> Other question: In instruction for the compressor
> written it's suitable for R12 and R134a is it
> possible?
You will get a TON of opinions about R12 vs R134a on
this list, esp. now that cooling season is here. But
here's the facts: There is no direct drop-in
replacement for R12 as of this date. R134a can be
used IF:
The system is evacuated of all R12 and oil.
The filter dryer is replaced.
There are no leaks in the system.
The system is drawn down to a 30" vacuum, or about 500
microns.
You then charge the system with R12 mingled with the
proper oil. Pep Boys sells both R134a and the proper
oil...ask them to find out what oil to use (I
generally work around R22, a commercial refrigerant,
so I'm not up on the proper oil to use)
Some people will tell you that they've just charged up
R12 systems with R134a and "it works great". I don't
dispute their experience, but they are rolling the
dice- it may work, but it shouldn't, and there will
probably be long-term problems. The oils aren't
compatible, the refrigerants themselves have different
properties, and God forbid they ever take it to a
professional to have any work done on it.
Also, some converted cars don't cool as well with
R134a, because its condensation point is higher than
R12. But, on an Imperial which already has a hugely
over-designed cooling system, it isn't a problem. I
replaced the filter dryer, compressor, and clutch on
my '67, had a vacuum drawn and charged it up with
R134a and it cools very well.
=====
--Mike Pittinaro
My girlfriend left me
My trusty Imperial
Remains more faithful
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