12v water pump for tractor application any ideas?

I just switched my g over to an aluminum radiator. I
need to put a 12volt eletric water pump and looking
for a good affordable solution. Has anyone put one
on their tractors that could steer me in the right
direction?
Thanks in advance,
Jim

Jim, I used a Hypro Aqua Tiger pump on my 70. In addition, I placed a ball valve in the lower water pipe to act as a restrictor. Too much water flow lets the tractor run hotter just as much as too little. Mike

Yes a restrictor will be necessary when a pump is used. Otherwise the water won't stay in the radiator long enough to cool down.

I am sure this will start an argument; however, I would advise that you size the replacement electric pump for a flow similar to the OEM pump. If you have bored the engine or otherwise increased the engines power output you should consider a higher flow rate.

Water carrys heat from the engine to the radiator where it is rejected to ambient air. It takes 8.33 btu of heat to increase the temperature of 1 gallon of water by 1 degree F. A higher flow rate will maintain your engine at a more even temperature. For example: Lets assume the OEM water pump has a flow rate of 1 gallon per minute and the engine rejects 833 btu per minute into the coolant water. The water will need to exit the engine at 100 degrees F hotter than it entered to carry away 833 btu per minute. Now if you reduce the flow rate to say 0.5 gallon per minute the water temperature has to increase to 200 degrees F to carry away the same btu each minute. A 200 degree temperature rise would likely result in boiling however it is also much too large a temperature variation throughout the engine block etc.

Cooling systems are continous flow, there is always water in the radiator - it does not have to sit there to cool down.