| Re: [GMCnet] Recirculation Air [message #362578] |
Sun, 28 February 2021 18:08 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Tom,
Here's the link to my custom HVAC album:
bit.ly/3uEBdoP
or
http://www.gmcmhphotos.com/photos/g5280-dash-air-conditioning-redesign.html
One thing I did not do, but probably should have, is replace all the vacuum
actuators and controls with electronic ones; it would have been simple
during construction, not so much now.
The GM A6 (not, IIRC, A10) compressor is certainly a great one with very
high capacity. The problem today, IMHO, is the non-availability of good
ones. If they're made new at all, it's not by/under the guidance of GM;
mostly we can only get "rebuilt" ones, which have not, from all I hear,
stood up well. I personally prefer the Sanden and similar clones. You can
see from the album date that I replaced the HVAX in '09. It was at least
2-3 years before that when I installed a Sanden-clone. I THINK I may now
need to add just a little Duracool to it -- it hasn't been touched during
those 12-15 years. :-)
Which brings up another subject: I've still got a 20+ year old partial
tank of R-12 refrigerant -- that's how long it's been since Duracool (and
similar propane/butane based compounds) came to my attention. It/they cool
better, leak less, tolerate any lubricant, and are not significantly
dangerous.
As far as minor mods to the HVAC, if your system does not use recirculated
air for cooling, look at bit.ly/2OdqkJC -- why cool outside air? And be
sure the door seals in the outside HVAC box are in good shape. The
conditions of the various damper doors are also important -- but very
difficult to do anything about.
Ken H.
On Sun, Feb 28, 2021 at 6:37 PM Tom Geiger wrote:
> Ken, saw your posting on Greg’s post on his dash air and you mentioned
> you redid yours years ago. I was hoping to do all the improvements to the
> air conditioning system myself this season before we get cranking up this
> summer. Was wondering if you had some guidance on the best things to do.
> My mechanic I had restore my system was really high on the A10 compressor
> and said replacing it with a new compressor would not be smart. We did get
> a new refrigerator pipe connection from Jim K to seal up the system to hold
> Freon.
> My hope is continue with this system and improve damper operation and door
> seals. Air circulation seems to be the biggest complaint so I thought this
> guys mod was pretty good. May consider doing this. What you think?
> Anything else you recommend doing?
>
> Thanks,
> Tom
>
> http://www.bdub.net/ac-recirc/index.html
>
>
> Sent from my iPhone
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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