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couple easy Qs. Evaporator thermostat and PF condenser

98audiA4 on Fri July 23, 2010 10:02 PM User is offline

Year: 1991
Make: dodge
Model: spirit
Engine Size: 2.2
Refrigerant Type: 134a
Ambient Temp: 100

Recently I found a parallel-type condenser that fit the bill for my older spirit. Now I've found a second, newer parallel condenser.
The one I found Has two tubes that run along one side of the condenser (top to bottom) and feed small tubes that cross the condenser make a U-turn and come back and flow into a common tube and out the exit. The incoming line feeds feeds in at the top and the outgoing comes from the bottom.

Now, I've also found another type of parallel condenser that was only in the 95s. The previous one seemed to in the 94s (and maybe 93). This one is the type with the flat bars that run from one side to the other. As far as I can tell this is the same design that I see on very modern cars. Round common tube from top to bottom feeding flat bars that go across.

If there much of a performance to be gained going from a PF tube and fin to a PF (whatever the flat bars are)?

second question. my evaporator thermostat seems to shut off right at a vent temp of 50 degrees. the car has no problem cooling to 50 degrees at 100F outside on the freeway or 70 so the system seems to be great other than that switch. would it be advisable to find an adjustable clutch cycling switch and strap it to the suction line leaving the H block? Do evap thermostats go bad/get out of calibration?

thanks guys

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