Return Fuel System Noob Question

[massacre]

Here's another option that worked for me on several setups up to 500rwhp with stock supply and return sized lines (5/16). I'd imagine that with an upgraded fuel pressure regulator and a -8 feed line it might work for your goals as well.

KB makes that adapter piece for certain year GTs, but it works great on the 99-04 Cobra rails. Provided there is enough room on the marauder, it's something to consider. Yes, it adapts a standard Ford style regulator to returnless style rail.

I have pics of your setup from years and years ago, I never knew who made that piece. Thanks for sharing that KB makes it!

[Jeronimojc]

Here's another option that worked for me on several setups up to 500rwhp with stock supply and return sized lines (5/16). I'd imagine that with an upgraded fuel pressure regulator and a -8 feed line it might work for your goals as well.



KB makes that adapter piece for certain year GTs, but it works great on the 99-04 Cobra rails. Provided there is enough room on the marauder, it's something to consider. Yes, it adapts a standard Ford style regulator to returnless style rail.

Certainly a good suggestion. I called KB. They said their adaptor is for stock size fuel regulators only.

I may give the "dead head" return system a try. I can always change it down the road. Thanks everyone for their input.


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[massacre]

^^^ Definitely let us know how this works out for you, it might save me some plumbing some day! lol

[chief455]

I would rather my regulator make fuel pressure adjustments after the fuel injectors are consuming fuel, not before it.

that is a key to high volume fuel demands. regulate after the engine is fed.
feed the engine, set and monitor pressure after injectors, when set pressure is reached, the regulator opens the return line to relieve/maintain.

[Jeronimojc]

For whatever is worth. I spoke with Aeromotive (see post #3). They indicated in the setup they illustrate ("dead head") the pressure in the feed line upstream of the regulator is the 'same' as the pressure downstream of the regulator. The key is rather sufficient pump flow. I would say 'same' is relative considering a dynamic system. They also indicated 600 hp should be no problem with that setup and stock rails. We'll see. Stay tuned.


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[massacre]

that is a key to high volume fuel demands. regulate after the engine is fed.
feed the engine, set and monitor pressure after injectors, when set pressure is reached, the regulator opens the return line to relieve/maintain.

This is how I prefer to run my regulators ^^^
But everyone is different, no shame in that

[justbob]

There has been STUPID H.P. made with deadhead systems. Like I said before, the ones I've read up on were done for heated fuel reasons, something I am all too familiar with... By placing the regulator in a place that gets decent air flow and not returning fuel through hot ass rails, and across a hot engine, it's that much less heated the fuel gets and how much more run time you have on a hot day before your fuel pump overheats and fails.

This is probably what I will be plumbing up on mine even though I have custom made rails originally off Triple Threats car.

I haven't chosen a pump(s) yet. I was hooked on running a external for the cool plumbing look out back but the more I think about it, simplistic is best in the long haul.


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Buy it, Break it, Build it BETTER.
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[mad1stgen]

Certainly a good suggestion. I called KB. They said their adaptor is for stock size fuel regulators only. ...

You can always run one of these with that adapter.

http://www.summitracing.com/parts/ae...FQQSMwodbxMAFQ

[Jeronimojc]

I simply modified a B-head OEM return-style fuel rail to fit the C head intake by cutting off the B head tabs and welding them in the proper locations. Then I had them chromed.



I do want to try an aftermarket FPR so I might have some neat fuel rails for sale!

Very nice!! Maybe you can keep your good looking rails if you do as mad1steng pointed out below. The KB adaptor is $65. The inlets and outlets are -6 AN though.

EDIT: Actually, you wouldn't even need the adaptor. Correct?

You can always run one of these with that adapter.

[massacre]

Correct, even better news I wouldn't need the adapter!

[mad1stgen]

Yet another option if you guys want to run a stand alone regulator with a -8 line between the rail and the regulator ... http://www.foreinnovations.com/product_p/22-904.htm

[massacre]

Fore makes great stuff, I know a dude who used to design stuff for them.

[Jeronimojc]

Yet another option if you guys want to run a stand alone regulator with a -8 line between the rail and the regulator ... http://www.foreinnovations.com/product_p/22-904.htm

Nice find. It looks like it mounts to a stock fuel rail. There are probably many different possible configurations. These two come to mind, but someone else should confirm. I like the one on the right (less rail mods). Will need to cap fuel rail stock feed tube. What do I know.




ImageUploadedByTapatalk1417031029.823038.jpg


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[MOTOWN]

Motown, I appreciate your advice. Please don't take offense to this; I get what you are saying, but I am the type of person that likes to understand how things work.

My question is is there a major flaw in setting up a return system the way I sketched it up and if so, where is the flaw?

I know it isn't ideal considering the small stock fuel rails; I know it isn't customary; I know no racer would be doing something like this... I am simply inquiring about the logic.

Thanks!


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A little late to the party with my response check out this link scroll down to figure 1-2 is exactly how my fuel system is plumbed and the best way to do it.
http://aeromotiveinc.com/wp-content/...3101-09-14.pdf