how to convert A/C from R-12 to 134-A - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jennkent5454 · 11-02-2012, 10:23 PM

I have a 1983 silverado, The A/C is cold but not cold enough, I wanted to get it converted so I can add freon myself if I need to, the shop I took it to said they would do it for $100. they told me they just replace 2 O-rings and add a quick connect adapter. I always thought it was a costly repair to do. Does this sound correct?

Edahall · 11-03-2012, 12:07 AM

Yes, it's a costly conversion if done right. For example, the existing condenser should be changed out to a parallel flow type condenser.

Why don't you have it topped off with R12? It shouldn't need very much.

meter swinger · 11-03-2012, 12:22 AM

Check on craigslist. Sometimes you can find R12 for a good price.
Posted via Mobile Device

kris's66lwb · 11-03-2012, 12:37 AM

I get r12 from work
Posted via Mobile Device

86c20 · 11-03-2012, 06:41 AM

as long as you have your 608 or 609 hvac cert you can at most ac supplies. and the r12 gets cooled then the 134

88Jimmy4x4 · 11-03-2012, 07:59 AM

oil used for r12 is not compatible with r134 so system should be flushed. I use r12 in mine, you can get it on craigslist and ebay

11-02-2012, 10:23 PM	#1
jennkent5454 Registered User Join Date: Oct 2012 Location: Austin TX Posts: 13	how to convert A/C from R-12 to 134-A I have a 1983 silverado, The A/C is cold but not cold enough, I wanted to get it converted so I can add freon myself if I need to, the shop I took it to said they would do it for $100. they told me they just replace 2 O-rings and add a quick connect adapter. I always thought it was a costly repair to do. Does this sound correct?

11-03-2012, 12:07 AM	#2
Edahall Registered User Join Date: May 2011 Location: Goliad, TX Posts: 672	Re: how to convert A/C from R-12 to 134-A Yes, it's a costly conversion if done right. For example, the existing condenser should be changed out to a parallel flow type condenser. Why don't you have it topped off with R12? It shouldn't need very much.

11-03-2012, 12:22 AM	#3
meter swinger Registered User Join Date: Apr 2009 Location: Kennewick WA. Posts: 1,437	Re: how to convert A/C from R-12 to 134-A Check on craigslist. Sometimes you can find R12 for a good price. Posted via Mobile Device

11-03-2012, 12:37 AM	#4
kris's66lwb resident wrencher Join Date: Dec 2006 Location: ramona california Posts: 720	Re: how to convert A/C from R-12 to 134-A I get r12 from work Posted via Mobile Device

11-03-2012, 06:41 AM	#5
86c20 Registered User Join Date: Mar 2012 Location: edgartown mass Posts: 852	Re: how to convert A/C from R-12 to 134-A as long as you have your 608 or 609 hvac cert you can at most ac supplies. and the r12 gets cooled then the 134 __________________ 1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car

11-03-2012, 07:59 AM	#6
88Jimmy4x4 Registered User Join Date: Oct 2003 Location: houston, texas Posts: 1,974	Re: how to convert A/C from R-12 to 134-A oil used for r12 is not compatible with r134 so system should be flushed. I use r12 in mine, you can get it on craigslist and ebay __________________ 2008 Silverado Z71 RCSB 1991 GMC Jimmy 4x4 1976 GMC Sierra C15 SWB



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