Weldon 14000 Pump Speed Controller

[XKLABA]

Ok so I have brought a Weldon speed pump controller to try and quieten down my Weldon 2025 pump

The controller says it is PWM controlled but the wiring diagram shows it as a closed circuit with a POT dial to preset pump speed and a toggle switch for race mod

I want to hook it up to one of the spare PWM outputs of the computer and let the computer run the controller automatically

Has anyone used or hooked up the Weldon 14000 speed controller and be able to tell me which terminal on the controller to hook into for the computer output ?

[XRATED]

It's not quite as simple as that...

Best you could do without getting super trickery would be to use an analogue output, set up as a load/rpm/boost switch to provide ground to the controller in place of the 'race switch'.

[NismoSTune]

on a somewhat topic related question, has anyone used this controller or the Aeromotive controller for 2x bosch 044 pumps? Currents seem to be close the the limit but maybe doable?

[XKLABA]

It's not quite as simple as that...

Best you could do without getting super trickery would be to use an analogue output, set up as a load/rpm/boost switch to provide ground to the controller in place of the 'race switch'.

The computer I have has a fuel pump strategy already built in but it runs though the fuel or IGN out puts as a PWM

I have had a email from Jim at weldon telling me it will not take a PWM input an I don't have any analog outputs left( I don't think anyway) so what I was looking at doing is getting a 12v map sensor as the reference input instead of the potentiometer then have the computer set a 12v output to turn on "race" mode when the car goes over 21psi boost ( low boost is 19-20 )

[Ben C34]

You could use a hobbs pressure switch. You can buy adjustable ones. Unless thats what you meant!

[XKLABA]

The Hobbs is on/off, where a map sensor signal increases with boost which will increase pump speed as it climbs, basically an automatic potentiometer, the input of the controller is a variable, the more voltage inputted the faster the pump spins

Though you could use the Hobbs to trigger "race" mode

[scotty nm35]

You told us the Weldon was the shit...

Looks like the Fuelab with PWM input is a cheaper/better option then, and quieter?

[XRATED]

Sounds entirely to much f-ing around for veeeeery precise fuel pump speed control.

Any particular reason you wan't this level of control over your fuel pump? I would have thought 2 speeds would be more than sufficient.

To mee it seems like alot of effort for little to no gain, another system that gets needlessly complicated and can have catastrophic consequences...

... personally, I like knowing my 2345a is running flat out and that the fuel will be there when I need it.

PS fuel lab is shiiit, Weldon is best!!! ha ha ha

[Simon-S14]

realistically the OEM fuel pump speed is on/off by nature... at idle and low rpm its spinning at a lower speed then as soon as it gets over a set rpm it ramps up to a higher voltage. This is what i would be setting up with the after market pump...

[XKLABA]

the pump is awesome piece of gear, just very very............very loud, and given it is a street driven car I want to make it as quiet as possible so when sitting at traffic lights I'm not getting to much attention, in a blue R34 GTR

we had it on the dyno the other day and the fuel circulated so fast it just heated up the surge tank, but then that could have also been because the intank E85 pump wasn't working

the controller is just a little less flexible then I wound have though and when I looked in to the controller it said it was a PWM unit but no where I found said it wouldn't take PWM input

and did I mention the pump is VERY loud, louder then the 4" exhaust

[XKLABA]

realistically the OEM fuel pump speed is on/off by nature... at idle and low rpm its spinning at a lower speed then as soon as it gets over a set rpm it ramps up to a higher voltage. This is what i would be setting up with the after market pump...

that's right and I can do this with the Weldon controller, but my computer is set to run full variable so I can set it to run at any set level at any given RPM/load so I can set it up to run the pump at say 10% more flow then needed through the whole rev range

so when sitting at traffic lights or in a car park the pump is barely turning meaning I'm not just pumping fuel through the motor back to the surge tank heating the surge tank up

[Simon-S14]

for what its worth i run 2x 044 as mains with a walbro lift, fuel circulates at constant voltage to the pump. i also have fuel pressure sensors and temp sensor in rail and surge tank... never see fuel temp rise above 35 degrees max with e85, no fuel cooler

[XKLABA]

for what its worth i run 2x 044 as mains with a walbro lift, fuel circulates at constant voltage to the pump. i also have fuel pressure sensors and temp sensor in rail and surge tank... never see fuel temp rise above 35 degrees max with e85, no fuel cooler

That was going to be my setup till I was told 044 prefer to be gravity feed and my setup wouldn't allow for that so I went the 2025

I have the Walbro E85 intank as a lift pump which flows 500L/H 0-30psi feeding the surge tank and the Weldon which flow 590L/H@ 80psi and 620@ 50 psi, the 044 @ 80 psi flow 260L/H

Slowing the fuel down isn't really that big of an issue as I drove the car for the first time last night with the new setup and after 45min drive the surge tank was just warm but the noise, I have to do something about that which is the main reason for slowing the pump down

I have fuel pressure and temp sensors also, I'll have to go into the logs an see what the temp got to

[Ben C34]

First I've heard about 044s liking to be gravity fed.

Doesn't really make sense.

[XKLABA]

I went to MSCN to buy the pumps and a bracket told them what I was doing with them and they told me not to do that with the 044s putting them selves out of a sale, so given that I'd tend to believe what they said

I then mentioned it to my tuner and he backed them saying the same, 044s should be gravity feed, both company's sell 044s neither sell Weldon and both told me for my setup go Weldon or Aeromotive

044s like to pump fuel not pull fuel, thats just what I was told

[XRATED]

In my opinion weldon make some of the best fuel pumps available... from a delivery, engineering and reliability standpoint. Much better option than multiple o44's.

Yeah they are a bit loud, I put mine in a sound resistant case for long trips.

I've always been a big believer in single pump arrangements...

I'll PM you with a solution.

Cheers

Justin

[XRATED]

In my opinion weldon make some of the best fuel pumps available... from a delivery, engineering and reliability standpoint. Much better option than multiple o44's.

Yeah they are a bit loud, I put mine in a sound resistant case for long trips.

I've always been a big believer in single pump arrangements...

I'll PM you with a solution.

Cheers

Justin

[jjman]

and did I mention the pump is VERY loud, louder then the 4" exhaust

haha, I need to see a video of this bad boy in action.

Post one up mate, we need to hear it in all its glory

[Piggaz]

haha, I need to see a video of this bad boy in action.

Post one up mate, we need to hear it in all its glory

Surprised you can't hear it from your lounge room! Haha

[r33_racer]

We use the 2033-A pump as a lift pump in the race car and it is quite loud!

We had a few lift pump problems with running methanol. So far the Weldon pump is proving its worth nicely, if its reliable then the noise isn't important, at least in a racing environment.

Thought of Weldon after reading a few of your posts about these pumps Justin. They are top notch!