Coolant port, what have you got connected here?

[sapper]

Gents there is a coolant port at the front left corner of the engine.
What have you got it connected to?
I did have it as an in pipe to my turbo but I've redone te plumbing and don't know what was originally coming from this port.


http://thumbsnap.com/0zSjA9FN

[sapper]

Thanks Gents