[QUOTE=cfi_luz]I was just wondering why you only went with a -6AN feed line. After going to all the effort that is hardly an upgrade over stock. I'd think you would want to run -6 lines from each pump the filter then at least a -8 line from the filter to the rails. QUOTE]


The -6 line is good enough for us right now, 812 at the tires with a dead flat 11.5 Af speaks for itself. However I know guys are trying to make more than 800 so a -8 might work then. The -6 adds 30% more fuel to the motor so its not hardly an upgrade it is an upgrade. Say a truck makes 620 HP and it runs out of line to support the fuel needed. That means with the -6 line he would be able to support at least 186 more HP.

JimIII

 

Cfi_luz, you incorrect about the coils not going in or out with aftermarket rails. I mounted my CPR rails and had the coil in and out with no problem before the motor went into the truck.

 

[QUOTE=JimIII@jdm]Actually when I did the -06 line on my truck...I had a chance to pin (measure) the stock fuel line in several places and the smallest diameter I saw was at the coupling from the fuel pump hanger and if I remember right it measured around .176 diameter (ID) The -06 hose has a nominal ID of .340 so it is almost double the diameter of the stocker and that would give it 4 times the flow area.
So you are right... it is a very size-able upgrade.
Dale

 

the kit being so expensive reminds me of Gregg Evans famous quote. ''Hell, JDM gets $60 for a $13 line mod valve.''

 

I disagree with needing to chnage the fuel system. 255s intank and a upgraded fuel filter is all you need for 800rwhp. I have seen it 1st hand

 

sweet kit guys

not a bad price either, it doesnt come with the fuel rail and regulator too does it?

 

Well the stock system will support up to 800 but not safley, if you want a one hit wonder truck, not one that makes the power over and over without failure then dont upgrade the lines. Our kit does not come with fuel rails but we suggest our fuel rail kit, no need for an adjustable regulator. The fuel rail upgrade is $239.

JimIII

 

What are the rails like? Aftermarket log style, or modified factory rails?

 

If you change out the filter system it will handle it. That is where the restriction is at mostly. More than a one hit wonder after that. I also can't see the use of upgrading the lines if you are not including the rails for a better system

 

We always suggest fuel rails after about 550-600 HP....We use the 97 F150 fuel rails and regulator on all of our big power trucks. Vinnies truck making 700+ at the tire had this exact combo. The JDM Fuel system, 255 pumps, 60# injectors, 97 rails and BA2400. The meter pegged just at about 6K and the fuel system still had fuel! This was at 708 RWHP to the tire probably near 800 to the engine no nitrous


JimIII

 

Aight; what's so special about the "97" rails/regulator? If you arn't going to an aftermarket adjustable regulator then why switch rails? The injector holes are the same size the fuel inlet size/pipe is the same, and the outlet is the same. The rails are the same size pipes.

Should be interesting to hear the reason

 

I seen JLP's truck at Norwalk and noticed he had the new style F150 fuel rails they are 2 X the dia. of the old style and a returnless.

God Bless,

Suavy

 

After watching all the local people having problems with returnless fuel systems there is no way in hell I would want to switch.

But; that is interesting hearing about what he's trying out. Was he still using the LS1 style coils?

 

I don't know I just looked at his fuel system cuz the fuel rail is the same one we put on in my plant.

Peace,

Suavy

 

Suavy what fuel rail are you usin getting ready to put uilt motor in and up grade fuel system ,already have 60lbs and 255s in guess lines and fuel filter and rails are next..thanks for any help O do you have the spacer mod on ur truck the 1 that goes under the sc?
Thks again Bob