DIY Header Tank

I made up this header tank using a 2L plastic lemonade bottle, and an old BX rad cap.

The idea is that the weight of water in the homemade header tank, plus the fact that it does not allow any air into the cooling system will make for faster bleeding of the cooling system. A professional version is used by many Citroen dealers and specialists.

I simply removed the spring etc from the old rad cap and bored a hole to the size of the threaded part of the lemonade bottle. The neck of the bottle was then screwed throgh the rad cap, then the lid of the bottle screwed on to make it all secure.

The cost was basically nothing. A new rad cap is the first port of call for anyone buying a BX, costs about £4.00! The old one can be utilised as I suggest here.

Jon