New DW 400 Fuel Pump!

[TURBOELKY]

I just took mine out. Made a calculated 576HP at 23psi with a modified sending unit and wiring, -8 feed and -6 return lines on e85

 

[434nova]

With the proper fuel lines, wiring and voltage , the DW400 should be capable of 1000 HP.

A stock-type sender unit even modified cannot be up to enough flow for 1000 HP.

View attachment 324242

Nick can you pm me a price on the pump and sender unit. Thank you

 

[turbo89]

What of kind of power are they making with a single dw400 on e85?

Lots over 750.. more than enough to tag a 109

 

[TTipe]

I use a 450L with a BAP. This DW 400 sounds interesting but the flow losses through the feed line on the driver frame rail were higher than I thought. A modified fuel "chopper box" from a supercharged Buick performs the step function by either a voltage change signal or PWM. I doubt PWM since this was in place in the later 90's. Just thinking out loud.

 

[TTipe]

Great job done to establish baseline facts / show the data. I like to keep about a 15% cushion on the fuel so in my own case at present I need a couple of extra volts to the tank. Thanks for setting up these experiments & publishing the findings.

 

[A2000RICH]

I use a 450L with a BAP. This DW 400 sounds interesting but the flow losses through the feed line on the driver frame rail were higher than I thought. A modified fuel "chopper box" from a supercharged Buick performs the step function by either a voltage change signal or PWM. I doubt PWM since this was in place in the later 90's. Just thinking out loud.

as i stated in an earlier post this pump can easily supply enough volume and pressure for 800 hp with stock lines and stock hanger---------this was based on simple tests with a variable powersupply and a complete set of stock lines, hanger and pump attached to a fuel rail---------now that the new pump controller circuit in the eric turbo tweek ECM is available i am going to repeat those tests hopefully this weekend-------this controller interfaces to the pump with a power fet and can control the pump from a dribble to what i am going to estimate will be well in excess of 800 hp-------i know there are doubters but after the tests i will explain the physics behind this approach ---------it will spell the end of these troublesome double pumpers and costly large fuel lines.........stay tuned

 

[Mr.Spool]

as i stated in an earlier post this pump can easily supply enough volume and pressure for 800 hp with stock lines and stock hanger-----

on gas correct?not e85

 

[TTipe]

It appears like Brian Lorenz & some of the OH. boys have been using an FET card to control pump voltage years ago. Pictures surfaced with stock fuel feed lines in Brian's 9.6 car years ago. I believe Marty Green's car uses the same fuel pump voltage variable function as well. Doesn't matter who did what when. The importance is that this works. Richard the physics are pretty clear. (great job !!!) . I think one of the XFI aux channels could handle a transfer function from VE & boost.

 

[DR BOOST]

It appears like Brian Lorenz & some of the OH. boys have been using an FET card to control pump voltage years ago. Pictures surfaced with stock fuel feed lines in Brian's 9.6 car years ago. I believe Marty Green's car uses the same fuel pump voltage variable function as well. Doesn't matter who did what when. The importance is that this works. Richard the physics are pretty clear. (great job !!!) . I think one of the XFI aux channels could handle a transfer function from VE & boost.

Is there any info on how this is done? I would like to try something like this.

 

[Reggie West]

So would it only be good for about 450 to the wheels on corn? 800 x .3 more volume = 560HP -112 (20%drivetrain lose) = 448 to the wheels.

I’m running that pump and new hanger with 160s. -8 feed and -6 return. The goal is 700 hp to the wheels. I’ll let you know.

 

[TURBOELKY]

I’m running that pump and new hanger with 160s. -8 feed and -6 return. The goal is 700 hp to the wheels. I’ll let you know.

On e85?

 

[V6sleeper]

I’m running that pump and new hanger with 160s. -8 feed and -6 return. The goal is 700 hp to the wheels. I’ll let you know.

With your signature or a different combo?

 

[Reggie West]

With your signature or a different combo?

No with combo in my sig.

 

[Reggie West]

On e85?

Yes

 

[SpeedRacerX]

I just took mine out. Made a calculated 576HP at 23psi with a modified sending unit and wiring, -8 feed and -6 return lines on e85

Why did you take it out?

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[TURBOELKY]

Why did you take it out?

Sent from my SAMSUNG-SM-G900A using Tapatalk

Well, it’s complicated. Bottom line is, I didn’t need to take it out. That pump was putting in work.

 

[HellOnWheels]

Pat and I finally got time to do the testing of the 400 pump with stock hanger and lines. Only thing from stock we had to change to make things work was the regulator. I don't have time tonight to post all the details and measurements but I will say that the results were quite impressive. With the right controller this pump will easily support 80 pound injectors with stock lines! The 2 step controller needed will allow the pump to coast along at 9 volts while only drawing 9 amps ! At this level the restrictive return line is not overloaded and the regulator is able to keep pressure tracking. At higher power levels full voltage is applied and the system can continue tracking accurately. This pump is really impressive and has a unique characteristic that allows it to deliver such volume with the stock feed line. More info when I have time to compile the data. RC[/QUOTE

Richard,

What regulator did you use to make the DW400 work with the stock fuel system??

Thanks much,
Jerry

 

[ITSAV6]

when is the 2 step controller be ready?

 

[TurboBob]

We ended up using a PWM output from the ecuGN to control pump speed. It allowed using 100% stock lines and stock style regulator. We experimented with a 2-speed switching approach which worked also, but the PWM approach was more elegant.

Bob

 

[ITSAV6]

I have a stock ecm so the pwm ain't an option.