[wreckfixer]

I replaced my engine this winter and while doing that i replaced my expansion valve and have a new rec/dryer. what would it take for me to change over to 134? I was running freeze 12 last year, or should i stay with freeze 12 or go with r12? It is a stock a/c on a 65 elky with An A6 compressor. Thank you

 

[twotone64]

With the current setup r12 will work best, however you can switch to 134 if you flush the system and put the correct oil in.

On a side note, which A/C system do you have? is it the this one? With the vents built into the metal part of the dash and the center port next to the stereo.

If it is could you possibly take some pictures of the way your lines are run to your evaporator, to your condesnor, how the condensor is mounted? I have the system, I think I have it figured out, but am planning to use a new sanden compressor instead of the original A6 compressor. sorry about the blurryness... I can't find my other pictures of it actually installed.

 

[wreckfixer]

I'm Still a week or so from running my lines if you don't get a response by then I will see if I can post pics.

 

[wreckfixer]

anyone else ?

 

[brimac]

With such a system, I'd personally use R-12. Especially with an A6, ..stuff works like a champ. That's the route I'll be taking on my 70'. If the refrigerant hoses have some age, I'd consider replacing.

 

[TexasAg]

I kept the original system....POA valve / with A6 compressor, I did convert to 134freon. Did have the POA valve checked & tweaked for 134 freon.

I reused the A6compressor, all hoses, condenser, & evaporator.
I replaced the dryer, expansion valve, and all o-rings.
Also bought the 134 low & high side conversion fittings from NAPA (nice HD brass units.)

Classic auto air was a great help (parts and advice / thanks Curtis!!!).

The Auto Air Forum is a wealth of info->http://www.autoacforum.com/
I took my time.....read the forums and am very pleased with the result (mine cools to 38 degrees at the dash vents), plus I still have the original system.
Here is link to my conversion....info, (pics too)....
http://www.chevelles.com/forums/showthread.php?t=221216