Thanks for the replies. What's the difference between water cooling the turbo or not? Is the extra cooling useful? The engine is mostly standard. I guess it will be OK. Should I be thinking about water cooling the tubo if I uprate the engine?

On the oil breather there are only two connected. Does anybody recognise the breather I have in the engine bay? I'm interested to find out which connector is which because I guess the vent to atmosphere should be collected for track use so I will need to run a pipe to a catch can.

Charlie