Re: [FWDLK] Old A/C

[Rog & Jan van Hoy <vanhilla@xxxxxxxxxxxx>]

Is the distiction between '56 and earlier, with the A/C in
the trunk, and '57 and later, with everything under the
hood?  Maybe more pressure was needed for the trunk systems?

My '54-'55 DeSoto FSM states, "The air conditioning system
(Fig.1) for the S-19 models [1954] uses Freon 22 as the
refrigerant charge." ... "The DeLuxe air conditioning system
(Fig. 19) used on the S-21 and S-22 models [1955] is
considerably different than the types previously used.  The
refrigerant now used is Freon 12 (F12)."  There's a lot more
technical differences.

--Roger van Hoy, '55DeSoto, '42DeSoto, '66Plymouth,
'73Duster, '81 Imperial, Washougal, WA


----- Original Message -----
From: "Jack Johnson" <johnaire@xxxxxxxxxxx>
To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
Sent: Monday, July 08, 2002 10:15 PM
Subject: Re: [FWDLK] Old A/C


| I have been in the A/C trade for 34 years retiring about 2
years ago.  Back
| in the early 70's I worked for a man who done automotive
A/C and we repaired
| quite a few, but no 50's models.  I don't remember ever
hearing having R-22
| in any vehicles-just R-12.  Head pressure wise, R-12 has a
normal operating
| head pressure of 125 + while R-22 has about 225 + Lb head
pressure. It would
| seem to me that the R-12 would have been used in all
vehicles due to the
| excessive pressures, but as we all know anything probably
can happen and may
| have happened.  And I would nnot doube that it may have
been tried at one
| time or another.  All the ones I worked on were R-12.  Are
there any
| documents stating R-22 in an automotive air conditioner??
| Jack Johnson  Shinglehouse, Pa
|
|
| ----- Original Message -----
| From: Mike Sealey <mopar2ya@xxxxxxxxx>
| To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
| Sent: Monday, July 08, 2002 11:35 AM
| Subject: Re: [FWDLK] Old A/C
|
|
| > --- JASON ROGERS <ljrogers@xxxxxxxxxxxx> wrote:
| >
| > > Are there any vintage-A/C experts out there (not
| > > Vintage Air aftermarket, but "vintage" as in '1954
| > > through the Forward Look years)?  I was surprised to
| > > learn that in '54, the first year for Chrysler's
| > > factory A/C system (as was available for the
| > > Imperial) the refrigerant was R-22 - household
| > > A/C refrigerant!
| >
| > I'm nowhere near being an expert, not even very
| > knowledgeable about A/C, but in a twisted way I can
| > see how this would've happened. Logically enough,
| > Chrysler gave this project to their Airtemp division,
| > which built A/C systems for homes and office
| > buildings. (Legend has it that Airtemp Division was
| > created in part to give Walter Jr. something
| > non-automotive to do, and partly because WPC Sr. was
| > less than happy with the system the Chrysler Building
| > was built with.) It makes sense that the Airtemp staff
| > would be familiar with R22, and that they would
| > continue using it. I think the '57 and later
| > compressors and other components came from an outside
| > supplier, and it makes sense that the specs would
| > change at that time.
| >
| > I'd be interested to hear if Frigidaire and Kelvinator
| > played similar roles in the development of the GM and
| > Nash/AMC A/C systems.
| >
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| >
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| >
|
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