9mm bullet polished brass and copper overflow tanks hot rod 1/4" drawn copper tubes like

1/4" drawn copper tubes like the OE

We designed this pie-shaped overflow tank to nest against the sidewall and fit inside the  1930-32 Ford Radiator shell

The highly elliptical tube shape provide equal volumetric throughput but increase surface area by 293% thus requiring fewer tubes and still providing greater heat exchange

Images reflect past builds and illustrate various elements of design

This tube design provides equal volumetric throughput but increases tube surface area by 293% thus requiring fewer tubes and still achieving better heat exchange

9mm bullet polished brass and copper overflow tanks hot rod 1/4" drawn copper tubes likeThis coolant recovery tank may be mounted next to the radiator or on the firewall. It is made of polished brass, 3" diameter, copper top and yes, it is made in the USA Should the system pressure exceed the caps rating, the spring will compress and fluid will flow through the upper tube to fill the chamber. In the event the recovery tank reaches capacity, the fluid will find the second tube and exit to the street. A vacuum will draw the coolant back