'75 A/C Questions
Thread Starter
Racer
Joined: Aug 2015
Posts: 373
Likes: 170
From: South Bend IN
'75 A/C Questions
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.
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.
Thread Starter
Racer
Joined: Aug 2015
Posts: 373
Likes: 170
From: South Bend IN
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
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
Race Director
Joined: May 2006
Posts: 18,758
Likes: 2,590
read this link and contact the company for more detailed information
http://www.classicautoair.com/GM_OEM...nversion.html?
http://www.classicautoair.com/GM_OEM...nversion.html?
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
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
Thread Starter
Racer
Joined: Aug 2015
Posts: 373
Likes: 170
From: South Bend IN
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
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
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Pro
Joined: Nov 2011
Posts: 517
Likes: 20
From: Scroggins Tx
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.
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.
Last edited by oledave60; May 3, 2016 at 05:08 PM.