Quote:
Originally Posted by ryanheacox
Yep, and the lowest pressure of all is going to be in the head... right where you need it most. Does anybody know why Henry thought a pull through cooling system was better?
|
In only two words: "It's cheaper."
The option is a "Push Through" system where the water pump is between the bottom of the radiator and the block. It is not so easy to put the pump down there for the same $.
All that said, the Model A water pump doesn't create any pressure to speak of. It can, however, move a large volume. I doubt it is capable of causing a low enough pressure in the block/head to lower the boiling temperature much at all. If the SLIGHLY lower pressure were enough to do that, the system is @#$%ed anyway.
Remember, the Model A cooling system can best be described as "pump assisted thermosyphon". With a good radiator, you can drive without the pump - I've seen it done by a club member on a 1,500 miles drive.