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Re: Help! R134 is the pits (hope you're not too sick of this topic!)



Got em and the little vacuum pump too, call me anal.

Brian
----- Original Message -----
From: "Gerry Reichelt" <greichelt@mmcable.com>
To: "Scirocco List" <scirocco-l@scirocco.org>
Sent: Thursday, October 04, 2001 5:34 PM
Subject: RE: Help! R134 is the pits (hope you're not too sick of this
topic!)


> Well said. Another reason for drawing a vacuum is that it also checks for
> leaks. Only thing is, you have to have gauges for 134a (different
fittings)
> or you can't check your pressures.
>
> Gerry Reichelt
>
> -----Original Message-----
> From: owner-scirocco-l@scirocco.org
> [mailto:owner-scirocco-l@scirocco.org]On Behalf Of Brian Wagner
> Sent: Thursday, October 04, 2001 8:31 AM
> To: tberk@mindspring.com; curtv@eudoramail.com
> Cc: scirocco-l@scirocco.org
> Subject: Re: Help! R134 is the pits (hope you're not too sick of this
> topic!)
>
>
> Alright I have been watching this topic long enough now it is time for my
> .02.
>
> The r134a conversion when done right cools just a effectively as the old
> r12.
>
> 1)Items that should be replaced when doing this to ensure total efficiency
> are the receiver/dryer, expansion valve and new oring seals at all the
> joints. Also you should flush the condensor (in front of the radiator)and
> the evaporator (in the air exchager in the car), this removes the r12
> mineral oil based lubricant (does not mix with new synthetic PAG oil) if
> mixed it will eventually gel and plug up everything. After the system has
> been flushed install the receiver/dryer and expansion valve, imediately
draw
> a vacuum on the system if not the receiver/dryer will become saturated (it
> is a desicant, removes moisture from the system). At this point you will
> then add 8 fluid ounces of pag oil and 34 to 36 oz. of r134a (yes this is
> 10% to 15% less than the r12 factory recommendation) this due to the
> different expansion rates of the gases under pressure. Low side pressure
> underload of the compressor should flucuate between 35 and 60 psi,
highside
> between 170 to 220psi. When all this is done you will blow very cold air,
I
> did this to my wifes car and with the outside air temp of 98f the vents
were
> blowing 59f almost 40 degrees different and thats in Texas.
>
> the parts needed were cheap
> receiver/dryer - $18 German Auto Parts
> expansion valve  $31 same
> oring kit - $7 local supplier
> r12 to r134a conversion kit - $29 at kmart (or store of your choice) this
> includes pag oil, r134a, fill hose and r134a adapters
>
> You can do the whole system in 1 to 2 hours based on skill, and do all the
> work yourself. Except maybe the vacuum, take it to your local garage and
> they can do that for like $20. When r12 is currently going for $60 to $70
> per 12oz's this conversion is much more cost effective.
>
> Don't be such wussies and get it done.
>
> Brian
>
>
>
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>
>

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