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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
3rd May, 2012 at 08:34:10pm
what is wrong with the mechanical pump? 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........ |
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 136 Posts Member #: 5193 Advanced Member Dunstable |
3rd May, 2012 at 09:45:05pm
it's pointing the wrong way for me as I'm having a front mounted rad and seems logical to put an electric one in its place :) |
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 1183 Posts Member #: 6926 Post Whore Accrington |
4th May, 2012 at 11:06:51am
im having an electrical one to keep the engine cooling when i turn it off. will a 115ltrs/min be ok?
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 8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
4th May, 2012 at 11:39:21am
Its only a theory but, im assuming that the 115ltrs/min is measured as a non-restricted flow rate. The actual flow rate will be dependant on the restrictions in the system.
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248 Posts Member #: 7936 Senior Member DK-8450 Hammel. Denmark |
4th May, 2012 at 03:07:05pm
I have a old/used bosch pump that i tested. It gave 13 liters in 1 minute. I am plannig on fitting it as i believe it is enough flow.
If i have more toys than you when i die, I WIN |
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136 Posts Member #: 5193 Advanced Member Dunstable |
4th May, 2012 at 04:35:14pm
On 4th May, 2012 matty said:
Its only a theory but, im assuming that the 115ltrs/min is measured as a non-restricted flow rate. The actual flow rate will be dependant on the restrictions in the system. That what my presumption was that once you attach the radiator it wil be knocking it back a peg or 2 as that is alot of water its got to flow through a radiator and then you have to push it through the engine aswell so actual flow might be knocked down Whilst at the rad shop we went into core sizes now im sure i read on here somewhere that the monkey copies of the genuine cinquecento radiators have the circle type cores and this was causing a few people some issues as the water was flowing to quick, i cant find who said this but im going for a oval cored radiator thats a bit thicker than standard cinquecento radiator so presumably i should be alrite |
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 16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
4th May, 2012 at 04:43:01pm
I said that, based on John's experience of his chinc rad. On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it 
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8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
4th May, 2012 at 07:39:33pm
Ive read all sort of figures/calculations on flow rates. Most of which work out between 80 to 120 ltr/m, My pump flows 80 ltr/m and I would say it is about spot on.
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248 Posts Member #: 7936 Senior Member DK-8450 Hammel. Denmark |
4th May, 2012 at 07:58:48pm
On 4th May, 2012 matty said:
. I'd be amased if a 13 ltr/m pump would keep up in all honesty.  Wonderfull. This has be tested. This will keep me busy for hours 
If i have more toys than you when i die, I WIN |
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136 Posts Member #: 5193 Advanced Member Dunstable |
4th May, 2012 at 10:39:45pm
excellent cheers lads although im a long way off i should have a price next week of the rad im getting made for the car :)
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1183 Posts Member #: 6926 Post Whore Accrington |
5th May, 2012 at 08:25:18pm
same with me, i havent bought the pump yet but im wanting to buy it soon.
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3594 Posts Member #: 655 Post Whore Northern Ireland |
6th May, 2012 at 11:14:14pm
On 4th May, 2012 Johnny said:
im having an electrical one to keep the engine cooling when i turn it off. will a 115ltrs/min be ok? What are the complications of having too much flow? Thank you An electric pump will never flow too much, only too little No electric pump will match the flow of a mechanical pump. Flow is good ! 9.85 @ 145mph
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8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
6th May, 2012 at 11:36:07pm
How does that figure, a pump will flow what it is spec'd to flow?
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136 Posts Member #: 5193 Advanced Member Dunstable |
7th May, 2012 at 12:15:29am
On 6th May, 2012 matty said:
I could well imagine a pump that flowed massively too much in an efficient cooling setup, it could overcool the engine and you'd never get it up to temp.
just a little food for thought here but surely it would be the other way round to much flow would mean that it wouldnt have time to cool the engine im not 100% sure on the matter but something flowing at 200litres per minute would surely cool less than something flowing at 80l per minute surely there is a happy medium ? |
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3594 Posts Member #: 655 Post Whore Northern Ireland |
7th May, 2012 at 11:41:53am
On 6th May, 2012 matty said:
How does that figure, a pump will flow what it is spec'd to flow? An electric pump will also flow constantly at max flow regardless of engine rpm where a mechanical pump needs higher rpm to produce max flow. Which also means that the pump could be running max flow at idle/low rpm which could be too much even with the stat shut. My engine has never run cooler than with an electric pump, but on very cold days on cruise (low rpm) the temps will creep down up to 10 degrees lower than stat opening temp. I could well imagine a pump that flowed massively too much in an efficient cooling setup, it could overcool the engine and you'd never get it up to temp.
Simple, the impellor is smaller and has less power to drive it than a mechanical pump. There may be times the electric will flow more than the mechanical, but ultimately as rpm rises, the electric pump will simply never have the power to match the mechanical. And people who know about thermodynamics and fluid flow etc etc ( certainly not me ) have always told me that more flow is good. It would be difficult to achieve a scenario where you ever flowed too much. And if a thermostat is fitted, it would be impossible to overcool. That's the point of a thermostat. I did try the Davies Craig stuff about 10 years ago on my Rover V8, IMO it was a piece of shit. I actually gave it away as I didnt have the audacity to ask money for it.. At no time was it ever capable of cooling the engine either using their controller or running flat out. Some good info on this site, and they make decent pumps. Ive seen their electric pumps used on LeMans cars built at Prodrive http://stewartcomponents.com/Tech_Tips.htm 9.85 @ 145mph
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