So ive had around 28 or so cars less than 5 or so have had functioning ac lol, Usually ill pull all of the ac crap out just to clean up the engine bay but this time i want to do things rite i currently have a mkiv supra that about to under go a build and finally bought another sc to make a daily. This summer is proving to be a hott one so far and my 10 minute drive in 95 degree weather today made me say damn i want ac...

Heres where I start. The sc i just bought is a 92 wich has the r12 comp on it that is locked up. i have a 134a comp sitting in my garage off my supra when it was a ge and im almost certin it works... i know its not locked up anyways. I also have a 94 parts car that im pretty sure has a good compressor on it aswell.

MY QUESTIONS ARE
can you replace a r12 comp with an 134a one? like will the lines mate up?
If not is there any way to make this work?
What are my optioms i really want ac but i dont wanna go the r12 rout that stuff is expensive and so is a new comp. I work in a hvac warehouse and im prety sure i can get the 134 gas for free not to mention i have 2 134 compressors so no cost there aswell. Im completely clueless when it comes to ac systems. what are my options as far as making my r12 car work with 134 using a 134 comp with all r12 stuff? Im hoping every one isnt going to tell me to change the whole system over lol.

 

per TSB AC001-98, you need the retrofit adapters for the nipples, new o-rings for the discharge hose and the receiver (and a new receiver, of course)
no need to swap compressor.

Since the o-rings are probably some special size, here's the part numbers:
90099-14046 discharge pipe o-rings (need qty. 2)
90099-14044 Reciever o-rings (need 2)

It also says to use ND OIL 8, but Toyota seems to think it's synthetic gold. Reading around. PAG 46 seems to be a suitable replacement (and is readily available).
Per TSB: Sc300/sc400 use 150cc of oil, charge is 900g

edit: updloaded TSB

 

Im tring to avoid the $300 bucks for a new r12 compressor since i beleave mine is bad, i have 2 used but working r134 compressors in my garage , thats the reason i was wanting to use on of them.

I got the r12 comp off tonight and sat it next to the 134 comp and there is alittle guidance nub where the lines blot to the compressor that is silghty located diffrent =( Is there any way at all to use the r134 compressor. I have a wrecked 94 sc300 in my driveway aswell i could get lines off of but the condensor is trashed i dont wanna keep trying to pull all of this apart to get nothing working =( Someone help on this please surely someone knows something

 

i'm selling a r12 compressor and this kid asked me the same Question. yes you can make it work, just take a trip to autozone and buy all the O rings and different lines for the 134 . if it doesn't work return it.. or hit me up i have a r12 if you want... my swap came with extra parts.. mine is garantee to work or your money back.. if you have paypal.. $100