Anyone use one on there cars?

Pro's

Con's

What are they like for cooling?

 

whats wrong with the standard pumps then?

 

std pumps sap lots of power! my boss does stock car racing and they dont use radiators or waterpumps but steam systems, dunno how they work but it takes out the pump and he recons it does make a difference....


ive thought about it a little bit mate, can get an electric pump from demonthieves for about 130 quid iirc!

 

but im sure we are talking road cars

 

Davies Craig one here (plus controller)

But it can't sing lol

It runs on after engine shut down to keep cooling the engine to take heat soak from the manifold away from the head.

Its fully controlable with engine temperature, so varies the amount pumped when cold or hot etc.

Increased Bhp by just over 5%

 

Thanks NUTS

I'm going to be fitting a GRS soon and there has been bad storys of RS Turbo cars over heating with big intercoolers

I was told the electrical pump will help it keep cool

 

if you see an increase by 5%, (which i dont think you will) on a 100 BHP car, that means the new pump should really have a 5hp motor on it! cant see it myself

 

Seriously? Thats a lot on a 400-500bhp car...

 

I added the figure to wake the thread up lol but it did increase my bhp Mine isn't a 400 - 500 bhp car Steve

 

i know

 

)you will increase BHP simply because you have taken another LOSS from the system,, do you get the same pumping flow rates from these units as a water pump tyrning at High rpm? (i was going too try and work out a average gearing from crank pully too water pully but i cant be arsed )

what if something goes wrong with the pump controller? how expensive to replace?

whenever the engine is rotating so is your water pump (well unless the belt as come off, impellar loose)

 

Controller was only about £90 Gareth.

 

i did mean to type pump/controller

i really cant see where any real world gains would come from

 

The gain comes from like you say - removing the losses.
Same reason as race cars don't run alternators etc. But that was not my goal.

Don't forget mine is a K series, prone to doing head gaskets etc (in fact 1 in every 500 competition miles). This has been linked (but not proven) to be connected with the water system, so for me it has to be trialled.

Its now shifting more water around the engine in a controlled manor, and the ability to keep it circulating when the engine is not is a great bonus.

It warms up quicker from cold, and cools down quicker when hot.

http://www.daviescraig.com.au/main/display.asp?pid=47
if you havn't already googled it

 

are you sure this is a bonus? yes i know it is in the way of getting everything too its working temp faster, but what are you doing too get this? your creating localised hot spots which would normally be moved about by the pump! this wouldnt help head gasket problem

i can see a gain from moving the water round once engine is switched off,, but too how great this gain is debatable

 

http://www.daviescraig.com.au/main/display.asp?pid=44

How Prodrive fit them to 600bhp winning Ferrari's

 

how did you know my achilles heel is ferraris

im sure they are using them as booster pumps though

edited cos im wrong,, they remove the water pumps

 

It pumps around the whole system when cold, not just the engine, so the hot spots are actually cooler, than if it had a thermostat.

It constantly monitors the temperature of the water and adjusts the speed to suit.

 

its will only monitor the temperature at one point of the engine waters system!

the only reason why ferrari/prodrive will run it is because its a race car with tight rules,, any gain is a GAIN too them

there really isnt anything wrong with a normal water pump (well appart form the brake horse power it losses at peak)


ps its good to have a adult debate

 

but how much of a gain does it really give (by removing the losses)

 

For me I refer to the answer I posted earlier Steve

My water temperature sensor is in the same place Gareth, so the ECU knows no different, other than it reacts quicker to the changes.

I only had 1 in there previous to this system remember, so nothings changed other than flow rate / movement of water around the system.

The normal water pump and thermostat housing on the K Series engines is suspected to be partly to blame for their noted troubles, thats why companys like QED do an uprated remote housing for it.

It helps, but not as much as removing the system completely and going all electric.

Power gains were not my intended interest for trying it, but have come as a bonus I suppose.

 

of course there are gains to be had by fitting an electric water pump, same as there are from electric PAS pumps and the like.

but there aren't that many production cars running electric water pumps yet, whereas there are plenty using electric PAS pumps. that's obviously because there are bigger gains to be had from the PAS as it's a bigger loss in the first place, but even so, with the challenge to constantly reduce fuel consumption and emmisions if it was worth doing then they would.

having said that, they are also more interested in production costs, and mechanical water pumps are obviously much cheaper than electrical ones at the moment.

as gareth says, it's done in motorsport as sometimes any gain is worth having, even if the costs are relatively high.

i have a bosch electric water pump, but will only use it for the coolant circuit for my chargecooler.