help with air condition

[paflores9]

hello I was wondering whats the best thing to do?
I have to recharge my A/C but i was toll that i have to change from r12 to like r134 or someting like that.

sorry but i now nothing in terms of air conditioning.

[Neo_omega]

I think they don't sell r12 anymore coz it kill the ozone. If I remember correct, r134 is ok. But then again, my CB AC quit working a while back.

[4U2H8ME]

R12 can still be found but, it's hard to find and a lil pricey. As far as the conversion, it's 2 replacement valves that fit over your exsisting ac valves. they need to be installed with the system empty, your exsisting valves have to have the pins removed before you install the new ones. The valves cost anywhere from $5.00-$10.00 for the pair.

[paflores9]

ok so that why. i have to use R134.
Also is there anything i have change or modified on the A/C system to be able to use R134?

[paflores9]

thx 4U2H8ME
sorry to many questions but how can i empty the system?

[Neo_omega]

thx 4U2H8ME
sorry to many questions but how can i empty the system?

find an empty open place and make sure no cops around

[cloudasc]

Do not go 134a, yes it will work, but only to about 60-70% efficency compared to r12. The better thing to use is called Freeze-12, its practically identical in molecular structure to r12, but it doesn't contain the ozone eating chloro-flouro-carbons. Enough R12 to recharge your system will run around $300, enough freeze-12 is about $70.

[Neo_omega]

Do not go 134a, yes it will work, but only to about 60-70% efficency compared to r12. The better thing to use is called Freeze-12, its practically identical in molecular structure to r12, but it doesn't contain the ozone eating chloro-flouro-carbons. Enough R12 to recharge your system will run around $300, enough freeze-12 is about $70.

need to do the same as R134? like empty the system and mod the valves?

[ExplodingCake]

ok so that why. i have to use R134.
Also is there anything i have change or modified on the A/C system to be able to use R134?

You need R134 fittings

[deevergote]

Do not go 134a, yes it will work, but only to about 60-70% efficency compared to r12. The better thing to use is called Freeze-12, its practically identical in molecular structure to r12, but it doesn't contain the ozone eating chloro-flouro-carbons. Enough R12 to recharge your system will run around $300, enough freeze-12 is about $70.

Can Freeze-12 be run with the r12 valves? Or is there a need to upgrade the system as you would when converting to 134a?

[C91BLX7]

r134a worked fucking great the last two summers in my car with a half ass charge and leak.

It was efficient. On a hot humid day when the A/C would kick on steam would pour out the vents like opening a freezer.

[deevergote]

I haven't had working AC in my CB7 since 2003. The AC compressor is going to be replaced by another sort of... kompressor... very shortly.

[foamypirate]

I haven't had working AC in my CB7 since 2003. The AC compressor is going to be replaced by another sort of... kompressor... very shortly.

Your Mercedes based pun has not escaped everyone.

[Patchouli007]

While 134a is cheap and many vehicles can convert R12 is much colder. I am fortunate to have a still good AC system on my 90. I converted my 84 supra and have had nothing but issues with it. I have heard of people with supras that the compressor dies do to lack of lubrication. Most of the 134a products include this or offer an additional product that will lubricate the compressor. If you can avoid it I would not covert, but it is a lot of money to keep R12.

[cloudasc]

Can Freeze-12 be run with the r12 valves? Or is there a need to upgrade the system as you would when converting to 134a?

Freeze-12 can be run with your r12 valves no problem.




Also 134a requires more airflow through the radiator in order to cool as efficiently as r12, thats why 134a systems have a seperate radiator dedicated to it. Esther oil (i believe thats what its called) is what you use to retrofit an r12 system to 134a. You also never want to get r12 & 134a mixed together, or it will cycle your compressor on/off till it burns out its clutch.

I just found out there is also another product that can be used in both r12 & 134a systems, that works even better then the true formula for either one. Its called Industrial 12a. I have also heard of people using propane instead of freon.