Barrist

Getting to be that time to upgrade to 134a.

Questions for the experts, what parts are NEEDED ?

System still has some pressure, compressor cycles.

I'm sure seals, maybe hoses, but what about the VIR Eliminator Kit ?

Thanks for Your time,

Bill

I have searched the threads, clear as mud.

Easy Mike

Any automotive AC shop can tell you what you need and make the change to R134a for you.

Barrist

That's exactly why I am asking here.

The last place I stopped said $200.00 to convert, but would not elaborate on what would be replaced.

If nothing is being changed out, I'm guessing I could get a cheap vacuum pump and some Freon.

Thanks,

Bill

MelWff

read this link and contact the company for more detailed information
http://www.classicautoair.com/GM_OEM...nversion.html?

SIXFOOTER

Thats a good link, got all the info you need. Do not skimp on changing the hoses just because yours look good. Barrier hose is required because the 134 is a smaller molecule and can pass through the rubber on R12 hoses. Good oportunity to do a dress up with AN Hose and fittings

redcruz1120

The right way to start it off, the system has to be completely flushed and washed of any traces of R12. not just Vacuumed.

oledave60

Stay with r12, you want be happy with 134a. There is plenty on ebay for about $30to35 per can. It takes about 4 cans.

Barrist

Maybe I should have worded this differently.........

What I should have asked You Folks, is what have you done on a "75 A/C conversion ?"

I have checked with 3 shops, all $200-$250, just vacuum and recharge system to 134a.

Dealer, $245, Flush, change oil and recharge.

I hate to bother you, but don't want to spend $200, then add another $400.

Looking for the correct parts to change B-4 I start this.

Thanks,

Bill

oledave60

If you do a lot of searching you will find you need new barrier hoses, the original condenser does not work well with 134a, so you will need a new cross flow condenser. Also the old style a6 compressor does not function well with 134a.

I did this conversion in my 73 Camaro and it barely got cool. I flushed it out and installed r12 and it is cold. In my 75 Vette I have all original components and r12 and in Texas heat it works great. Dave

Also, for $20 you can take an open book on line test and get an EPA section 609 certification. Then you can buy all the r12 you want.