hey guys i just did an ls vtec b18b bottom end and b16 head so the problem im having is that i was left with a extra water line the one that comes out of the water outlet cover and idk what to do with it.. idk weather i should plug it up or run a T fitting for it please let me know....

 

Plug it.

Use a short piece of hose and a fine thread bolt and clamps. Or figure out a way to hook up a water temp gauge to it.