Finally after failing to reseal my AC compressor the first time, I have installed a replacement used Denso compressor that is now functioning properly. The AC is conversion from R-12 to R-134a. Toyota TSB confirmed that no dramatic changes are needed for the Denso 10PA compressor for conversion, just changing dryer o-rings and dryer itself. However, the TSB says that R-134a operating pressures should be higher than R-12. Does anyone know how much? I am too cowardly to take the pressure higher than 230PSI on the high side. I have no idea how much higher it should be. My AC vents are putting out 60 degrees on 90 degree days. So not very good, but at least functioning ok. Any idea what the pressure ought to be?