A/C Convesion
Thread Starter
Advanced
Joined: Jul 2005
Posts: 85
Likes: 0
From: Brownstown MI.
A/C Convesion
I am trying to covert my A/C on a 1980 to R-134. I put adaptors on the high and low ports and drain the old coolant and filled with the R-134. It blows a little cool but not nearly as it should. Is there something else I should be doing for this conversion?
Melting Slicks
Joined: Jun 2005
Posts: 3,069
Likes: 83
From: Everyone needs something to believe in, I believe I'll have another beer. Wisconsin
The oil used in an R12 A/C systom is not compatable with oil
used in a RI34A system. you have to drain all the old oil out
pull a vaccum etc. very involved &complicated procedure
used in a RI34A system. you have to drain all the old oil out
pull a vaccum etc. very involved &complicated procedure
Race Director
Joined: Sep 1999
Posts: 11,360
Likes: 382
From: Plano TX
I used one of those interdynamic conversion kits on my 83 Caddy. It has blown cold for 3 years now. The kit comes with a special chemical that is supposed to fix the oil compatibility problem.
Also recommend you refill with R134a with stopleak as R134a seems to find leaks R12 didn't (r134a molecules are smaller).
Also recommend you refill with R134a with stopleak as R134a seems to find leaks R12 didn't (r134a molecules are smaller).
Race Director
Joined: Apr 1999
Posts: 15,133
Likes: 477
From: NM
Originally Posted by drswitala
I am trying to covert my A/C on a 1980 to R-134. I put adaptors on the high and low ports and drain the old coolant and filled with the R-134. It blows a little cool but not nearly as it should. Is there something else I should be doing for this conversion?
Le Mans Master
Joined: Mar 2000
Posts: 9,127
Likes: 2,326
From: Pottsville, PA. USA Home Of America's Oldest Brewery Yuengling
I rebuilt my system last year. I installed a new compressor, hoses, drier, pressure switch, and all new green O-rings. My car blows 39o at the center vents on 134a
