pound so you probably save in teh long run.

[944Driver]

I had this conversion done on my 83 last summer. It cost me about $1400. The big cost was the condensor. Mine was cracked. I looked everywhere, couldn't find a used one, so had to bite the bullet and buy new.
The cooling is satisfactory, but as you know, the early 944's have TERRIBLE airflow!

[lm6y]

I changed mine over to the Sanden compressor, and 134a. It does alright, but like the man said, the early cars had terrible airflow. I like my a/c COLD. That's why I said it's alright. We have a 97 Olds' Cutlass also, and the a/c in my car is almost as cold as the Cutlass.

[Lawrence Coppari]

Can't recall whether I sent you a note about this. I converted two of my vehicles to an alternate refrigerant that is quite inexpensive and can be mixed with F12. The F12 will eventually leak out leaving the new stuff. I did my 1980 450SL about 4 years ago. It is still cooling well. Two years ago I added it to my 1986 944turbo. It works even better in it. So far there have been no problems with either car. If you are interested, let me know. A full charge costs about $15.

[hawes99]

Lawrence, yes I'm interested in what you used. Could you please explain what it is, where you got it and about how much it would cost. Thanks, Nate

[porscheboi928s/c944t/n]

just vac. mine up and put the mineral oil and 134-a also i put a leeak detector and that was it...never had a problem and i drive my 944 everyday with a/c on....done it on my 928 lasy yr. and never had a problem..but stupid me...i put a supercharger on my 928 and my a/c has to go...too bad...

[pst]

A correlation between R134A and evaporator failure???? Sounds very strange to me since evap's for both refrigerants are constructed from the same materials. I converted my '79 924 and my '84 944. Both blow 45 deg. F. As far as condensers are concerned, there are universal high efficiency serpentine aluminum condensers available from J. C Whitney for around $75. These work great. I changed all of the o-rings but not the hose and have not seen any problems with lost refrigerant in either car. Both were converted 2 years ago.