The expansion bottle
We wanted a narrow bottle to fit beside the Fan cowling, after a lot of looking we came up with this from "Halfords", its a Bike water bottle made from Aluminium we just drilled the top to suit the pipe from the Radiator and slotted it in place. It has a small breather hole so there will be no pressurisation problems.
Here is where we have fitted it, slotted nicely in beside the radiator cowling and secured in place with a "Jubilee clip".
We may have to change the routing of the pipe depending on where we end up fitting our bonnet catch, But "Hey" thats another Job!