DJAngelicon

Hey guys. I got the conversion for my A/C from R-12 to R-134a at Schuck's. Anyways, I was wondering what dose the "S" and "D" on top of the compressor stand for?

Also, which one of those do I use in order to recharge my A/C?

Thanks In Advance!

-Angel

DJAngelicon

I guess not many people here have stock A/C on their FBs. =/

skrewloose78

S=suction
D=discharge

the s is the low pressure side,which is where you charge the system. the d is the high pressure side

DJAngelicon

Thank you so much "skrewloose78" Thats pretty much what I wanted to know. Now hopefully my system dosen't have any leaks and I can recharge it first thing in the morning. Any advice on what should I do before I do the recharge and after?

capt murph

After the recharge go for a ride and see how it works.

skrewloose78

^yeah what he said^

how long has the system been down? has it been open?it would be a good idea to change the receiver/dryer or orfice tube(whichever type this car has,its been a long time since i had an rx7 with working air) and pull a vacuum on the system to get all impurities out and to check for leaks

DJAngelicon

I didn't do anything just put the first tank that have oil, lubricates and fixed any leaks if there is some and have a A/C Boost on it. That one worked and then I put another bottle for high milage engines and now the A/C works perfectly and is pretty darn cold. I guess is for now I will leave it like that.

Thansk guys for your advice!

-Angel

capt murph

The 84 I picked up about 1.5 yrs ago. had a flat system. Last night I put some oil and some R-12 in and it seems to be working fine. How long it will stay is anybody's guess. But it sure is nice!!!!

OT ...Did you know that in commercial A/C systems, chillers of 50-400 tons, substituting R-134a for R-22 decreases the capacity by 36%? I do not recall what the decrease is on R-12 systems. Many users think that by converting they are doing something "green' for the environment. However, on a drop in situation, the 36% capacity reduction requires the chiler to run much longer and use much more electricty, so the overall effect is actually a loss in 'green' terms.