There's the big difference though. You have 14cc. I have 7cc. These are quite small compressors, and I just don't think it will be possible. I have r23 and that'll be a bit easier, but I also don't find 19-20 bars of pressure acceptable. If this goes to a customer, I want my HPCO set at 300 and normal load between 2 and 250 psi on the high side. These rotarys would cook otherwise.

Maybe on the next one I'll see what r170/r1150 can do, but I just don't see it being viable here.