My A/C needs a recharge. I'm thinking of converting. Does 134A blow as cold as R-12, in a 62? Or should I keep R-12.
R-134A Conversion
- Thread starter scubasteve
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134a in a system designed for R-12 will not get as cold as if running r-12.
The 'swap over' kits ( 50 ish bucks) will get your A/C working . . .
If you need R-12 cause of a leak, R-134a will leak faster (smaller molecule); so be prepared to top-off more often.
The 'swap over' kits ( 50 ish bucks) will get your A/C working . . .
If you need R-12 cause of a leak, R-134a will leak faster (smaller molecule); so be prepared to top-off more often.
What are newer vehicles running? R-134a?
Did you change the oil in your A/C pump when you made the switch from R-12 to R-134a?
That might be the reason you didn't get the A/C to blow cold....
Did you change the oil in your A/C pump when you made the switch from R-12 to R-134a?
That might be the reason you didn't get the A/C to blow cold....
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srplus
Walked with the Dinosaurs
12a
can anyone succinctly explain in one post this refrigerant issue and solutions for fj60 & 62’s. R12, HC-12A, R-134A… what can replace what or not and how... that actually knows. relative benefits and / or deficits of all strategies except ripping it out... Past posts & my AC guy have me nuts… and if you think hell is hot, at least it’s not as humid as tallahassee.
i have original system that hasn't been modified but is now in need - cool but not cold… have heard so much on both sides of the issue that i am getting confuseder and confuseder... not an unusual condition for someone as old as i am who did a lot of drugs as a child. problem is, my memory is so bad i can’t even remember if i enjoyed them. or even, if i inhaled.
And THEN; we can make a FAQ. and plz DO NOT tell me - search. been there. done that.
thanx
can anyone succinctly explain in one post this refrigerant issue and solutions for fj60 & 62’s. R12, HC-12A, R-134A… what can replace what or not and how... that actually knows. relative benefits and / or deficits of all strategies except ripping it out... Past posts & my AC guy have me nuts… and if you think hell is hot, at least it’s not as humid as tallahassee.
i have original system that hasn't been modified but is now in need - cool but not cold… have heard so much on both sides of the issue that i am getting confuseder and confuseder... not an unusual condition for someone as old as i am who did a lot of drugs as a child. problem is, my memory is so bad i can’t even remember if i enjoyed them. or even, if i inhaled.
And THEN; we can make a FAQ. and plz DO NOT tell me - search. been there. done that.
thanx
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Also, what is "Freeze 12" refrigerant?
srplus said:
R12 isn't sold anymore though you can still find it occassionally. If you can, have someone who knows what they're doing use it in your truck.
If you can't find R12 use HC-124A and retrofit using new fittings. To get your AC running cold don't just add a can or two since you don't know what you already have. The system should be evacuated before being refilled.
Spend the money and have someone who knows what they're doing set you up correctly. It's will be worth it.
HC-124A doesn't produce the cold air that R12 does but it's just a matter of degrees (pun intended)
My 62 is putting out 48 degrees whereas with R12 it would be closer to 42 from what I understand.
Okay srplus, that's my understanding but I'm as old as you and have the same memory issues
srplus
Walked with the Dinosaurs
pretty much got that
need relative costs vs benefits / deficits of each... one AC guy is for the switch to new hc - 12A, but seems to have little experience with it. an AC / Refrigerant guy who does walk in coolers says to bite the bullet and insure there are no leaks and use the old R12 and the heck with the environment since my one car if it leaked would be less than a 'pee in the ocean'. another guy thinks it would be best to go with the r-134a. think i misposted the #'s redcruiser quoted previously so i went back and edited them. i think #'s are correct now.
still trying to figure it out.
need relative costs vs benefits / deficits of each... one AC guy is for the switch to new hc - 12A, but seems to have little experience with it. an AC / Refrigerant guy who does walk in coolers says to bite the bullet and insure there are no leaks and use the old R12 and the heck with the environment since my one car if it leaked would be less than a 'pee in the ocean'. another guy thinks it would be best to go with the r-134a. think i misposted the #'s redcruiser quoted previously so i went back and edited them. i think #'s are correct now.
still trying to figure it out.
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srplus said:
I won't edit mine to align with yours but will let someone else chime in to answer your questions more completely.
I have been using the Freeze 12 for a few years now in my 60 and have never had a problem with it blowing out really cold.
r-12 is still sold, but only by permit not to general public.
I don't think it's made in the US anymore (as is R-22 home a/c refrigerant)
48 degrees would be 10% better than "2 x 55" a/c here in Tucson where daytime temps are 100-107 this week.
I don't think it's made in the US anymore (as is R-22 home a/c refrigerant)
48 degrees would be 10% better than "2 x 55" a/c here in Tucson where daytime temps are 100-107 this week.
R12 convert to 134a
you can change your refrigerant to 134a without problem and 134a is cooler than R12 ,what you have to do is
- change compressor oil to 134a
- change evporator valve ,pls use DENSO 134a valve
- never use any replacement refrigerant ,if not your a/c system will be high pressure and compressor life will be short .
you can change your refrigerant to 134a without problem and 134a is cooler than R12 ,what you have to do is
- change compressor oil to 134a
- change evporator valve ,pls use DENSO 134a valve
- never use any replacement refrigerant ,if not your a/c system will be high pressure and compressor life will be short .
R-12 is $30 a pound.
I have used Freeze 12 for a year or so and it blows ice cold typically (of course, my compressor just died on me but I think the two are unrelated). Overall, I think it is awesome stuff.
It can go into an existing R12 system and is a direct swap with R12. You don't have to replace any parts or buy a kit (although you should always replace o-rings and your dryer any time you open up your A/C system). It also runs something like $ 8/lb. R12 costs around $ 40-60/lb (I have heard otherwise, but have never seen it for cheaper).
Just my $ .02.
It can go into an existing R12 system and is a direct swap with R12. You don't have to replace any parts or buy a kit (although you should always replace o-rings and your dryer any time you open up your A/C system). It also runs something like $ 8/lb. R12 costs around $ 40-60/lb (I have heard otherwise, but have never seen it for cheaper).
Just my $ .02.
I just recharged with Red tek 12a. It blows COLD 38-42 degrees
It is a hydrocarbon (propane like) and that scares some guys off. We have been using it on the farm for years with no issues.
The biggest thing about recharging your sytem is evacuating the old "stuff" I borrowed a vaccum pump from a friend and evecuated for over an hour and pulled 20hg. This will also tell you if your system has a leak. If it can hold vaccum it will hold pressure.
http://www.redtek.com/
It is a hydrocarbon (propane like) and that scares some guys off. We have been using it on the farm for years with no issues.
The biggest thing about recharging your sytem is evacuating the old "stuff" I borrowed a vaccum pump from a friend and evecuated for over an hour and pulled 20hg. This will also tell you if your system has a leak. If it can hold vaccum it will hold pressure.
http://www.redtek.com/
Cruiser mechanic at the shop next door says he can charge my system from the little cans. He's on vacation until next Thursday, but his boss says .6-.8 Kg sounds low. I just ordered 6 cans of HC-12a just to be sure. I'll get my '84 recharged in about a week & check in then.
euclid
SILVER Star
My R134 converted 62 will blow mid 40's at the vent running down the highway with a 90 degree ambiant temp with 80 % humidity. It takes forever to cool the truck off, but it's still pretty cold considering everything.
