Upgraded fuel system....continued

[adamsredlines]

I stopped by Nitrous Daves today to talk to them about my fuel system....and I got a few questions...

Does the stock 5.7 fuel rail have a screw in type crossover?
Does anybody have any thoughts on the billet BBK fuel rails?

Can you go "too big" on the fuel lines? I assume I should go big enough for any future growth of fuel needs and it won't really matter now....I will just have enough left if I need it later.

This will probably be an evolving thread...so I am open to any thoughts/suggestions.

[Hemi345]

I stopped by Nitrous Daves today to talk to them about my fuel system....and I got a few questions...

Does the stock 5.7 fuel rail have a screw in type crossover?
Does anybody have any thoughts on the billet BBK fuel rails?

Can you go "too big" on the fuel lines? I assume I should go big enough for any future growth of fuel needs and it won't really matter now....I will just have enough left if I need it later.

This will probably be an evolving thread...so I am open to any thoughts/suggestions.

I dont think its a "screw in type" I tried to twist off the cross over on my 6.1 rails and it just spins around and around, I wanted to add a steel braided cross over.

[viperkota]

it has a type of heat fit. if you warm it up a little you might be able to pull it off...but it will just look like the fuel line piece.

[adamsredlines]

I'm trying to decide if its easy/worth modding the stock fuelrail....or just paying $225 for the billet BBK fuel rails that include a crossover....that's also interchangable.

[Darell]

I'm trying to decide if its easy/worth modding the stock fuelrail....or just paying $225 for the billet BBK fuel rails that include a crossover....that's also interchangable.

If you want to get serious, forget the crossover and use a Y-block to feed each side separately.

[adamsredlines]

Hmmmm, so two individual fuel rails with a splice on the fuel line feeding both? Interesting, didn't even think of that.

I gotta redo everything, so I am trying to do it once and do it right....with room to grow.

Nobody has thoughts on the BBK fuel rails?

[Darell]

Nobody has thoughts on the BBK fuel rails?

I'm sure they look pretty. The stock rails will work fine as long as they are fed properly. The 2nd picture shows my Y-block supplying both rails. (blurry)

http://dl.dropbox.com/u/156775/IMG_2510.jpg

http://dl.dropbox.com/u/156775/IMG_2511.jpg

[adamsredlines]

I'm not gonna lie, I have no idea what's going on there haha

First pic has a modified stock fuel rail set up for a return system I am assuming?

Not sure what's goin on in the second pic....

[dayton hemi]

T&B ty-raps $$$$$$$$$

[Darell]

T&B ty-raps $$$$$$$$$

I steal only the best from Electricians at work.

[dayton hemi]

I steal only the best from Electricians at work.

:Tup:

[viperkota]

I'm not gonna lie, I have no idea what's going on there haha

First pic has a modified stock fuel rail set up for a return system I am assuming?

Not sure what's goin on in the second pic....

look into the blurry just below the regulator...he has 2 y-blocks. looks like he has his fuel rails feeding from both ends...some say over kill...but it will make sure all cylinders have equal pressure/ fuel...though thats a bit of money right there.

[Darell]

look into the blurry just below the regulator...he has 2 y-blocks. looks like he has his fuel rails feeding from both ends...some say over kill...but it will make sure all cylinders have equal pressure/ fuel...though thats a bit of money right there.

The rails have -8 supply on one end and a -6 return on the other going back to the pressure regulator.

[viperkota]

The rails have -8 supply on one end and a -6 return on the other going back to the pressure regulator.

back to the regulator? havent seen that before...though i am still new to return fuel setups.

[Darell]

back to the regulator? havent seen that before...though i am still new to return fuel setups.

The regulator holds back pressure in the fuel lines. The excess fuel has a un-restricted trip back to the fuel tank.

[viperkota]

The regulator holds back pressure in the fuel lines. The excess fuel has a un-restricted trip back to the fuel tank.

that much i know. i have a setup kinda like yours. my setup has one line go to the fuel rails and the excess pressure from the regulator goes back to the fuel line just before the fuel filter...not an actual full return setup...that was for the 4.7...may need to change it for the 5.7.

[Hemi345]

DUDE you have a grand in red and blue connectors under there I just priced some out for my engine I was like WTF those are expensive, Nice work btw looks very NICE.

[dayton hemi]

DUDE you have a grand in red and blue connectors under there I just priced some out for my engine I was like WTF those are expensive, Nice work btw looks very NICE.

he only steals from the best electricians

[Darell]

DUDE you have a grand in red and blue connectors under there I just priced some out for my engine I was like WTF those are expensive, Nice work btw looks very NICE.

Not quite. The entire system including the Aeromotive regulator, Y-block and filter / lines cost me $700 CDN.

[adamsredlines]

Ok, do I have this straight?

Fuel pump>fuel line>regulator>y blocks>fuel rail>regulator?

[dayton hemi]

Ok, do I have this straight?

Fuel pump>fuel line>regulator>y blocks>fuel rail>regulator?

nope, just one regulator and a fuel off the return

[adamsredlines]

I meant back to regulator, or did I misunderstand what he said?

[Darell]

Fuel pump>supply line>Y-block>fuel rails>regulator>return line to tank

The regulator has 2 inlets and 1 outlet (plus 1/8" pressure port)

If the fuel system is too small then no fuel will leave the regulator at WOT and the return line will be empty.

[adamsredlines]

Alrighty, I gotcha...regulator goes after fuel rails.
Its been quite an educational day...and the more educational it is the more I see how far away from my goal I am lol.

[Hemidup]

There's a couple ways you can do it. Mines slightly different than Darell's. I have a -8 supply line from the pump to the regulator. A -8 return line from the regulator back to the fuel tank. Two -6 feed lines from the regulator, one going to each fuel rail and dead heads with no X over. I also used NHRA approved push lock fittings and line cause I hate working with braided stainless.

