Date: Tue, 19 Aug 2008 13:45:50 -0700
Reply-To: Keith Hughes <keithahughes@QWEST.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Keith Hughes <keithahughes@QWEST.NET>
Subject: Re: Best AC Condenser Option
In-Reply-To: <20080819164512.C840CE0406@mpls-mf-04.inet.qwest.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> Date: Tue, 19 Aug 2008 16:00:31 +0000
> From: Todd Last <rubatoguy@COMCAST.NET>
> Subject: Re: Best AC Condenser Option
>
> I can't give you any brands, but using a newer generation condensor which utilizes the 'serentine tubing' will offer better performance than the stock unit. They have fewer braised joints so are also less prone to leak and better performance for a comparible sized unit.
>
> If you are an experimentor, you might want to try adding an additional condensor under the van to boost the cooling ability - but you would need to correctly calculate the amount of additional refrigerant you might need.
>
> regards,
> Todd
>
Actually, the "serpentine" type condenser is what you have currently.
The newer style condensers are "parallel flow". I recently installed a
14" x 21" parallel flow condenser after retrofitting to R-134A. The
stock condenser just didn't cut it at all with the R-134A ('86 Westy,
but with the '85 style 'split' condenser), and the new condenser dropped
outlet temps by 20-25°F. At 14" x 21", it's the same surface area as
the original '85 split condenser, but more efficient. These condensers
(see at
https://www.ackits.com/pc/12-0544C/Parallel/FSHE+PF+Condenser+%2814+X+21%29)
are also well setup for easy installation in the '85 setup, with the
side inlet/outlet ports (versus the bottom connections used by the '86
up versions). I have no affiliation with Arizona Mobile Air (the ackits
folks) but they were great to work with, and I had them fab up all new
barrier hoses at the same time. Works as well now with R-134A as it
used to with R-12 (damning with faint praise as they say, but it's
actually usable).
As for addition of a second condenser, just remember that it needs to be
*upstream* of the receiver/drier. Easy to do if your receiver/drier is
in the rear wheel well, but mine is in the drivers side front wheel
well, so adding another condenser would require moving the drier and
fabbing additional lines.
BTW, if you're into the system, for whatever reason, *always* replace
the receiver/drier. Not only does the adsorbant material get fouled
over time, reducing efficiency, it also collects junk flowing through
the system, and it also breaks down (particulates) after long usage as
well. A generic replacement is real cheap ($14 for mine from AMA) so
there's no reason to not replace it. Good luck,
Keith Hughes
'86 Westy Tiico (Marvin)
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