[DeTomaso] R 12 conversions

[Jerry R Knotts]

Boyd,

Just came in from a show and shine about 50 miles away and ran the air all 
the way home.  I still have the old air unit which doesn't seem to be large 
enough to run 134 and provide sufficient cooling.  I have been running 
"freeze 12" in mine for about 10 years now without a problem.
Be sure if you have the original dryer to change it before doing anything. 
They become bombs after 30 years of internal rust and corrosion.

Best of driving cool,.
jerry


----- Original Message ----- 
From: "boyd casey" <boyd411 at gmail.com>
To: "De Tomaso List" <detomaso at realbig.com>
Sent: Tuesday, August 31, 2010 5:35 PM
Subject: [DeTomaso] R 12 conversions


> Hi everyone. Someone told me about an alternative  for R-12 refrigerant. 
> One
> was supposedly based on Propane )LPG).  My local mechanic also is
> advertising  a service that modifies your system to be able to  use R 134.
> They claim to purge the system of R12 , changing the fittings and then
> purging all the  freon and using a combination of oil and other chemicals 
> to
> completely   remove the old chemicals and replace them with R 134A ( after
> purging the system). They claim that this will allow your system to work
> without any other modification or replacement of parts (like the
> compressor). Is anyone familiar with this type of conversion or the use of
> substitutes for R12?. I have not tried to charge my system since I bought 
> my
> car ( approximately 3 years) I have several cans of R 12  and I have no
> signs of any leaks in the system. The car was sitting for several years
> before I bought it. The previous owner was deceased for some time prior to
> my purchase of the car.. The owner owned an auto parts business and  an 
> auto
> salvage business. He apparently was sick and out of commission and unable
> to  use the car much while he was sick.  Prior to the onset of his illness
> he apparentlty spent allot of money at Hall Pantera.  He had lots of Hall
> products installed ( stainless steel water tubes, Hall big bore headers 
> and
> mufflers,  stainless steel fire wall cover , pressure bottles and over 
> flow
> bottles. He also had several years worth of several year old Hall sales
> materials.. It doesn't prove anything but I would be inclined to think he
> had it functional. So ow that I have the car running with a degree of
> reliability I would like to have the AC functioning. If there is a way to 
> do
> it that is less expensive then replacing the compressor I would be 
> inclined
> to try the alternatives first. So any advice is welcome.
>
> Boyd
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