Cylinder head coolant ring

[AndyP]

I've always known it as 'deck cooling' and JP can do it, not sure of cost though.

[Jamo]

Steve at Hockly Heath has the program to have this done via spark aroading

Steve with Red S2 and Autosport curry fame?

[terrybullwon]

And it's a water jacket

[terrybullwon]

Steve at Hockly Heath has the program to have this done via spark aroading

[Jamo]

Can anybody confirm what this process is officially called? and how much does it roughly cost?