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Old 01-20-2017, 12:07 AM   #1
René W
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Default strong waterflow

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?
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Old 01-20-2017, 12:12 AM   #2
Drive Shaft Dave
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Default Re: strong waterflow

Make sure the coolant is below the radiator baffle.
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Old 01-20-2017, 04:09 AM   #3
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Default Re: strong waterflow

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.
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Old 01-20-2017, 05:54 AM   #4
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Default Re: strong waterflow

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.
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Old 01-20-2017, 06:12 AM   #5
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Default Re: strong waterflow

Sounds like your rad is plugged up causing enough backpressure to push coolant out the overflow.
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Old 01-20-2017, 06:46 AM   #6
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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.
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Old 01-20-2017, 07:17 AM   #7
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Default Re: strong waterflow

Grind the fins down a little and drill a hole in each one...

Maybe your core was not done to factory specs

Last edited by Mitch//pa; 01-20-2017 at 09:22 AM.
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Old 01-20-2017, 08:20 AM   #8
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Default Re: strong waterflow

The core was done by BLAAK RADIATOR SERVICE a weel known firm in the Netherlands who is specialized in vintage radiators,they even make a complete factory replica if you want to.http://www.blaak-radiateuren.nl/nl_NL/
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Old 01-20-2017, 08:31 AM   #9
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Default Re: strong waterflow

X 2 on post 7
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Old 01-20-2017, 08:55 AM   #10
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Default Re: strong waterflow

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!
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Old 01-20-2017, 09:15 AM   #11
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Default Re: strong waterflow

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?
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Old 01-20-2017, 10:05 AM   #12
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Default Re: strong waterflow

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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Old 01-20-2017, 10:08 AM   #13
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Default Re: strong waterflow

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.

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Old 01-20-2017, 10:08 AM   #14
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Default Re: strong waterflow

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
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Old 01-20-2017, 10:16 AM   #15
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Default Re: strong waterflow

Nice job on the outlet restricter plate.
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Old 01-20-2017, 10:21 AM   #16
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Default Re: strong waterflow

Quote:
Originally Posted by Y-Blockhead View Post
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.

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?
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Old 01-20-2017, 10:24 AM   #17
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Smile Re: strong waterflow

Quote:
Originally Posted by jm29henry View Post
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
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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Old 01-20-2017, 10:43 AM   #18
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Default Re: strong waterflow

Quote:
Originally Posted by René W View Post
you can grind them down but not grind them up
Good one!
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Old 01-20-2017, 11:10 AM   #19
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Default Re: strong waterflow

Quote:
Originally Posted by René W View Post
where does the thermostat need to be installed,between the outlet and the head?
Most install it in the outlet hose. All of the vendors sell them. http://www.snydersantiqueauto.com/thermostat-507 Your choice, 160°F or 180°F.
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Old 01-20-2017, 11:18 AM   #20
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Default Re: strong waterflow

Quote:
Originally Posted by Y-Blockhead View Post
Most install it in the outlet hose. All of the vendors sell them. http://www.snydersantiqueauto.com/thermostat-507 Your choice, 160°F or 180°F.
Thanks,probably the Dutch vendors have these too,i will order one.
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