4.5 Ajp adding Electric water pump.

[LittleBlackCerby]

So as mines in bits for a change I’ve decided to add a Electric Waterpump in line with the mechanical one to help flow the water. On top of that I’ve also changed and rerouted my water pipes to make room.
Out of curiosity has anyone else done this and got some pictures. Not going to lie I got the idea from Adrian O’Neil, I just can’t get hold of him for advise. It’s not finished yet as I’ve had to send the pipe work off to be welded but for now the pumps in ??

[TheRainMaker]

Stupid question maybe, but what do you need an electric water pump for?

[CerbWill]

I've done away with the mechanical pump completely and fitted a CWA400 in the front near side wheel arch where the thermostat used to be and then stacked 1 of Racetech's thermostats on top of it. No need to hack the steel pipework about then. As its survived Jool's dyno it cant be bad. As for why you'd want one, engine speed independent cooling. Improves cooling when idling in traffic.

[plasticman]

That looks good . How do you control the pump ?

[aide]

Hi Nev

Here is a pic.



If you are getting the TinyCWA controller ask Tobias install the custom Cerbera firmware that he did for me on it.

Might stick a relay on the pump to shut it off when the start button is pressed.

HTh
aide

[aide]

Some more info from this

aide said:

Hi
The pump I have is a Pierburg CWA200 and the Controller is from a guy in Germany.
I got him to mod the firmware on mine to make the target temperature range narrower and more granular.
http://www.tecomotive.com/en/tinycwa-en
It's never missed a beat and the delayed shutdown is great.
HTH
Aide

ETA: this thread helped me choose the pump: http://www.pistonheads.com/gassing/topic.asp?t=115...

Page 14 of this has all the pump details:
http://s1.teamlearn.de/QuickPlace/b-9716-kfz-hesse...

Edited again just to add. Once we successfully reined-in coolant temp with the new EWP, a year later, we used it to control oil temp by adding a speed six oil cooler and an oil stat.

Edited by aide on Wednesday 18th November 23:52

[magpies]

I've fitted an electric water pump to my Jag engine S1. The kit purchased from Tecomotiv included a CWA200 as used in all BMW 6 cyl cars since 2004 (other sizes available) and a tinyCWA controller which has 10 or so pre programmed outputs. It can be set up with or without a thermostat - mine is without.
Great piece of kit.

Edited by magpies on Monday 27th April 18:44

Edited by magpies on Monday 27th April 19:01

[magpies]

[LittleBlackCerby]

Hi Adrian, how are we?
Can I ask what the custom firmware for the cerbera is/does?
Did you set yours up so that the fan came on with the ignition off too?

[aide]

Hi Nev

The firmware mods change the target temperature range and give you a finer control.

The microcontroller has a 16 way switch on it

Some of the positions are dedicated to testing the pump and fan, plus bleeding the system.

The rest of the positions are dedicated to specific target temperatures with 5 degree increments.

The original range was something like 70-105 degrees with 5 degree jumps.

But for a Cerbera we would never run the car as low as 70, 75 or 80 (most stats close at 78 so it's impossible anyway) and wouldn't want it running at 105, 100 or 95 either.

So I asked the guy who designed it, Tobias, if we could change the range and granularity to suit the target temperature of the Cerbera. I think I actually centered the temperature modifications around the cut-off target temperature of Jools cooling mod chip so that they could work together.

The result is that the range of target temperatures is between 85-92 degrees with on degree selectable increments.

The delayed shutdown is automatic Nev, once the ignition is off the system runs the delayed shutdown if the coolant is over a certain temperature.

Best of luck!

Considering the time and cost, Dom at powersperformance can swap in a new MBE ECU that can do all that.

It just wasn't an option at the time when I was doing all this work.

aide

[CerbWill]

Aide, a wiring diagram of how you have yours set up would be interesting. I think I need to add some more relays and power feeds to mine so the TinyCWA can run the fans after shutdown.