R134a retrofit questions?

[Dave Yentema]

What is the compressor cutout set to stock? And how do you go about 
adjusting it?
----- Original Message ----- 
From: "David Ullrich" <david.ullrich at gmail.com>
To: <quattro at audifans.com>
Sent: Thursday, October 23, 2008 11:09 AM
Subject: Re: R134a retrofit questions?


> Wel, I've never owned a type$$ but on my old type85, I did the conversion
> that way and it worked great. The key was putting in only about 75% of the
> equivelent r-12 charge then slowly (VERY SLOWLY) adding more while
> monitoring vent temps. When vent temps bottomed out, stop adding. I also
> adjsuted the comrpessor cutout thermostat so that it didnt cut out until
> termps hit 33*F...ended up with vent temps of about 35*F...nice and 
> chilly.
>
> Dave
> -Audiless for now
> -Wanted: CGT Triple White
>
>
> On 10/23/08, John Cody Forbes <cody at 5000tq.com> wrote:
>>
>> Others may have different results, but every time I've tried 134a in any 
>> of
>> the 4 5000's that I've owned (that had working A/C bits) I've been so
>> dissapointed that I've switched back to R12. Living in south Florida with
>> my
>> black 5000tq I could only get cold enough to just barely stop sweating 
>> with
>> 134a (vent temps in the high 60's). With R12 it would achieve the set
>> temperature and vent temps in the low 50's or better.
>>
>> YMMV, etc.
>>
>> -Cody Forbes
>>
>> Dave Yentema wrote:
>> > hey guys, got a couple of questions about converting the ac in my car
>> > (875kt)
>> >
>> > she has never been retrofitted to 134, and from lack of use 90% of
>> > the r12 is gone, its low to the point that the comp won't even run(I
>> > tested this by jumping the connectors on the low pressure switch) So
>> > after weighing out all the options, i've decided that the conversion
>> > is my best bet right now.
>> >
>> > I've seen my dad do the conversions before, and whenever he did it
>> > professionally he would just evacuate the r12, change the fittings,
>> > drop some ester oil in and charge it up with 134 (Even though this
>> > isn't the recommended procedure, it always worked) . He knows his
>> > stuff with AC, does everything the old fashioned way with just the
>> > manifold gauges and knows exactly what lines to touch, etc. Having
>> > him help me on this isn't really an option for this.
>> >
>> > This is what I'm picking up:
>> >
>> > -New receiver/drier (from AutohausAZ)
>> > -134a retrofit kit, not the one with the oil, but its got all the
>> > fittings and o-rings I'd need (also from autohaus)
>> > -Polymax2 oil http://www.autoacsource.com/store/coolzone_oil.html
>> > -Variable orifice
>> > tubehttp://www.acsource.com/index.asp?PageAction=VIEWCATS&Category=273
>> >
>> >
>> >
>> >
>> > I know that the system holds about 39oz of R12, and it'll take about
>> > 85% of that with 134, so about 33oz?
>> >
>> > and how much oil does it take? I read somewhere it takes 8oz but i'm
>> > not sure.
>> >
>> > also, any reason  why I can't do all of this while its getting colder
>> > outside? or should I wait till springtime to try and fill er up so to
>> > speak
>> >
>> > any suggestions would be awesome
>> >
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>>
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>
>
>
> -- 
> David G. Ullrich
> Cavu Consulting
> "Finally, Affordable Technology Help"
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