AC parts for larger cabin air system
It was half off day at the local pick and pull junk yard and I decided to gather up some parts for my project. I plan on doing lots of time driving in hot/humid places and I really love good AC.
First things first on these old vans that are R-12 units that most likely have been converted to 134a - the condenser is undersized after the switch and cooling really suffers because of it. Since I will be opening my system up anyway when I do my body swap I might as well update the condenser to a modern high efficiency Parallel flow type unit so I set out hunting the junkyards until I found the perfect unit.
The
2001 - 2004 Caravan or Town & Country. Its the right size, Its 134a, it has nice mounting bosses on the sides, uses Block fittings which I prefer but to each their own on that.
Here are some pics of it loosely installed in a 1988 E-250.
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With Core support shelf installed. Hood latch fits fine.
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About as big as could possibly fit and a nice thick 1" unit too.
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These Units come with a nice transmission cooler, think I will use 2 of them they fit nice.
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Block Fittings will have to feed through a hole cut in the core support.
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Mopar part number for condenser.
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Mopar part number for the transmission cooler.
This condenser is the largest most efficient unit I can find including aftermarket universal units. If is a far better unit then the stock one and even better then the serpentine path one used in the newer E-series. If you wanted even more condensor power you can always add another one in series like is done on some cars like this 2000 Caravan unit.
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Notice the added small condenser in series in the upper left corner. Yes it is factory they are all like that if they came with factory rear air. These years of condensers for the Caravan only had about a 3/4" thick condenser.
I also found myself a nice rear air unit out of a 2012 Ford Bus that is a cabinet mount unit. Its 134a also. 43k Btu Heat / 36k Btu Cool
Now I am looking for the dealer installed engine ac bracket that was used on the 7.3 IDI when rear air was added after the factory. It mounts a Sanden sd709 compressor or I might have to modify my existing bracket if I cant find one as mine came with factory rear air.
Additional parts needed - New front ac evaporator core, new fabbed aluminum line sets, new accumulator/dryer - I am going to use a large one from a Semi unit to allow a little more time at the stop lights in high ambient temps. I am sticking with orifice style metering and not using TXV valves, I have never cared for them as they fail far too often. I prefer an orifice and large accumulator then use fan speed to set cooling temp in the cabin.