OldnDecrepit
Has anyone had any experience with fitting either electric water pumps or electric power steering?
Considering retrofitting them to my 740 - especially the water pump.
Vee_Que
Why? It's been done, but only on very high revving turbo cars to stop pump cavitation. Modern cars still run water pumps and there is a reason manufacturers do not stop using them, they will use an electric pump as a booster. But if it isn't broken, DO NOT FIX IT!
carnut1100
Electric water pumps have been used in factory cars before.
Why?
Because they take quite a bit of power to run.
Also with variable speed controlled pumps warm up happens a lot fasterand the thermostat can even be removed because water is only trickling until it warms up.
Likewise power steering takes several hp to run and electric systems are more efficient.
Not for everybody, but there are real advantages to be had.
Vee_Que
Name the cars please Greg. They are seriously not a common thing even on brand new cars except as a booster...
OldnDecrepit
Isn't there one on the new Volvo XC90?
deleted_user_160
I like the idea of an electric ps pump.
I guess its down to the application. for me an electric ps pump would assist me in low speed articulating. given my camber and low ride, coupled with offset
carnut1100
I think the first Magnas had electric water pumps but I'm not 100% certain.
I know i have come across another factory application somewhere but I'm to tired to think where at the moment...
Electric power steering is quite common.
Samman88
Electric power steering pumps can be used from later Citroens, Holden Astras and Toyota MR2s to name a few. They aren't expensive from the wreckers and are a nice mod.
They do draw significant current and lifetime can be suboptimal depending on how you trigger them. Many people run them continuously but others have triggered them with steering angle. Astra pumps are the way to go IMHO as long as you get the later style. Planning on mounting one where my charcoal canister sits at the moment on the 240 infront of the LHS wheel well.
Wiring is very simple.
As for the water pump, Davies Craig are the way to go...just make sure you get one that will flow the correct amount. They are awesome but a bunch of work to do properly with blanking plates etc...but then you can do fun things like reverse flow so you cool your head first, tapping the freeze plugs and circulating coolant after you stop the engine and so on. A lot of hassle though, and as much as I only want an alternator running off my crank, I probably couldn't justify the expense or risk the potentially devistating failure mode of an EWP.
Vee_Que
Ewp only is great for generators or race cars, they work well as a booster, my families vw t4 diesel transporter had one, it meant the cooling fans could stay on once the van was off, and they do fail a lot quicker than the water pump in that case.
BradC
My TT had one as an aux pump to cool the turbo after shutdown. I'm not sure my balls are big enough to run one as the only pump on a daily driver though.
Vee_Que
It wouldn't just be the turbo If its the cooling system.
BradC
Yeah, It was a general circulating pump but the reason I was given for its existence was the turbo shoehorned into a tiny engine bay, The N/A hairdressers versions certainly don't have it.
Vee_Que
I guess if the radiator is the same size yeah. The diesel t4 was non turbo and had one :s