strong waterflow

René W

René W

Senior Member
I have replaced the old leaky waterpump for a modern non leaky pump.
Now the water is pumped so strong into the radiator it is pouring out the overflow pipe,is there a simple solution to solve this problem?
 
Do you have a thermostat? fitting one will slow down the flow because of the restriction in the top hose. Alternatively, put a roofing nail in the overflow pipe.
 
It does not matter if the level of the coolant is low,it still pumps towards the overflow pipe.
I don't have a thermostat,i blocked the overflow but then the coolant is bubbling out of the filler neck/cap.
 
Rad is not plugged,i know because it has got a new core last october.
When the old waterpump was on there was no problem,the new pump has much more flow.
I am thinking of creating some kind of restrictor in the upper hose or solder a copper plate into the rad so the direction of the flow will be bend off.
 
Grind the fins down a little and drill a hole in each one...

Maybe your core was not done to factory specs
 
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I wonder if the baffle is missing in the radiator? Can someone post a picture of the radiator baffle? I think there is a good picture in ford service manaul!
 
If your core is not restricted, then you just have a velocity problem. You must be flowing over 40 gpm. Just put a restrictor plate of some sort in the upper hose.
Keep in mind that the only water the pump can pump is what it gets from the radiator. It can't pump too much, assuming you are not making bubbles of steam in the engine.
Can you give us a picture of your set up?
 
First look in the filler neck half throttle
Blue coolant in the filler neck 3/4 throttle
Aluminum cup is a kind of restrictor i made but it flows into the cup and out of the overflow pipe.
At the time of these pic's the engine was cold
 

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René, Before I installed a thermostat in my Town Sedan it had this restricter plate in the outlet. I took it out because I felt I didn't need both the thermostat and restricter.

24545132044_1a13d2b44d.jpg
 
I remember reading that the impeller fins are to large causing to much pressure ,I think you can grind them down and eliminate your problem
 
Y-Blockhead said:
René, Before I installed a thermostat in my Town Sedan it had this restricter plate in the outlet. I took it out because I felt I didn't need both the thermostat and restricter.

24545132044_1a13d2b44d.jpg
Click to expand...

That looks allright to do,or i can install a thermostat.......where does the thermostat need to be installed,between the outlet and the head?
 
jm29henry said:
I remember reading that the impeller fins are to large causing to much pressure ,I think you can grind them down and eliminate your problem
Click to expand...
That's the same idea i have,too much pressure.
But before grinding the fins i want to try another solution,you can grind them down but not grind them up
 
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