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Si P

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North Yorkshire

26th Nov, 2008 at 03:12:05pm

Hi there

I've got myself one of those "Craig David" water pumps to fit. And reading the blurb. it say's it is to be used only on a closed circuit water system.

So is this possible to do with a side mounted radiator.? Or do you think it will be ok just to run it as is. E.g With a standard open circuit system.

I'm going to control the pump flow with a voltage regulator to get the required constant flow.

So what do you think?

Si

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matty

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Aylesbury

26th Nov, 2008 at 04:15:34pm

I would use a shuttle type thermostat instead of the usual type (not sure what the correct name is?) as im sure these pumps don't like heavy restrictions? *oh well*

EDIT: would make setting the flow rate easier as it would stay more consistant. *wink*

Edited by matty on 26th Nov, 2008.

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Ben H

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Melton Mowbray, Pie Country

26th Nov, 2008 at 04:36:04pm

Just add an expansion tank and make it closed circuit.

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Si P

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North Yorkshire

26th Nov, 2008 at 05:15:48pm


Yeah matty, it does say to omit the thermostat in the book. And to use an inline capillary thermostat to run the pump.

Ben H: - Is it as easy as just connecting the overflow from the rad to a tank? Which should act as a return also.?


On 26th Nov, 2008 matty said:
I would use a shuttle type thermostat instead of the usual type (not sure what the correct name is?) as im sure these pumps don't like heavy restrictions? *oh well*

EDIT: would make setting the flow rate easier as it would stay more consistant. *wink*

I drill holes in everything..!

Ben H

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Melton Mowbray, Pie Country

27th Nov, 2008 at 08:08:16am

On 26th Nov, 2008 Si P said:
Yeah matty, it does say to omit the thermostat in the book. And to use an inline capillary thermostat to run the pump.

Ben H: - Is it as easy as just connecting the overflow from the rad to a tank? Which should act as a return also.?


Pretty much. The only other thing you need to do is take the pressure spring thing out of the radiator cap so that water can flow to the overflow. The expansion tank should now have the pressure relief in its cap.

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Bat

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Bermingum

27th Nov, 2008 at 09:04:35am

Hi
The standard system is closed unless you leave the rad cap off *wink*
Cheers
Gavin :)

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Si P

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North Yorkshire

27th Nov, 2008 at 07:39:49pm


Yep I know what you mean; I just meant that the standard set-up just wets itself onto the floor. (open ).

Reading into this a bit more, I think I'm going to use the proper EWP controller with the pump. Yet more expense but I think it’s worth it. Also seems to benefit the life of the pump to.

Si

On 27th Nov, 2008 Bat said:
Hi
The standard system is closed unless you leave the rad cap off *wink*
Cheers
Gavin :)

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Bat

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Bermingum

27th Nov, 2008 at 11:43:56pm

Hi,
Just use an old washer bottle to stuff the overflow pipe in. As long as the pipe is under water it will refill the rad as it cools down :)
Cheers,
Gavin :)

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Ben H

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Melton Mowbray, Pie Country

28th Nov, 2008 at 08:02:14am

On 27th Nov, 2008 Bat said:
Hi,
Just use an old washer bottle to stuff the overflow pipe in. As long as the pipe is under water it will refill the rad as it cools down :)
Cheers,
Gavin :)


I really don't think that is gong to work. It will only overfolw if the pressure relief valve opens. By the time the rad is cool enough to take back water the valve will be shut. It needs to be a propper pressurised container. We have don it on the TT and it is brilliant, no more topping up the water.

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Sprocket

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Preston On The Brook

28th Nov, 2008 at 12:23:16pm




On 28th Nov, 2008 Ben H said:
On 27th Nov, 2008 Bat said:
Hi,
Just use an old washer bottle to stuff the overflow pipe in. As long as the pipe is under water it will refill the rad as it cools down :)
Cheers,
Gavin :)


I really don't think that is gong to work. It will only overfolw if the pressure relief valve opens. By the time the rad is cool enough to take back water the valve will be shut. It needs to be a propper pressurised container. We have don it on the TT and it is brilliant, no more topping up the water.



I beg to differ. Post 92 minis all have an expansion tank tucked up under the nearside wing. The rad cap is different, it allows the vacuum generated in the cooling system when it cools, to draw back in anything it has blown out.

On 26th Oct, 2004 TurboDave16v said:
 Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........

Bat

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Bermingum

28th Nov, 2008 at 03:14:39pm

Hi,
Worked for me *wink*
Cheers,
Gavin :)

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Ben H

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Melton Mowbray, Pie Country

28th Nov, 2008 at 05:41:34pm




On 28th Nov, 2008 Sprocket said:


On 28th Nov, 2008 Ben H said:
On 27th Nov, 2008 Bat said:
Hi,
Just use an old washer bottle to stuff the overflow pipe in. As long as the pipe is under water it will refill the rad as it cools down :)
Cheers,
Gavin :)


I really don't think that is gong to work. It will only overfolw if the pressure relief valve opens. By the time the rad is cool enough to take back water the valve will be shut. It needs to be a propper pressurised container. We have don it on the TT and it is brilliant, no more topping up the water.



I beg to differ. Post 92 minis all have an expansion tank tucked up under the nearside wing. The rad cap is different, it allows the vacuum generated in the cooling system when it cools, to draw back in anything it has blown out.


Fuck me what a surprise a car designed with a expansion tank works with an expansion tank. I think that I said modify the rad cap to take out the pressure relief and it will work, but it HAS to be a pressureised container, not a can or redbull.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

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Sprocket

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Preston On The Brook

28th Nov, 2008 at 06:34:12pm

Thats funy because the expansion tanks fitted to the mini are not pressurised *wink*
]
Oh and the rad caps still have the pressure spring, they also have an extra rubber seal around the top of the neck. I suspect they have a vacuum valve as well

Edited by Sprocket on 28th Nov, 2008.

On 26th Oct, 2004 TurboDave16v said:
 Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........

Paul S

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Formerly Axel

Podland

28th Nov, 2008 at 07:07:25pm

Any car cooling system is closed circuit IMHO.

They make the statement that it can only be used in that way to stop people using them with a negative suction pressure as that will cause early death of the pump.

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Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

hario

444 Posts
Member #: 2885
Senior Member

30th Nov, 2008 at 06:19:37pm

Agree with paul s, it seems to be more of a disclaimer than anything.


Ben H

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Melton Mowbray, Pie Country

30th Nov, 2008 at 09:22:02pm

I agree too, an electric pump will work fine on the mini system, but a big improvement is the addition of an expansion tank, however the rad valve works.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.

hario

444 Posts
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Senior Member

1st Dec, 2008 at 11:41:34pm

I have bneen seriously considering this option for a while, have a pump from an audi, but the craig david people want me to buy their control box for flow modulation but i think flow should be kept up at all times to maintain water pressure to keep it packed in tightly around the ex. valves and stuff. And only cooling should be modulated (fan) but then the thermostat would have to be kept for the bypass function no? Otherwise the motor would go poof..
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