beaver34
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| posted on 9/5/09 at 10:41 PM |
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elec water pumps
hi there, im having cooling issues in the car, and are thinking of getting rid of the standard water pump setup in favour of an electrical unit, any
one using one on here, pro's and con's of it, and the best ones to go for etc...., thanks al
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owelly
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| posted on 9/5/09 at 10:46 PM |
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Scootz had one for sale here http://www.locostbuilders.co.uk/viewthread.php?tid=112557
Sorry I can't help anymore. I made my own leccy water pump and it was rubbish!
http://www.ppcmag.co.uk
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blakep82
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| posted on 9/5/09 at 10:48 PM |
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damn, wrote a big reply and lost it when i pressed send 
the long and short of it was, don't. sure they have benefits, but if there's something wrong with your cooling system as it is,
it'll be a waste of time and money.
the standard mechanical pump should be more than up to the job, there must be some other problem
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IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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beaver34
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| posted on 9/5/09 at 10:55 PM |
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quote:
Originally posted by blakep82
damn, wrote a big reply and lost it when i pressed send
the long and short of it was, don't. sure they have benefits, but if there's something wrong with your cooling system as it is,
it'll be a waste of time and money.
the standard mechanical pump should be more than up to the job, there must be some other problem
the issue i have is being adressed, just these seem good, and it means i can do away with the normal one along with the long belt and tensioners
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blakep82
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| posted on 9/5/09 at 11:02 PM |
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ah ok, the original post seemed to suggest you thought the elctric pump would fix the problems.
davis craig seem to be the most popular type.
aside from that, i've not used one
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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beaver34
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| posted on 9/5/09 at 11:15 PM |
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quote:
Originally posted by blakep82
ah ok, the original post seemed to suggest you thought the elctric pump would fix the problems.
davis craig seem to be the most popular type.
aside from that, i've not used one
yeah no probs, thanks though, they seem quite smart in the way they adjust flow according to water temp
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blakep82
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| posted on 9/5/09 at 11:22 PM |
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yeah, especially if you get the automatic controller, but all in the kits not cheap.
they way i always thought about it is though (and i may be very wrong):
if the engine and pump are spinning fast, the engine wants to get hotter and the water spends less time in the block, but its also less time in the
radiator to cool down
if everythings going slow water spends longer in the engine heating up, but more time in the radiator to cool down.
overall, i'm not sure how much difference it makes changing the pump speed, but yes it will reduce all the belts and stuff. it'll make
things look neater.
if your aim is to free up horsepower by getting rid of belts and stuff, bear in mind that electric items will take power and have the same effect.
conservation of energy (i think its called) and all that
sure someone will correct me though 
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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bilbo
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| posted on 10/5/09 at 08:08 AM |
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I'm running a Davis Craig pump and controller on mine.
To be honest, it's been a PITA to get working right. I went through two of the controllers, and I then had all sorts of problems with it boiling
over, until I realised that the temp sensor for the pump was reading much colder that the water really was.
I also had a lot of issues with how to mount the thing as it doesn't really have any proper mounting lugs.
You can see my solution here: linky
It's all working great now, but in all honesty, if you have a working cooling system using the mechanical pump, then stick with that.
---------------------------------------
Build Diary: http://bills-locost.blogspot.com/
Web Site: http://locost.atspace.com
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mark chandler
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| posted on 10/5/09 at 08:36 AM |
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Locost is use a boat bilge pump, I know a few people with RV8 rear engined off-road racers with the rad in the front that use these.
link
This chap did some investigation, have a read up on the above link.
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grazzledazzle
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| posted on 10/5/09 at 10:18 AM |
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Well i have views on this.
I have had three of the pump bilbo is using on my car in 2500miles using the controller. I hate to break it to you bilbo but they have an inherent
fault which causes the impeller to seize. Having done some research following my failures i was staggered at the number of people who have had
problems.
Davies craig have just brought out a completely new design which i can only assume is to address the fault. I'm using it with their digital
controller and touch wood it cools the engine and maintains a constant 80-85 degrees even on the rolling road. The down side is it cost £325! If i
could have kept the original belt pump i would have.
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