[Supras] MKIII AC - Retrofit or not to retrofit.

[Harley]

I did my 87NA with out replacing any thing. I had my mechanic vacuum all of 
the R12 and oils out of the old system then he filled it up with 134. I just 
happen to get lucky and have absolutely no leaks. That's actually very lucky 
since in most cases you would have a shot O-ring at the least. It blows cold 
enough. It doesn't blow as cold as a newer car but it blows cold enough to 
cool the car to the temperature set on the climate control.

- Harley(87t)
----- Original Message ----- 
From: "supraman88" <supraman88 at verizon.net>
To: "D P" <darnsuprat at hotmail.com>
Cc: <supras at supras.com>
Sent: Friday, April 13, 2007 11:09 AM
Subject: Re: [Supras] MKIII AC - Retrofit or not to retrofit.


> R-12 is EXPENSIVE!!!! (I could have bought 30 LBS for $80 a couple years
> ago; ass hurts from kicking myself...)
> I thinks now it's at least $30 a pound...
>
> If you have the system completely evacuated...totally and flushed and
> evacuated again, you may get by. The killer is that the oil in the R-12
> is not compatible with R-134, so ALL the oil has to come out. You'll
> probably need a new Receiver-Drier, also, but I have seen people get
> away without doing this.
>
> But that's the real key...getting ALL the R-12 and the oil that goes
> with it out. You have a '92; IIRC that was one year before the
> changeover, so the compressor will probably work with it. But it doesn't
> get as cold, and the trick to use R-134 was to put in a larger
> compressor for the same size car.
>
> Hope this helps a little...you'll need a trustworthy shop that can get
> ALL (did I stress that enough? ;) the oil and R-12 out, you should be OK.
>
> The idea here is to NOT spend an arm and a leg: this service should be
> ~$120 or less. Any more and consider changing the compressor. As long as
> you can do it on the cheap (<$80 or so), pay your money and take your
> chances. Anyhting over $100, get the compressor...they're about $250
> from CarQuest or AutoZone.
>
> Good Luck!!
>
>
> (I just did some checking...I found a 30LB tank for $577 ($19 a lb) and
> a 50 LB tank on E-Bay for $356 inc shipping w/3 days to go)
>
>
>
> D P wrote:
>> Bob and group, I need some help in deciding which way I should go in 
>> fixing
>> the A/C on my 92T.
>>
>> Cost is not my first option, I want a fix that will be the least costly 
>> in
>> the long run.  I'm a bit leary on the retrofit after reading on the list
>> where the conversion could lead to compressor failure etc. if not done
>> correctly (re: Mike Lewitz's advise from a while back).
>>
>> I'm thinking if I keep the R12 system and just fix it correctly now, 
>> it'll
>> last me a good while.
>>
>> So, please help me decide which option I should choose from below:
>>
>> First Option.
>> I found a shop that will charge me $65 for the first lb of R12 then $10
>> after that to charge up the system and check for leaks at no extra 
>> charge.
>> I figure I'll then fix the leak myself and have the system vacuumed and
>> recharged again.
>>
>> Second Option.
>> Found another shop down the road from my house that will change me just 
>> for
>> the parts, freon and oil to retrofit the system to R134a.  The owner 
>> lives
>> in my neighborhood and said he'll "take care of me".
>>
>> Which should I do?  Help, please!
>>
>> Darren
>> 92T 5-Speed White Package
>> Canadian Model in Florida
>>
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>
>
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