converting to R134a from R12
Printed From: The Ford Torino Page
Category: Model Specific Forum
Forum Name: General Automotive Technical Discussion
Forum Description: Technical Automotive discussion of anything not specific to mid-size Ford/Merc
URL: https://forum.grantorinosport.org/forum_posts.asp?TID=18329
Printed Date: 26-March-2026 at 11:02AM
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Topic: converting to R134a from R12
Posted By: russosborne
Subject: converting to R134a from R12
Date Posted: 15-September-2019 at 4:39PM
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Car is currently R12, not working. I have a new compressor, dryer, and expansion valve, all are R12/R134a compatible. I plan on making new hoses. Anything else I would need to worry about? Condenser? Not sure what else there is. Thanks, Russ
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Replies:
Posted By: jhggtsf
Date Posted: 24-September-2019 at 1:31PM
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If you are definitely going with R134a, you are probably going to want to update to a parallel flow condenser. There's an article on Hagerty from a guy who wrote a book about it that you might find helpful: https://www.hagerty.com/articles-videos/articles/2018/04/23/fixing-vintage-air-conditioner" rel="nofollow - https://www.hagerty.com/articles-videos/articles/2018/04/23/fixing-vintage-air-conditioner ------------- Joe |
Posted By: russosborne
Date Posted: 24-September-2019 at 6:47PM
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Thanks. Good read. Might get his book, wish they had a Kindle version though. Advantage to 134 is cost and availability. Found out anyone can take an online open book test to be able to buy R12, so that is an option. But more expensive. I'm thinking with the Ranchero having a full Torino a/c setup, maybe the 134 would be ok. I'm in the Phoenix area, and really need cold a/c. Will need to buy a new condensor anyway. I have the new York style, but maybe I should get a Sanden. Too many decisions. And that isn't including all the "alternative" coolants out there. I'm open to any ideas. Russ
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Posted By: 7T9_Tbird
Date Posted: 25-September-2019 at 3:33AM
I had good luck years ago with a '84 Bronco using one of the "hybrid oil" conversion kits the sold at NAPA. It was a junk truck, which is why I wasn't afraid to try. But it did work. Just watch the pressure conversion chart(134a uses less pressure than 12, IIRC). We did a friends similar bronco, and six months later something under the dash let go. Looked like the inside of the truck was on fire. He used the 12 pressure instead of the chart number.------------- John 73 Gran Torino formal roof 79 Thunderbird Heritage 79 Thunderbird Town Landau |
Posted By: aquartlow
Date Posted: 25-September-2019 at 9:26AM
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Keep the original POA/STV if possible and have it adjusted for use with 134A, really makes a difference. ------------- www.supermotors.net/22468 Yeah, It's a Hybrid...It burns gas and tires. No matter how good she looks, somebody, somewhere, is tired of her sh*t. Beauty is skin deep, ugliness goes clear to the bone. |
Posted By: fordpower
Date Posted: 26-September-2019 at 1:03AM
| I know nothing about subject except my mac. replaced one part made up a connection flushed system and put in 134. This was back when we all went to Carlisle. 50 degrees at vent. last yr blew fuse think same thing this yr. |