Date: Tue, 9 Jul 2002 23:45:09 -0400
Reply-To: Myron Lind <mdlind@RICA.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Myron Lind <mdlind@RICA.NET>
Subject: Re: Air Conditioning... Add another evaporator?
In-Reply-To: <441AE7AA2087D411B8FF00508BA0F8A8A40F36@e90dpsg2.dx.deere.com>
Hi Jeff
I am attempting to add dual air to my 82 TDI project. I have had the front
fan/air box apart, don't recall exactly how much space there was in there. I
think one of the main problems with the idea you have is most of the air
coming into the box is from outside. I don't know how easy it would be to
get the box to recirculate air. I also don't know where you would find an
evaporator that is long and skinny like the heater core. Otherwise, not all
your air would be forced through the evaporator. I think you would need to
switch to a variable displacement type compressor. If yours gets switched on
and off by the expansion valve, it would get confused by two signals--I
think. Also, (second main problem with this idea)--because the evaporator
changes the liquid "freon" to a gas, and the pressure changes also during
this process, you can't hook up in series.
I took an evaporator from a 1986 or 1987, I don't recall. Anyway, the
important thing is that the hose fittings stick straight out from the
evaporator, so it won't take up lots of space, and won't bang me or my wife
in the head. I am mounting it right in front of the hole for the pop top,
but right behind the front seats. I am trying to use a bank of 4 muffin fans
instead of the small squirrel cage fans to save space. They might not blow
enough air--I haven't played around with them much yet. They came from a
surplus place in Nebraska, and they claim to move 100 cfm per fan, so I
should total 400 cfm. And, since these fans came from some sort of a
computer cooling assembly, they may not hold up to automotive use. Anyway,
then I was also going to add a small Westy type evaporator in the rear
overhead cabinet, only I was going to make it much small than the Westy
evaporator. Not sure where to source the evaporator yet. Each one will need
its own pressure regulator valve.
That how I understand it from talking to the guy who is going to help me
hook it all up. He seems to think it won't be a problem.
Myron Lind
81 Westy
82 Westy getting mechanical TDI
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Birkenfeld Jeff
Wise list,
Anyone out there who has removed/revamped their front heater blower motor
housing please advise me on this one:
Any reason why I can't locate a small Air Conditioning evaporator to the
inside of the heater blower motor housing hooking it up in parallel or in
series? Is there enough room in that blower housing for such a thing?
Trying to get more cool up front.
Just wondering since I'm going into the blower box this fall.
JB
'89 Wolfsburg
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