in December of 2009 I managed to find a vintage air setup for my 1940 ford.
unfortunately the under dash area of a 40 wagon is somewhat limiting.. especially when your buying someone elses used parts!
to compensate I am thinking about installing a second evaporator for rear seat passengers..
I have two concerns..
1. what does the A/C line routing look like (ie do I put the second evaporator in series with the first, or parallel?)
2. how do I determine what size compressor I need?
The second evap should be parallel with the first.
Your compressor (if healthy) will be fine , it will keep up.
Most systems use an orifice tube for the front and an expansion valve in the rear.It is a little easier to fill/diagnose a system with that combo as the orifice is a constant and the expansion valve is a regulatory type device.
If the front has an expansion you could run the orifice in the rear, but the rear may cool better/ faster untill the system gets stabilized after a few minutes of run time.
You can run expansion valves on both ends if you like ,but it will be a little trickier to arrive at the correct pressures / charge amount as it would take a little more time for the temp/ pressures of the system to stabilize.
Super Nifty Woody BTW. :thumbup:
thanks.. I started the install and appreciate the info!
I bought a 34 wagon and we call it a woody
Surf city here we come...
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