1.5” or 2” stack for LX?

[gborris]

I’m working on my beloved Ninja Classic. Do the LX motors require a 2” stack? Or is 1.5” stack with 2” barb sufficient?

 

[Jim Davisson]

2" imo but you might draw "slightly" less amps with 1½". Go 2" and let it eat.

 

[gborris]

I ordered this bulkhead fitting on Amazon 2” bulkhead slip x slip. Fits 2” pvc. I’ll use Toyota FIPG with the gaskets