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Old 01-08-2008, 11:15 AM   #1 (permalink)
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Lightbulb Electric water pumps.
Any thoughts on the benefits and drawbacks of electric water pumps?

Not the water injection but an alternative to cycle engine coolant around the block.
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Old 01-08-2008, 02:26 PM   #2 (permalink)
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Default Re: Electric water pumps.
guessing they would be easier to change
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Old 01-08-2008, 03:29 PM   #3 (permalink)
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Default Re: Electric water pumps.
With an electric water pump you can set the engine temp to low for more power or higher for better economy! Most kits i've seen require the removal of the thermostat and the existing pumps impeller to be removed. The whole pump and controller should be around £200. It really does sound like pluses all round for this.

I've seen Davies Craig models by the way which are designed for motorsport use.
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Old 02-08-2008, 09:32 AM   #4 (permalink)
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Default Re: Electric water pumps.
AN electric oil pump and heater in addition could completely eliminate startup engine wear
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Old 02-08-2008, 04:12 PM   #5 (permalink)
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Default Re: Electric water pumps.
Is the heater for the oil or the engine. Can you actually get them it will no doubt help on cold mornings. You could always light a disposible BBQ under the sump.
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Old 02-08-2008, 10:23 PM   #6 (permalink)
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Default Re: Electric water pumps.
If the coolant was heated (kenlowe used to do something of this type 20 years ago) then the oil would benefit somewhat as well.

Not sure I fancy lighting a barbie underneath the car really.
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Old 04-08-2008, 09:02 AM   #7 (permalink)
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Default Re: Electric water pumps.
Smoke me a kipper - I'll be back for breakfast!
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Old 04-08-2008, 12:07 PM   #8 (permalink)
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Default Re: Electric water pumps.
do the innut ( eskimoes ) not have something like this on their own cars. not powered by the engine itself but when they park up they plug it in. the heater keeps the coolant and oil warm enough not to freeze / sludge up due to the extreme cold
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Old 04-08-2008, 08:10 PM   #9 (permalink)
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Default Re: Electric water pumps.
Probably cheaper to leave the engine running
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Old 05-08-2008, 07:43 AM   #10 (permalink)
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Default Re: Electric water pumps.
Or wrap it up in a massive thermal blanket overnight.
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Old 10-08-2008, 04:51 PM   #11 (permalink)
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Default Re: Electric water pumps.
The problem is reliability, even on there pages it says a specific number of hours which when I looked it wasn't that much driving every day. For motorsport hell yeah, for me- no thanks
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Old 11-08-2008, 01:32 AM   #12 (permalink)
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Default Re: Electric water pumps.
Quote:
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You like Red Dwarf also! I have that T-Shirt
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Old 11-08-2008, 09:04 AM   #13 (permalink)
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Default Re: Electric water pumps.
I Didn't realise the electric water pumps have a run time limitation. Shame really. What are those limitations then?

Oh yes - red dwarf, Babylon 5, Start Trek, Dr Who etc.... Bit of a scifi nut really. I've been found out now!
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Old 11-08-2008, 11:19 AM   #14 (permalink)
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Default Re: Electric water pumps.
nothing wrong with the dwarf, way off topic have you seen the us pilot eposide if not dont bother it really is that bad
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Old 11-08-2008, 11:44 AM   #15 (permalink)
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Default Re: Electric water pumps.
Electric Water pumps are also very efficient, You gain power back from the engine by removing the belt driven pump and the additonal load on the alternator is minimal compared,
With modern oils such as Magnatex etc, i wouldn't worry to much about cold start engine wear, only if short journeys are the normal,
I would still run the thermostat and have the pump running the whole time otherwise hotspots appear and no heat into the car
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