I currently have a 93 converted to r134a in my system but I was wondering if I should change?
A/C is perfectly fine on the highway, but at stoplights in the city gets kind of warm
I think it may be due to the koyo radiator?

anyway, i heard this es12a stuff is cold, anyone have any feedback or think this may not be worthwhile?

 

I will say this.... SEARCH



John

 

I searched this entire board for es12a and nothing comes up
let me try searching for 12a then if this has been discussed to death

 

There is a thread by theorie discussing it. Look up his thread. Hint: it does not have es-12a in the title.



John

 

Dude this is so annoying. Why even post at all? When I try searching for things, I come up with say, 20 threads, and 18 of them are all of people saying "search". In the time it took you to write those two replies, you could of just linked him to the thread you were talking about.

Anyways OP, I am trying to get my A/C up and going and have been reading about es-i12a and different refrigerants. I have a few more threads saved on my CPU at home that I can post later, but for now, here is a good start:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/recharging-c-options-opinions-needed-959485/

 

There is a GREAT thread about this in the second gen section:

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/c-charging-easy-cheap-safe-alternative-refrigerant-964688/

Try 152A.







^^^ Got it at FRY's. 3 Pack for 12 bucks.

 

thanx for the replies
looking at those threads, jack seems adamant about using freeze 12 instead
I'll have to read up some on that
I need all my can dusters for dusting my computer lol

I have another issue, if anyone knows

my car engine dies on rapid RPM deceleration with the A/C on
could this be due to the r134a?
I have a light steel flywheel and stock ECU, though, which I assumed was the problem
can a PFC solve this issue?

anyway, I would like the A/C to be a bit colder so I will try something soon

 

There are not many discussions of ES12A.

However, what not use R12? Despite rumours to the contrary, it is easy to find and is not $1m per oz.

 

^^^

Freeze 12 is about $26 a can at NAPA.

R12 is $50 a can at O'Reileys (if you have a license - I got my license online for $20 several years ago).

 

It can also be bought on eBay without a license for about $50 for two cans.

 

If you're going with the ES12 then I suggest the industrial ES12. My system is now very cold (after troubleshooting dang mix air door) now. Supposedly this stuff is even colder by few degrees then regular ES12.

Good luck.

 

Read this thread https://www.rx7club.com/3rd-generation-specific-1993-2002-16/c-gurus-what-say-you-about-freeze-12-a-664882/

And buy your industrial es-12a from here http://www.autorefrigerants.com/

IMO - don't bother with anything else unless you can get R12. Even then, ES I-12A is easier to charge.

 

I went 134a and have had no problems. Id just get a conversion kit from online and convert it back to what you want.

 

R152 is listed as factual"highly flammable" moreso than the es12a propane mix. That thread that advocates its use is ridiculous.

 

R134 is a lousy refrigerant for a lot of reasons; there are many better options. I've expounded upon this in several threads in this section. Just about any other refrigerant will outperform R134a unless the system has been specifically designed for it. Most R134 conversions will eventually give you problems.

I haven't read the thread that you've referenced, but it's really a mute point--since virtually all the oxygen has been (or should have been) removed from the a/c system during evacuation. It really doesn't matter what you put in there in so long as it doesn't contain air or O2. FWIW, R134a ignites at a lower temp than propane when under pressure. And in a fire, would you rather have the refrigerant burn off or have it form phosgene gas as chlorofluorocarbons (e.g., R12, etc.) do when they are exposed to an open flame. Hmmmm.


My first choice for the FD is es-i12a (the industrial version, hence the 'i') Second place goes to R12. The ES will give R12-esq performance, however; it does so using noticeably less power from the engine.