I purchased remote water pump adapters with -12 O-ring boss (ORB) ports, but the AN fittings projected well into the supercharger belt. I had a ORB to AN adapter to mount a 90-degree AN fitting and stacking the two took a lot space. A tight-radius fitting might have provided enough clearance, but it would add a lot of restriction. After a little research, I found the perfect fitting; ORB-to-AN, low-profile, swivel, swept radius 90-degree. That said, the new fittings still didn’t fit so I milled 1/4” off of the back of the adapters.
Back of adapter being milled
Stock adapter (left), machined adapter (right) and a -12 ORB 90-degree swivel clamshell fitting (top)
Left remote water pump adapter with two -12 ORB ports. The large chamfers accommodate the O-rings.
Machined adapters and clamshell fittings installed. The top is the outlet and the bottom is the inlet. This allows air bubbles to flow upwards and out.