Re: IML: A/C ReVamp

[santiam oregon <santiamoregon@xxxxxxxxx>]

there is nothing wrong w/ the design of the 2 piston compressor. If you have a

good one, I'd leave it.  I doubt you would gain anything in efficiency by changing

mounts, and everything else to fit a rotary one.  If you have factory a/c, I doubt you

want aftermarket stuff on it. Buy a stock rebuilt one if yours won't pull suction when you put your thumb over the suction hole and turn the clutch.

 I have charged w/ R12, R134, and the refrigerants from Autorefrigerants.com.  They are all non-polar hydrocarbon solvents and work great.  I have used their standard refrigerant with very good success and recently I reordered and bought the industrial 12 version which is

charged at atmospheric pressure (not under a vacuum like the other one, or most refrigerants are.)  You don't follow the sightglass for these refrigerants, as they have different evap. rates than florocarbons (134) and chloroflorocarbon (freon 12), so if you go until the bubbles are gone, you have overcharged. 

 

R134 doesn't have the cooling capacity that R12 did, so your system won't get as cold. That is why the first few years of 134 cars didnt' work well until they upsized the evap and condensor coils. I have been dissapointed w/ 134 and only use it if someone requests it. (evap./boiling point is 15 degrees higher than R12), the hydrocarbons are lower than R12, so they generally produce colder temps at the vents. I have a tiny system on a Chevy Sprint 3 cyl. that produces 32 F air at the vents in 85-90 degree weather.

mmonsher@xxxxxxx wrote:

let's hear from the AC experts. Is it an easy conversion from R12 to 134a?
FOR THE CHRYSLERS 440 WITH the twin piston compressor/? Can a better
rotary compressor be used for efficiency(what brand and make) with the old
twin piston compressor saved for authenticity in the trunk! Someboy must
have been through this without an ac shop....

> I haven't used that exact refrigerant, but there is one call "Hotshot"
> by ICOR that can be found at any Aireco branch that replaces a broad
> range of refrigerants, including R-12 and 134A, it runs around $250.00
> per 30 lb jug. ----- Original Message -----
> From: "aeyn"
> To:
> Sent: Wednesday, June 27, 2007 4:56 PM
> Subject: Re: IML: A/C ReVamp
>
>
>> Sorry,
>> I meant for the last message to be OFFLIST - BUT Has anyone
>> used ES-12A, FREEZE 12, or INDUTRIAL 12 from:
>> www.autorefrigerants.com They are supposed to be just as cold as R-12.
>>
>> Æyn
>>
>> --- aeyn wrote:
>>
>>> Alan,
>>> I noticed that you had to revamp the a/c system. What was
>>> happening to cause you to revamp it? And what year do you have? Did
>>> you convert to 134a? What did you replace? I am wanting
>>> to
>>> revamp our 92 Grand Voyager and 93 Imperial, ALSO the 75
>>> Imperial. I need to do the Grand Voyager before September, as
>>> I
>>> will be needing to driving it to Laughlin from Tucson.
>>> What problems did you have with your ABS? We have only had
>>> our 93 officically since April 20th, but picked it up on May
>>> 18th
>>> (In Portland - Jim Lorenzen helped us get it.)
>>> Do you know where I can get the cup holder for the back
>>> armrest? Ours is broken. Also, where to get a change holder
>>> for
>>> the glove box? Ours is missing.
>>>
>>> Must be off for now,
>>>
>>> Æyn & Patrick
>>> Tucson, AZ
>>>
>>>
>>>
>>>
>>> --- alan1416@xxxxxxx wrote:
>>>
>>> > Hi Keith
>>> > Welcome great to have more 90' guys
>>> > I too have had fun with the ABS brakes, I have the Bendix
>>> > system I did get Chrysler to honor the life time recall on
>>> the
>>> > booster pumps. I have found that the ABS wheel sensors need
>>> to
>>> > be cleaned often. using a pad that makes less dust will help. I
>>> just had (LOTZ) fun replacing my whole AC system, boy is
>>> the
>>> > air box fun to work on
>>> >
>>> > --
>>> > Alan Jordan
>>> > 90 IMP
>>> > 75 LeBaron
>>> > 75 LeBaron Crown Coupe
>>> >
>>> >
>>> > -------------- Original message ----------------------
>>> > From: "Steve B."
>>> > >
>>> > > New Subscriber(s): Keith Beese
>>> > > Email Address is: charlesbeese@xxxxxxxxxxxxx
>>> > > Member Location: Blackwood, New Jersey 08012
>>> > >
>>> > > Car(s) owned: 1993 Chrysler Imperial white on white with
>>> red
>>> > leather
>>> > > interior and digital dash
>>> > >
>>> > >
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>>> > Chrysler
>>> > > Corporation cars. I am 47 years old and still single. I
>>> > work as a printing
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>>> been
>>> > a backyard
>>> > > mechanic. Love to fix my own cars and it's cheaper that
>>> way/
>>> > It works out
>>> > > well for me. Last year I bought a 1993 Imoerial that
>>> needed
>>> > some work done
>>> > > to it. I have most of it done with the exception of the
>>> > power brakes which
>>> > > are truly driving me crazy.
>>> > >
>>> > >
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>>>
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>>
>>
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