32 degrees, nice!
I'm glad you paved the way for the rest of us nieve people in need of a nice AC set up. I'll be doing my original AC over in my 72 Scamp and will be looking at all your posts. Thanks much. Steve
Just rebuild your original RV-2 and buy a NOS expansion valve. If you look into the end of it there is a spring with a hex sleeve for adjustment. I am going to tighten that sleeve to put more pressure on the spring 1 turn to compensate for the R12 in the NOS valve and the R134A saturation temperature. I used a NOS front seal as well and it held a vacuum for 24 hours without dropping at ALL. Never seen that before. So bottom line all the crap about needing to "change over" to 134A is crap. I spent a lot of time learning AC and thermodynamics in the last 2 weeks and now understand it. New green o-rings on the lines and that one small adjustment of the original expansion valve is ALL you need to do. Then only fill it with about 80% of the R12 fill number.
