Quote:
Originally Posted by Purdy Swoft
The model B water pump has the upper hose connection as part of the pump . The impeller is larger in diameter . The shaft is shorter and the pump connects to the head with three bolts instead of four . I feel that the model B water pump is an improvement over the model A pump but uses the same packing nut and packing . The B pump is easier to remove and replace .
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The B engine is very similar to the A so far as cooling goes. It is interesting to see that ford INCREASED the size of the impeller while some Model A owners try to cure a cooling problem by REDUCING it.
I've never paid any attention to those who say the coolant should be slowed down.