Reply to "Why do we need the Radiator tank ???"

The Pantera system as designed has two tanks, a swirl tank and an expansion tank. The expansion tank functions like all the little plastic tanks on cars since the early 70s. The swirl tank creates a vortex that seperates air out of the coolant before it goes to the radiator.

You can eliminate at least one by using a modern style expansion system. You move the expansion tank to the waterpump inlet and a small bleeder tube to the inlet side top of the radiator. New cars have the rad below the engine so they cant get the air out of the radiator easily nor can they be checked with a conventional cap. So new cars have the cap on an expansion tank that is under pressure. The idea is that a small flow of coolant passes from the top of the radiator to the expansion tank and back to the water pump inlet. And I mean small, like a 1/8 inch hole. Any air trapped in the radiator passes to the expansion tank and the tank passes coolant to the waterpump inlet. Keep the tank 1/2 full and you are fine. Same principle can be applied to a Pantera.