As you know it will be an estimate. A dual unit system, 3 ounces should do it.

Use a real set of AC gauges and don't vent refrigerant. Those are my thoughts.

Simple answer: Air moves slower across the coil allowing for more time to remove the heat load.

Are you not swapping out the control valve in these compressors correct? Do they come with a new one installed?

No, and it's just a suggestion. I'm responding to people I know in the industry in the location you asked about.

AZ Auto Refrigeration has been around forever.

Auto AC Forum Posting Rules. Please read the following before posting. US SNAP Policy on refrigerants. 1. This Forum intends to provide technical repair assistance to individuals with a basic working knowledge of Mobile Vehicle Air Conditioning (MVAC) systems. Repairs should not be performed by anyo...

Yep.
Just messing around. No way I would spend the time to do that with 18K of old posts.

I'm with John, if it is working reuse it—probably a better valve than what is made today anyway.