2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

AC system retrofit

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Old May 6, 2022 | 05:26 PM
  #1  
miatagyuy69's Avatar
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From: Mars
AC system retrofit

All I have of my ac system is a compressor and the fan. The condenser was mangled, and the PO said the AC system didn't work. Of course .

So, the only part I have now is a compressor that I don't know works or not. What I do know is that the AC lines for the compressor and the firewall have been exposed for who knows how long. I would like to install an AC system, but I want to use r-134a or another refrigerant that is better for the environment. Some people I heard say on this forum that converting a stock system to r-134 is a terrible idea that will break it. So, is this true? Should I just find a complete used system, refresh the seals and convert it to r-134? Or should I source an entirely new system from the ground up? What are my options here? Not only is R-12 impossible to find, I want a refrigerant that isn't as nasty to the environment. Additionally, I have found very little information and parts in terms of AC system work online. It's summer in Cali, so I'm willing to fork over the cash, and I have time to spend.

Thank you all for the help.
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Old May 7, 2022 | 06:02 AM
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Turbonut's Avatar
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Don't have time right now as the power to the house and garage just went out, but take a look at jackhild59 posts.
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Old May 7, 2022 | 08:00 PM
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I had my AC compressor rebuilt. Added 3 oz of ester oil into it. put the system into a vacuum to verify integrity and filled it with 1.5 cans of R152 Duster gas using a side tap can tap from amazon and some old R22 gauges I had laying around with a quick connect adapter on the low side. Seeing around 44f from the vents in Florida summer while cruising and compressor sounds great and quiet for about 2 years now.

Have fun!
-M

https://www.rx7club.com/1st-gen-arch...-997918/page4/





Last edited by Relisys190; May 7, 2022 at 08:08 PM.
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Old May 11, 2022 | 05:25 PM
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Originally Posted by Relisys190
I had my AC compressor rebuilt. Added 3 oz of ester oil into it. put the system into a vacuum to verify integrity and filled it with 1.5 cans of R152 Duster gas using a side tap can tap from amazon and some old R22 gauges I had laying around with a quick connect adapter on the low side. Seeing around 44f from the vents in Florida summer while cruising and compressor sounds great and quiet for about 2 years now.

Have fun!
-M

https://www.rx7club.com/1st-gen-arch...-997918/page4/



Where would you recommend I search for a compressor rebuilder? My S5 verts compressor is seized and I had to cut the belt off as it was causing the belt to smoke.

Only reason I am asking for general shop finding tips is since I live in Canada and there are fewer options available to me.
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Old May 11, 2022 | 09:02 PM
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I stumbled upon a shop locally that rebuilds them. If shops are scarce around your area, you may have better luck finding a new compressor online.

-M

Originally Posted by PnoyRx7
Where would you recommend I search for a compressor rebuilder? My S5 verts compressor is seized and I had to cut the belt off as it was causing the belt to smoke.

Only reason I am asking for general shop finding tips is since I live in Canada and there are fewer options available to me.
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