Has anyone upgraded their fuel system/pumps?

[FordFanStan]

This indirectly deals with the GT, although I have been searching and have yet to find out all the specs of the GT's fuel system and at what power levels or boost levels it needs to be upgraded.

I am having an aftermarket fuel pump assembly and top hat designed for the 2nd Generation Lightning. The designer has already completed this task for the 03-04 Mustang Cobra (Terminator), a very top quality piece, and is now ready to begin prototyping the Lightning assembly. For this to work, we need to decide on a certain fuel pump to be used. This is where the issue is.

After speaking to Walbro, they are hesitant to release any info on the GT pumps. What flow rate at what PSI and what kind of power levels they will handle. Even though the GT pumps are used in a returnless style system, the pumps have been confirmed per Walbro ok to use in a return style system.

So does any know the specs on the stock pumps, what kind of boost and power they can handle, when they need to be upgraded etc. What about the guys with the TT setup's, are they still on stock fuel systems?

Depending on the fuel assembly itself in the GT, this company may be able to design an aftermarket system for the GT.

Here is the piece they made for the Termi...

A stock fuel pump assembly modified for aftermarket lines:

The designers billet aftermarket fuel pump assembly:

Thank you very much in advance, Stan

 

[B O N Y]

One of our Arizona members has made changes, I would like to know more myself.
Shadowman, your thoughts?

 

[Mase]

our latest TT kit on stock motor made 1100 whp on completely stock fuel system.

It was pretty much maxed out on the upper rpms, and that was at around 24.5-25 psi.

Obviously it wouldnt be a good idea to run like this all the time. but 22-23 psi or 1050ish whp would be safe with this configuration.

Now please note, all setups are totally different. your max time available for injector pulsewidth depends on RPM. you use the most amount of fuel at peak Volumetric Efficiency.

With that being said, the dual pumps/ 2 injectors per cylinder setup is a stout fuel system from the factory.

if you have any further questions, feel free

Mase
Stage 6 Motorsports

 

[FordFanStan]

Thank you Mase and Bony,

The pumps are supposedly rated at a mild 225-230lph pump, but at what psi I wonder. Most of the other pumps are 255lph although can nowhere near handle that amount of power, although they are more often used in s/c applications in the Mustangs and Lightnings verusus turbo's. Thanks again... Stan

 

[Shadowman]

With regards to the idea of/or need to install fuel pumps that offer great volume; I see no reason or benefit for all but the most extreme of the gals; meaning those that are designed for and intended to be used with well over 1000 RWHP. As was mentioned there are several variables that come into play when considering the need for an upgraded system such load, boost, RPM, the projected time at a given RPM.

As was mentioned; the fuel system on these gal's is not only very good but also significantly under used when in OEM trim. Then as tweaks such as smaller pulley, the Whipple, and TT it comes closer to be operated at a level that most OEM's would have specified from the beginning. This is the case with most of the mechanical pieces on these gals; they are over built and under used which provided us the perfect platform to twist and tweak.

With the extreme FI gals that I create I also used multiple staged injectors; frankly it surprised me and made me smile when I saw that Ford had allowed their engine source to do the same. This process allows for a wonderful mix of OBDII aka closed loop fuel trimming as well and the ability flood the cylinders when the go pedal is pressed thus taking the gal out of OBDII aka closed loop and placing her in open loop during which time she is free to drink as much as she can.

So IMO would I consider alternate fuel pumps at or near the top of my must do list; no in fact I would likely have the thought of them so low that it quickly falls off my proverbial radar.

In closing; if you are twisting and tweaking your gal and the end game is a performance number under 1000 RWHP I would say that there are many other things that you can do with your $$; such as tires however if you are as is the case with Joe's TT where he pushed her into the stratosphere then I would consider alternate fuel pumps as a component of the total build sheet which would likely include; pistons, rods, crank, etc.

Quite simply; the idea of changing the fuel pumps reminded me of the discussion many months ago when alternate coils were being solicited to which I said why; the OEM coils are not breaking down even under the extreme applications furthermore the alternate coils that were be solicited provided no measurable gains. You would garner as much benefit from putting decals on your gal that make mention of the fuel pumps as you would if they were installed but the decals are easier to install and far less expensive.

Takes care

Shadowman

 

[fjpikul]

Here, here, Shadowman. Don't fix it if it isn't broken.

 

[FordFanStan]

Thank you for your opinion Shadowman.

I completely understand your theory, as well agreed, although my reasoning is to decipher if the GT fuel pumps outflow 255lph pumps that are used as an upgrade in the Lightning and Cobra communties. Thank you again, Stan

 

[Shadowman]

Thank you for your opinion Shadowman.

I completely understand your theory, as well agreed, although my reasoning is to decipher if the GT fuel pumps outflow 255lph pumps that are used as an upgrade in the Lightning and Cobra communties. Thank you again, Stan

Hi Stan

I read as much into your thread and only wanted to stop the wild goose chase for more or better.... when in fact for the majority of the GT community it would likely be little more than different.

As for your specific situation; I do not know however I would go directly to the VAR for the data or test the pump yourself because "FAR TOO MANY" performance resellers skew data or give only partial information as they create a market frenzy around a product that all too often times does not live up to solicitations hence expectations.

When it comes to comparing a fuel pump the stated flow rate means NADA to me unless I have the; at what voltage spread; the pumps ability to operate with a given line pressure, its projected operation time/life cycle, is there a thermal concern and he list goes on.

It is relatively easy to make a fuel pump and even more so to sell a pump with a stated flow rate if it is being tested akin to pissing on a flat rock; but then I suspect that you already know this.

On any given day folks (myself included) are looking for the "Holy Grail" of performance as such folks with anxiously walk blindly towards the light. I simply try to keep folks from becoming blinded as the result of the "hype" that came be and often is created based on little or nothing but "he said = good".

Thank you for your contributions to the Forum

All the best

Shadowman

 

[B O N Y]

Thanks SHADOWMAN, guess I will just buy Mrs. Bony something nice...
Any thoughts on ST JOHN (not the Baptist)

 

[Shadowman]

Thanks SHADOWMAN, guess I will just buy Mrs. Bony something nice...
Any thoughts on ST JOHN (not the Baptist)

You are welcome

Now as for your sweetie I suspect that she will appreciate it too.

Now as for St John's;

If clothing then this looks nice

http://www.neimanmarcus.com/store/c...t000009&ecid=NMFSGAPPst_john&_requestid=47356

If jewelery then the trip to and a hand picked item would be just the ticket

http://www.stjohnsjewelers.com

However is something sweet to drink I have not a clue

All the best Bony

Shadowman

 

[B O N Y]

Hey Bill!
Knits: St John
Bling: Harry Winston
Ask Mrs Shadow, she will lend a hand...
Our toys are nickels and dimes compared to theirs!
Cheers,
Daniel

 

[Shadowman]

Hey Bill!
Knits: St John
Bling: Harry Winston
Ask Mrs Shadow, she will lend a hand...
Our toys are nickels and dimes compared to theirs!
Cheers,
Daniel

Thank you and very true......

Shadowman