Re: 10-20 - How did they stay cool.

Posted by Bob Kerr on April 25, 2003 at 16:34:10 from (205.188.209.140):

In Reply to: 10-20 - How did they stay cool. posted by RJ on April 25, 2003 at 10:36:05:

Thermo-sypon sytems are based on the principal that warm water rises.Like F-Dean said, the 10-20 uses large holes in the top of the block and in the head to let the water raise freely. W-30s that had water pumps have much smaller holes because the pump forces the water to flow. Here is how it works. As the engine warms up, the water also warms and begins to try to go up as the warmer water goes up, cooler water from the bottom of the radiator enters the engine block to replace it. at the water in the radiator cools. It wants to go down of course that happens as more hot water is raising. The hotter the water in the head gets, the faster this all happens. Te main thing is with thermo-syphon is, The water level must cover the upper pipe from the engine and also the radiator top must be well above the cylinder head. There were many tractors that use this type cooling system, including My Kubota B6100 HST! The old model T ford also used it, but it was found that a water pump would really make things better for a car, so one was added for the Model A fords and I have seen some Ts with an added aftermarket pump. Cylinder head cracking can be common problem and usually happens if the water level gets too low and the circulation stops causing a steam pocket (hot spots)to form in the head or someone adding water while it was still too hot. Water pumps helped to prevent head cracking because the top pipe no longer had to be covered. Scale build up is another problem so be sure to ONLY use soft water or rain water with a rust preventer and or an antifreeze mix.Scale actaully builds up more in the head, but chunks can come loose and clog radiator tubes stopping the flow. Well or plain city water is notorious for causing scale! Hope this helps and enjoy your 10-20 as much as I do mine!

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• Re: Re: 10-20 - How did they stay cool. Ludwig 11:14:38 04/26/03 (0)

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