R12 Replacement?

[69VN]

Have a friend that owns a classic car. He'd like to know if there is any replacement for R12 without having to change anything on his A/C system. Thanks for your help guys.

Sal

[Mr70]

Complicated,but has he considered R134a?

<object width="425" height="350"> <param name="movie" value="https://www.youtube.com/v/__alchrw7CE"></param> <param name="wmode" value="transparent"></param> <embed src="https://www.youtube.com/v/__alchrw7CE" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>

[marxjunk]

nothing that works well...there is a substitute that is supposed to work, but i havent heard anyone say they are happy with it. and they say it doesnt work well, and when the car stops moving so does it

i havent really seen anything that works as well as R12...i have a connection for some in cans if he needs some

ive done 3 r134 conversions...and personally..it isnt worth the effort because it doesnt work as well as R12..ive put 134 in 2 novas and a GS..used new compressors, orifice, etc..and it just doesnt work as well as R12...and that my personal experience

[Lynn]

Mark is correct. There is nothing available without changing something.

R134 is at least acceptable if you can locate a larger than stock condenser in fixed orifice and expansion valve type systems.
I have not tried it on a POA valve type system from the 60's.

[m22mike]

I have not done a conversion to 134, however the POA valve can be re cailibrated by Classic Auto Air in florida for use with 134.
Nothing will be as good as R12.

[69VN]

Thanks again gentlemen for your help. I will relay the info.

Sal

[83hurstguy]

I would recommend keeping it R12 if he can. There is still a lot of it available, you can get your EPA license online and even do it yourself. With R-134a, you have to change oil type as well. I like to keep the original systems the way they were designed to operate, and they will practically blow snowballs in July.

[Zman1969]

I started converting anything to 134A to me its not worth the expense to stay R12 change it and be done even that gets pricey in summer and I'm about ready to buy another 30lb cylinder of 134

[L78steve]

Use the 12 until its gone.

[69SSZL1]

I just converted the AMX to R134. Changed the compressor oil, had the original Dryer rebuilt by an air condition shop for $80, and changed the few o-rings to the green ones. Easy to do. Most people overcharge the system and it wont cool as good. You only put in 80% R134 of the R12 charge(My R12 system takes 2 lbs). My A/C system works excellent with the R134. This weekend, the outside air was 95 degrees and I drove to the weekly cruise-in with the A/C on at 59 degrees and had to turn it down (too cold)!
Cruzin Grand Escondido,CA:

For Sale in the for sale section of the Forum: