Ive got a garrett gt28r & im trying to figure out which fittings are coolant in/out (I know which ones are for the coolant, but cant figure out which is the inlet and which is outlet, theyre the same diameter, although, one is longer than another) or if theres even a difference, does it matter which way it flows through the turbo?

Ill try n get some pics up soon...

 

the coolant ports are 14mm thread and there is no in or out for flow so it dosent matter wich way you hook them up ,