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Zetec Cooling


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Evening

Looking for a little advice.

Struggling with the cooling on my zetec as I can't get the water fully circulating round. I am running the water pump the wrong way but I don't believe that is a major issue especially when just idling which is all mine is good for at the moment.

So a couple of questions, 1st pic, am I being too optimistic with the angle of this pipe?

2nd pic, currently I've blanked this off with a screw as it was shooting water everywhere, I'm 99% sure this isn't the answer, what's it supposed to do?

 

Any help really appriciated

Thanks

Simon

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Thanks for the pic. I haven't got a header tank, or expansion tank which I've seen some people have when googling.

Everything else looks ok, is the header tank essential, I am using a radiator with pressurised cap if that's makes any difference

Cheers

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Guest 2b cruising

Most important thing for you to do first is getting the pump running the right way. There has been an article on this sight about this very ubject. There has also been one about somebody modifying them for sale.

Nothing wrong with your pipe angles as long as there are no kinks or flat spots in the pipes.

The drawing that CMA has put here for you is top notch.

HTH

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Guest mcramsay

if you are running the pump backckwards you may aswell not bother putting any coolant in the engine at all! The pump

Impeller is designed to rotate in a certain directon, running it any other way will achieve nothing! You need to sort this before doing anything else!

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This is another design, basic without heater. Shows direction of water flows. I don't know how efficient the pump is running backwards. I have seen posts where people have claimed it does pump when running backwards. Just seems daft to rely on that. Secondly as the water in your system will expand by about half a pint when hot, that water being lost, and contract again as it cools, sucking in air you will always have trouble with air in the system if you run without a tank. Simple spit and suck with a non pressurised tank connected to the rad overflow has always worked for me. Doesn't have to be elaborate.

 

Nigel

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Guest 2b cruising

Centrifugal pumps pick up in the centre and throw the coolant outwards where your pump outlet is and creating considerable pressure that your system requires.Running the other way will cause no pressure because of the impeller shape. Also it is trying to suck coolant through the closed thermostat.

Can't you find the topic of pump running wrong way. Several blogs have been raised on this subject.

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ah there you go its a centrifugal pump and not a circulation pump I was going to see if I could run a central heating circulation pump on 12v cos the 12v electric water pumps are a silly money :rofl: :rofl: :rofl: :rofl:

Edited by tractor
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Guest 2b cruising

Why not give it a go. They are still directional centrifugal pumps. They cirtainly have the head required, but you would need to know the flow rate required and the flow rate of pump. Can't tell you about the voltage but if they are 220/240 volt pumps that is he voltage you will need to the supply connection.

You can of course use a voltage lifter but then you are looking at costs again.

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