Electric Water Pumps (EWP)

[ED_MX5]

Been following this for a while.
I have a Davies Craig unit to install. I've chosen the simple way of using the normal water pump and just cutting off the impeller. The part I'm curious on, has anyone had issues with space on the lower hose at all?
Got pics installed I can take a look at? Seems to be damn tight down there for it to fit well.

[3gress]

Madjak can you or anyone else spot any flaws in the diagram i posted earlier showing my previous plumbing arrangement? It ran without problems and logs showed a minimal variance in temps across a range of driving conditions.
It was running reverse flow, single entry an-12 hose to rear of block and an an-6 fitting at front of head to allow any accumulated air pockets an escape route into air seperator circuit.
After acquiring the necessary fittings to split a single an-16 line into two an-12 lines the whole assembly weighs a little too much for my liking. Id' prefer to run as indicated in previous diagram to cut down on weight and plumbing complexity.
I am certainly keen on commissioning a milled pump adaptor body from you madjak if you could pm me on the possibility

[madjak]

I have lots missing from my car so there is lots of room on the hotside of the engine. Mine will sit just above the sway bar.

[madjak]

3gress, nothing wrong with your flow path from what I can see... just as long as that smaller 6AN restricts the flow enough so that 80% of the coolant runs down through the block which I think it will. From my tests it should be fine and as you say will take out the air from the head.

I really see no issue running our heads reverse flow. I still think from a performance point of view its better to feed in from the front and rear of the head so you get the same temp across the whole head evenly.

I've gone and done my typical thing of taking on too many projects at one time. I need to just go and finish them off before something shiney catches my eye again!

At the moment I have several projects at various levels of completion:
Half finished lightweight crank
Control panel and car rewiring
3D printed R-lip brake ducts
Small alternator + relocation
EWP ready to install
Billet fuel rail ready to install
DIY porting a head
Rotex engine build

I can machine you up a billet EWP plate with stock tensioner location and stock radiator mount. I want to try some new CNC software so I'll give it a whirl on that. I'll add it to my list!

[madjak]

EWP installed. Just need to wire it up and fill with coolant.

[ED_MX5]

Madjak you champ! That's exactly what I was looking for!
Did you find it felt sturdy just being held by the hoses? I know that's the recommended way to have them mounted.

[smy0003]

Unbelievably cool.

[ED_MX5]

Unbelievably cool.

Are we playing dad jokes now?
Cos if we are I can "pump" them out

[bruce]

I like your exhaust wrap. What brand is it, how did you secure it?

[madjak]

I like your exhaust wrap. What brand is it, how did you secure it?

DEI titanium exhaust wrap secured with stainless ties. https://m.summitracing.com/parts/dei-010127

It's fairly easy to put on and still looks good even though I've spilt a bit of oil and coolant on it. It also works brilliantly, so much so that you can touch the headers after 5 hot laps of the track.

[ED_MX5]

Similar product avail at Auto One or anyone that deals with National Auto Parts (NA Parts).
Part number for a 2" 50ft roll is 362050. Called Basalt wrap.
They also supply the stainless ties to secure.
If anyone finds that useful.

[3gress]

Sweet. Keen to see how it performs on a hard worked track car. With the ewp controller running the water pump i assumed it wasnt as necessary to use an oil thermostat inline with the oil cooler on my engine (street car) as the ewp controller would just run the pump slower when needed. Make sure to throw some temp logs up for us guys playing at home eh'?
What type of failsafe are you using? Low flow/coolant warning or such and do you have the earlier type ewp controller or later model with lcd screen?
The rear AN fitting is a tight squeeze in there, you could alternately use a modified oem thermostat cover with a weld on bung to gain clearance if needed.
Top work mate.

[madjak]

Similar product avail at Auto One or anyone that deals with National Auto Parts (NA Parts).
Part number for a 2" 50ft roll is 362050. Called Basalt wrap.
They also supply the stainless ties to secure.
If anyone finds that useful.

Don't scrimp to save a few dollars on the cheap SS ties. I think my wrap came with ties, but I also bought a pack of good ones... there was a big difference in how much load they could take before they slipped.

[madjak]

Sweet. Keen to see how it performs on a hard worked track car. With the ewp controller running the water pump i assumed it wasnt as necessary to use an oil thermostat inline with the oil cooler on my engine (street car) as the ewp controller would just run the pump slower when needed. Make sure to throw some temp logs up for us guys playing at home eh'?
What type of failsafe are you using? Low flow/coolant warning or such and do you have the earlier type ewp controller or later model with lcd screen?
The rear AN fitting is a tight squeeze in there, you could alternately use a modified oem thermostat cover with a weld on bung to gain clearance if needed.
Top work mate.

I don't have a Davies Craig controller. I bought my water pump for $60 off gumtree! haha... I'm cheap. I'm planning on running it via the Haltech and have a Jaycar SSR to drive it, though I'll probably just run it 100% whilst on the track anyway as I'm not worried about over cooling. I'll wire it up so that I can override the ECU and keep it running whilst the ignition and engine is off. Ideally, it will be set up to cycle the coolant slowly, with the radiator fan also running until the coolant temp drops close to ambient. I'll time it out to figure out how long it needs to run for then put a small timer on it.

Currently I don't have a failsafe other than the coolant temp sensor in the head which will trigger an engine cut. I might run a second coolant sensor for logging purposes just to see how it all runs.

The rear AN fitting has a bit more room than it looks in the photo. There is around 15mm clearance at the back of the fitting. Just enough to disconnect it from the flange. I could have welded the bung to the thermostat housing... it would have been cheaper and easier in hind sight but I do like the big low profile 12 AN fitting. It's very impressive

My setup is a bit different to what others run so it's not really the best benchmark for the EWP. It has a whole stack of oddities that you don't get in most engines. Small Honda radiator, oil cooler with no thermostat, no oil squirters, grouted block (so less coolant volume and less head load on the coolant), no heater or other coolant feeds, E85 etc. I don't think it's going to be much different than a stock water pump given I already had very fast coolant flow in the first place. The main benefit for me will be cooling down the engine in the pits and running the reverse flow coolant path through the head... but it's hard to show a difference in the logs given the sensor location and other factors.

[NitroDann]

I don't have a Davies Craig controller. I bought my water pump for $60 off gumtree! haha... I'm cheap. I'm planning on running it via the Haltech and have a Jaycar SSR to drive it, though I'll probably just run it 100% whilst on the track anyway as I'm not worried about over cooling.

This is not as easy as you might think. Been there done that, It can work, but its not that easy.

Dann