Overflow header tank

Next piece of the cooling jigsaw was the fitment of an overflow tank which holds water from the radiator when warm and return the water when cool.

The tank is held in place by 4 rivnuts fixed to the engine mount plate, however due to the available space on the mounting plate, it is a case of achieving a best fit and I ended up doing some minor adjustments to the plate on the base of the tank to ensure it secured to the tank using three of the four available holes.

The tank is held in place with rivnuts and hex bolts.

next up fitting the overflow pipe which goes between the water rail and engine block in order to route the pipe from the thermostat to the tank. This is secured into position using the existing fixing from the water rail.

Finally its is a simple task of routing the overflow pipes from the thermostat to the tank and an outlet pipe from the tank away from the engine to exit any overflowed coolant onto the road, all of which secured in position with the obligatory jubilee clip