A/C conversion
Thread Starter
2nd Gear
Joined: Apr 2008
Posts: 2
Likes: 0
A/C conversion
Can anyone tell me if there is anything that has to be done to the AC system on my 1970 vette to convert it to 134. I know about the vacuming of the system, plus the new oil and fittings. My concern is will I damage any of the old components on the ac system or does anything have to be replaced in order to convert to 134. Getting way to expensive trying to work with R12.
JR188
JR188
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
There are kits available at auto parts stores to make the conversion, and if done properly, doing so will not hurt your system's a/c components. However, performance results are rarely as good as that of using R12 refrigerant. My suggestion is to stay with R12 for best results as this is the stuff your system was designed for. 
Drifting
Joined: Jul 2005
Posts: 1,562
Likes: 2
From: Spring Texas
If you go to some of the AC web sites, you will find that it is recommended that you completely flush your system to remove the old oil. It is also recommended that you replace all of your O rings and upgrade your hoses. Having pointed out what the AC guys recommend, I will also tell you that there are many here on the forum who have just replaced the drier, add the proper oil, pull a vacuum and add 134. And they have had success. Talk to guys that have done it and make up your mind.
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Intermediate
Joined: Oct 2007
Posts: 40
Likes: 0
From: Port Dover Ontario
Costs 14.99 CAD a can. I bought a kit which includes 2 cans and a quality gauge for 35.00 As far crossing the border I don't know. I don't think it would be something I would want to "declare"
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
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Burning Brakes
Joined: May 2007
Posts: 1,042
Likes: 1
From: Greensboro NC
I happen to have a 30lb that still has some 25+ in it, if someone might be interested.
Would have to be someone in the area though, as i don't believe it would be somethiing that I'd want to ship.
All my toys that had R12 are long gone...
Would have to be someone in the area though, as i don't believe it would be somethiing that I'd want to ship.
All my toys that had R12 are long gone...