Quote:
Originally Posted by eagle
Must be quite a pump if it can pump out more than it can pull in from the bottom of the radiator!  |
The dynamics of this is that the water pump draws the water out of the block too fast and it creates a low pressure with in the block. Any water close to the boiling point, flashes into steam at the lower pressure and the steam then displaces the water in the block. Hence you have more water coming out of the water pump than is pulled in from the bottom inlet. It is the old school teaching that water boils at a lower temperature on the mountain top than the higher temperature that it boils at sea level. A pressurized radiator will very well raise the boiling point of the water in the system thereby preventing boiling over at the old lower water temperature.