Re: 1941 Stretch Packard
Posted by JWL on 2021/9/14 10:33:12
Mal, the Zephyr and Continental Lincoln V-12s had their exhaust exit around the cylinders to manifolds on the outside of the cylinder banks. This was similar to the Ford and Mercury flathead V-8s. All these engines had separate cooling for each bank; hence, the need for two water pumps. There was no coolant connection between the two sides of the engines until the coolant entered the radiator.
This was probably a better design than the Cadillac and LaSalle flathead V-8s where they used one water pump on the front right hand side of the engines. This resulted in the rear left hand side suffering from poor coolant circulation and eventually getting plugged up and causing over heating.
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