1972 Duster Build with my Daughter

Jim Kueneman said
Damn it.... Swapped out the leaking, whining rust pitted gear set 2.76 with a nice leak free quiet 2.94 before heading to a show (we were too late to enter after the gear swap). On the way I got use to dropping it into second at 55mph and punching it.... well the 2.94's reved higher than I anticipated and the original A/C compressor we rebuilt ate 3 reed valves from over reving.....

Thanks to Barry over on the FBBO site who helped me diagnose with his years of AC experience. Now I get to go to O'Rilley's tomorrow and spend $350 on rebuilt compressor, flushing fluid, etc to get the ladies A/C for the 300 mile trip first thing Wednesday morning.... what an idiot I am.... We blew it in the first 20 miles of our 160 mile round trip yesterday so I know they will NOT be happy with 300 miles sweating in the desert heat.....

Wish I had been here back when you posted this. I would've saved you from a likely horrid reman. Parts for these compressors, and indeed complete NOS compressors, can be had on Ebay. Just looked today and found one NOS valve plate for the RV2, SIX! NOS RV2 compressors, and virtually every NOS part needed to rebuild an RV2. Another option is to buy relatively inexpensive "parts donor" compressors for things like valve plates, rods, crankshafts, etc. The compressor you rebuilt looked really good, and IMO you would've been better off sticking with it and just replacing the valve plate(s).

Jim Kueneman said
Spent some time with the factory AC today. I think a couple A/C guys on the FBBO site and I have figured this out. For those using factory A/C converted it to 134a and it worked like crap I may have a step by step of how to modify the replacement expansion valves to work as good as if R12 was in the system by next weekend.

My experience with cheap Chinese TXV's has been the same as everything else that is cheap and Chinese. Again, you're better served getting a NOS valve. Another option, which I use, is to convert to a real Sporlan TXV of the type used on stationary refrigeration and AC systems. They're a bit larger and have flare inlets, outlets, and balance port connections, so either mods to the existing ends or adapter fittings must be used. However, they have massive advantages. They are more stable, have fine mesh inlet screens, are much longer lived, are made in the USA, and best of all the superheat can be adjusted while the system is charged and operating! If it's something you ever want to consider, shoot me a PM and I can show you my system with such a TXV installed. FWIW, I'm a refrigeration guy, so I kinda geek out on stuff like this :D