The fittings I got with mine fit a 1/2"ID hose. That's what should come with it. The ID. of the barbs on it are roughly the same as a brass 1/2" barb. I can't remember which one, it's a 3/8" or 1/2" NPT thread. I modded my intake with a 3/4" barb and that helped flow some and added a bit more head. I havn't done the outlet yet but plan too soon after I solder up my new caprice core. Generally, the less restriction in the loop is always good but the less restriction you can achieve on the inlet of the pump the better.
|