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Convert AC R12 in to R1234YF anyone???

Old 06-08-18, 05:25 PM
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Convert AC R12 in to R1234YF anyone???

I have to fix a leak in my AC, I was still running R12. i'm thinking about convert to the new gas R1234YF. Anyone have ever heard this on an RX7?

In the USA is common R1234YF?

Thanks
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Old 06-08-18, 08:23 PM
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I would advise against 1234-yf. The RX7 system is in no way optimized for that refrigerant. 1234-yf is also extremely expensive and mildly flammable. Stick with an r-134 if you are wanting to upgrade.
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Old 06-08-18, 09:58 PM
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Buon giorno, pietrino!

Read this link from the 2nd Gen forum on a potential R-12 replacement. The FC guys use it, basically canned air to dust off computer parts, etc... To be honest, I have not done this to my FC or FD yet.
https://www.rx7club.com/2nd-generati...gerant-964688/

Ciao,
George
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Old 06-09-18, 09:14 AM
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I've done the dust-off conversion, works great. That's an awesome way to go. Read through that thread and take notes, there's a lot of info in there but it's spread out.

Dale
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Old 06-09-18, 10:14 AM
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Thank you for that positive feedback, Dale!

Would you recommend a new thread in the FD forum that highlights the lessons learned from the FC's and any differences unique to the FD? It's been a while since I've read that thread and it would be nice to have a concise how-to guide. Or perhaps that FC thread could be updated to reflect the lessons learned and applicability to the FD and/or the FB?

Cheers,
George
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Old 06-09-18, 05:02 PM
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I'm actually doing the AC conversion on an FC right now, I pulled all the components today to clean out and go through them all.

But, yes, a dedicated thread would be a good idea.

Dale
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Old 06-09-18, 09:58 PM
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So wait... the canned air dust off thing I can get for 6,99 for a pack of 3 at walmart can be my r12 alternative??
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Old 06-10-18, 08:01 AM
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kensin,

Yes, it may be used as an alternative to R-12. Read through the entire thread in the FC forum for more information. Certain steps are required to prepare the system. Did this news just make your day?

Cheers,
George
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Old 06-10-18, 03:39 PM
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Thanks to everybody for the answer.

Today the AC started again, so may be i have time to study.

I guess that the air duster could be different in Eu than in the USA may be i have to make some research.

Thanks DaleClarck confirming that it could be done on an FD.

Grazie George ;-)

Ciao
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Old 06-10-18, 07:32 PM
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Prego, pietrino!

One word of caution about your AC: If your AC started to work again then it may be a sign of low pressure. Was the weather hotter today than it was the other day? You may recall from science class that a gas will expand when the temperature increases. Your AC system may be at that limit. It may work when it's hotter but when the temp is cooler, then it will not work. It does sound like you have a slow leak.

Do you have any repair shops near by who can repair and refill R-12 systems? As a reminder, R-12 has not been produced since the early/mid-90s. In the US, people may still purchase NOS (new old stock) cans of R-12 but only with approved licenses. However, R-12 is traded like a commodity. Therefore, the price of R-12 varies from day to day. It is equally rare to find a repair shop in the US that can reclaim R-12 and service those older vehicles. You may have to hunt for the right repair shop to work on R-12 systems.

Other advice when working on AC systems: some special tools are required. For example, a vacuum pump with R-12 fittings. The fittings may be a controlled item and may require a license to purchase. The vacuum pump will evacuate the AC system and hold a vacuum (if there are no leaks). If your system has any amount of R-12 then it must be reclaimed for environmental reasons. Do NOT purge it into the atmosphere! You also must have the proper O-rings and proper oil to keep the system lubricated.

If you plan to do the dust-off conversion yourself, then it may be wise to get a new receiver-dryer. That is the narrow and tall cannister that sits next to the stock battery location. You may also want to visually inspect the condenser (located in front of the car's radiator) for any cracks or leaks. Check the low corners really well for debris - leaves, twigs, and dirt. These items may cause holes when deposits form over many years.

Lastly, the BEM (Body Electrical Troubleshooting Manual) discusses AC and heater repair in good detail. Refer to Section G of the BEM for more information.

Ciao,
George
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Old 06-12-18, 05:13 PM
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Thanks for all the advice Geoege,
​​​​​​i will not make any pollution relasing gas on airair. I promess.
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