Re: thermo syphon

Posted by r4etired on April 28, 2005 at 19:22:45 from (152.163.101.13):

In Reply to: thermo syphon posted by Mark Hogberg on April 27, 2005 at 20:07:06:

A buildup of lime and calcium in the radiator and the head slows down the gpm of coolant thus proper cooling can not occur, Take a stem thermometer and compare temps at the top and very bottom of the radiator if you don't have at least a 10 to 12 degree drop across the radiator ,I think you will find dirty fins in the radiator or a limed up head. ,Pressure systems only raise the boiling point, A 15 pound can run up to 240 degrees before it will boil,I would check if a water pump from a super c will fit an A ,it will work on a straight C.Years ago anti freeze was very expensive,You could use alcohol in the radiator in the winter but it boils at 180 so when spring plowing started you had to go back to water,Most farmers just drained the tractor each night and refilled the next morning,That also provided a new source of lime and calcium every morning, Ever notice the size of the radiator fill on pre1939 tractors

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