[viperkota]

There's a couple ways you can do it. Mines slightly different than Darell's. I have a -8 supply line from the pump to the regulator. A -8 return line from the regulator back to the fuel tank. Two -6 feed lines from the regulator, one going to each fuel rail and dead heads with no X over. I also used NHRA approved push lock fittings and line cause I hate working with braided stainless.

can you give more info on the push lock fittings...those look pretty clean....and im not big on the stainless look...though i have seen the black braided..but its expensive.

[Hemidup]

can you give more info on the push lock fittings...those look pretty clean....and im not big on the stainless look...though i have seen the black braided..but its expensive.

Eaton is the name brand of push lock fuel line that I used and its darn near the same price of braided stainless.

[adamsredlines]

Ok so the fuel pressure regulator simply bleeds excess fuel back to the tank while maintaining proper pressure at the fuel rail?

[SharaDon]

Ok so the fuel pressure regulator simply bleeds excess fuel back to the tank while maintaining proper pressure at the fuel rail?

Correct

[dirtydodgeon22s]

thought id do a little research beforehand in case stock pump cant support 12psi and 75 shot... good stuff guys but what about pump swaps?

[fulson4]

thanks I was gonna ask the same question saw where someone with an 04 swapped to an 06 fuel pump...

[dirtydodgeon22s]

BTW fulson4, i watched your idle vid and its nasty...

[otter1363]

I'm also redoing my fuel lines. I am not sure I understand the purpose or advantage of the regulator and return to the tank.

I was planning on using a adapter off the stock supply line (std 5/16 line to 3/8npt) into a Y block and running two -6 lines to some billet rails. My project is intended more for looks than to "fix" supply problems. I run stock injectors, mild cam and ported heads with spray. Obviously there are advantages to the systems I see posted here but need some help understanding the importance of them.

[SharaDon]

I'm also redoing my fuel lines. I am not sure I understand the purpose or advantage of the regulator and return to the tank.

I was planning on using a adapter off the stock supply line (std 5/16 line to 3/8npt) into a Y block and running two -6 lines to some billet rails. My project is intended more for looks than to "fix" supply problems. I run stock injectors, mild cam and ported heads with spray. Obviously there are advantages to the systems I see posted here but need some help understanding the importance of them.

The purpose of the regulator is to adjust pressure. For Jerry, he has 2 factory pumps in the tank and uses 66lb. We adjust pressure down from the factory 58 psi and have it boost referenced.(so it comes right back up under load)

Those with after market pumps, also need the adjustability to fine tune there fuel curve.

[otter1363]

OK - so with my mild set up and stock pump, I dont need to mess with regulator or returns. I assume there is no reason to replace the stock fuel line for supply in my case.

Thanks!!

[dirtydodgeon22s]

what are he pros and cons to upping fuel pressure via an external regulator? would it throw codes for the psi being to high? how and why would someone "boost reference" their fuel pressure? im knew to fuel systems but im trying to learn as much as possible in the event mine needs revamped...

[Darell]

what are he pros and cons to upping fuel pressure via an external regulator? would it throw codes for the psi being to high? how and why would someone "boost reference" their fuel pressure? im knew to fuel systems but im trying to learn as much as possible in the event mine needs revamped...

If an engine is under 10 psi of boost then that 10 psi is working against the factory 58 psi fuel pressure leaving the injectors. (leaving only 48 psi to spray) A boost referenced regulator will increase the fuel pressure the same amount the boost increases in order to maintain a flat injector flow curve. There are no sensor monitoring the fue pressure so no codes will come up. ie. With 58 #s of boost absolutely no fuel would leave the injectors without a referenced fuel regulator.

[dirtydodgeon22s]

o thats very interesting! i suppose that this kinda technology is only available with aftermarket fuel regulators and such?

[viperkota]

o thats very interesting! i suppose that this kinda technology is only available with aftermarket fuel regulators and such?

unless the vehicle comes with boost

[Darell]

o thats very interesting! i suppose that this kinda technology is only available with aftermarket fuel regulators and such?

Not really high-tech. It's just a diaphragm and a spring. Your factory fuel basket has the same device on it.

[Darell]

unless the vehicle comes with boost

Chev trucks all had an adjustable return style system only a few years ago. Parish had a stock fuel system in his 1000+ hp Silverado. (all lines, rails, and regulator)

[viperkota]

Chev trucks all had an adjustable return style system only a few years ago. Parish had a stock fuel system in his 1000+ hp Silverado. (all lines, rails, and regulator)

now he had a badass truck...(for a chevy)...did it make it to the nines....or did he ever to the twins or was it just sold off?

[Darell]

now he had a badass truck...(for a chevy)...did it make it to the nines....or did he ever to the twins or was it just sold off?

He reached 10.0x with the twins, then sold it. There are still videos of it around in Mexico with the roll-bar removed.

[viperkota]

He reached 10.0x with the twins, then sold it. There are still videos of it around in Mexico with the roll-bar removed.

mexico is a long way away form corn land....lol

[dodge3471]

A boost referenced regulator is a very good way to turn down the big injectors that are needed for big power at idle and cruising conditions. An ATI SC boat I worked on idled at 37 psi fuel pressure add added 5 psi of fuel pressure for every 1 psi of boost.If an engine is under 10 psi of boost then that 10 psi is working against the factory 58 psi fuel pressure leaving the injectors. (leaving only 48 psi to spray) A boost referenced regulator will increase the fuel pressure the same amount the boost increases in order to maintain a flat injector flow curve. There are no sensor monitoring the fue pressure so no codes will come up. ie. With 58 #s of boost absolutely no fuel would leave the injectors without a referenced fuel regulator.