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Hi Tiagus,
This is often done on race car engines
John

Hi Tiagus,
This is often done on race car engines as a way of getting a little more power to the wheels. as long as the pump moves enough water and your charging system can cope with the constant demand to drive the pump no problem
Regards
John

So this is how. will weld the support piece bearing the other bearing ring. And and closing the mouth of the water pump.

How will you fix your 'new' pulley?
And i think you should fix it very well.
Remember the crank shaft is driving the cam shafts.
Therefore you need some power. Your pulley is on that side of the belt which is transporting all this power.
The original tension pulley is on the side of the belt which is transporting nearly nothing. And there is a massiv bolt in the middle to fix it.
So be carefull
Beside this there are the good vibrations of a single engine.

What about fixing something in the mounting hole of the original waterpump?
You have a solid hole to take the power and three bolt just to keep the part at it's place.
In the end you will need something to attach the electric pump to the cylinder and the cooling circle.
There is a thermostat which should also be integrated.
A lot of things to think about

ciao joachim

Hi Tiagus,
AS Joachim has said use something in the water pump hole,ie the water pump without its impeller, using just the bearing housing, that way you keep the original belt arrangement without any changes
Regards
John

But my pump is broken