Cool, glad it was just that simple...usually things are. The thing about it is having the tube in backwards will still actually work, but be much less efficient and definitely not blow as cold.
I actually rebuilt my entire AC system couple of years ago, replaced pretty much everything except the Evaporator which I simply reverse flushed. They rarely fail, or leak from that era in my experience so I didn't feel the need to replace it. The parallel flow condenser is a must imho with new compressor and r134a conversion. Also gotta get good airflow across the radiator and condenser or system will not perform well either.
Mine get's almost down to freezing (see vid) at the outlet vents temperature, and my HI side pressures barely ever go over 200psi. Having the Holley EFI, I actually input the AC Hi Press sensor in, and use it along with Coolant Temp to PWM control the brushless SPAL fans. Gonna be doing another similar full rebuild on my buddy's 86 Monte SS soon, just waiting on all the parts to come in.
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In addition to the behind the radiator, shrouded dual brushless fans controlled with PWM by Holley EFI...I also have a PUSHER fan mounted on the front of the condenser that operates separately based on TRINARY switch. When I first turn in the AC, the PUSHER fan will come on immediately at half speed, then if the hi side pressure goes up over 254psi (which it usually does on initial turn on) it then bypasses the resistor and goes to full speed.
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90% of the time, once the PWM fans come online, and the Hi pressure drops under about 200psi, that pusher fan pretty much just stays at half speed thereafter. The video about was from one of the most recent super hot low 90 degree days we've had in the northeast.
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