Thermosiphon radiator upgrade

M

mattwithcats

Active member
Jun 17, 2017
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I have seen a lot of posts about thermosiphon radiators overheating,
here may be a solution.

I don't have a tractor to test on, i saw this installed on a parade tow vehicle that was run at low speeds, to keep it from overheating.

The pump installs in the lower radiator hose. 20 gallons per minute.
Water flows from the radiator to the engine on the lower hose.
https://www.jegs.com/i/Meziere/680/WP136S/10002/-1

The fittings, you need to adapt the AN (Army Navy) 12 fitting to 1 and 1/2.
Actually the b7100 uses 34MM I think, which is 1 and 3/8, but only 1 and 1/4 and 1 and 1/2 hose ends are available. Four color choices.
https://www.jegs.com/p/Meziere/Meziere-Water-Pump-Fittings/753981/10002/-1

Pump bracket
https://www.jegs.com/i/JEGS/555/50956/10002/-1

And last, a thermostat, to keep the temperature stable.
Installs in the upper radiator hose, so water flows from engine to radiator...
4 temperatures to choose from, 160, 170, 185, and 195
https://www.jegs.com/p/Meziere/Meziere-Inline-Thermostat-Housings/1503584/10002/-1
 
North Idaho Wolfman

North Idaho Wolfman

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Nice thought, but on most of the models there is not enough room to install much of anything in the system. ;)

You can change the gear case (with waterpump) and the head mounted thermostat, but those parts aren't cheap or even easy to find. :(
 
Mike9

Mike9

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I have a thermosiphon and have never had a problem even after working it all day at WOT. I do however inspect the radiator and clean it when it cools down after a day like that, or any time there is chaff in the air.
 
85Hokie

85Hokie

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100 td said:
This style of pump has been used in various situations for additional cooling or heat transfer for heater cores etc. It may be a bit smaller or offer different mounting if you are going that way

https://www.ebay.com/itm/182859678085
Click to expand...
I have seen these types......really neat compact "pumps".

Somehow it would need to have a external thermostat/rheostat to tell it when to turn on and off, and or vary the speed too. It would be almost as bad to pump cool water 100% of the time over a cold engine.:)
 
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