Electric Water Pump

[mensrea]

Would this work on 1J ?
http://www.summitracing.com/parts/MEZ-WP520/

Would there be horsepower/efficiency increase with electric pump over standard one ?
Also, 2J and 1J have the same oil pump, is that correct ?

Thanks for any help

 

[Cam_Ron]

That will work on 1j and 2j without issue. Power increases by reducing parasitic loss. How much? Thats anybodys guess. The 2jz-gte and the 1jz-gte oil pumps are the same part.

 

[Poodles]

Only for drag strip use, I wouldn't put it on a street car.

 

[aphxero]

it's good for drift cars too. Coolant can be full blast all the time. Really helps overheating. Street cars its stupid.

 

[IJ.]

I used to run a DC EWP110 in series with the stock pump to ward off cavitation at high RPM and give it more flow at idle, worked well but I wouldn't trust an electric as the only pump.

 

[Poodles]

it's good for drift cars too. Coolant can be full blast all the time. Really helps overheating. Street cars its stupid.

Until it dies

Also the load on the electrical system is very high, it's not going to be any more efficient than a factory setup. Drag cars that run off batteries only it would be great for.

 

[Dimman]

Why would an electric water pump be any less reliable than an electric fuel pump? You trust an electric pump to keep your engine from leaning out under load, what would be different for a water pump?

From what I understand for the efficiency is that the impellers are usually better designed as they can be more appropriately matched to the pump's optimal rpm (which can be electronically controlled) and you can remove the thermostat, which causes a restriction. They only draw a lot of power when they are maxed out, and because of better impellers and less restriction they can pump water more efficiently at lower pump rpm.

I've read up a bit on the Davies Craig EWP110 that IJ mentioned, and it sounds like a potentially really good system.

 

[IJ.]

 

[bioskyline]

dimman

casue when the fuel pump dies your car shuts down. water pump dies, car will run and overheat if you dont watch the temp gauge. only downside i can see.

IJ that looks like the water pump from my washing machine.

 

[mensrea]

It only draws ~7 amps, that don't seem to be that much.

IJ, how is that pump working out for you ? Is that your DD or track only ?

 

[Poodles]

It was not his main pump.

 

[IJ.]

It only draws ~7 amps, that don't seem to be that much.

IJ, how is that pump working out for you ? Is that your DD or track only ?

I had it set up on the MoTeC so it was on demand and worked very well as they can be a pass through pump when not powered the Mech pump on the engine covers 90% of the duty.

 

[presidentialshotta]

The davies site said that this pump can replace the original pump.
I have emailed them but still waitin on a reply. Do they mean you can physically remove the original pump and blank it off the hole on the block some how and install the electric pump in the engine bay?

I am tryin to decipher if this electric pump is the better option as opposed to buyin a new OEM pump for a 2jzgte.

Lets say the OEM pump is leaking and needs to be changed. instead of buyin an oem jz pump can i just used the davies electric and condemn the oem?

 

[IJ.]

Yes it can be used standalone (personally I wouldn't trust an EWP as the only pump)

 

[f00g00]

My 1988 bmw 750il has an inline electric pump to assist the main water pump when running the heater system. Its about the same size as a fuel pump but has a heater size hose output. Wouldn't be enough to run the system but might give it a nice boost at low rpm. I sure could have used something when my crank pully disintegrated.