danalex

Considering getting Glacier's Big Line Kit, plus filtration.
Question: Does the stock line not provide enough fuel? or, will a bigger fuel line give any noticable performance difference, or simply make me feel better on the inside?

soulezoo

The last statement you made.

Filtration is a good thing though.

I make 900 hp on fuel alone on stock size lines. That should be all you need to know.

danalex

Thanks; kinda figured that.

So, humor me for a sec--what is the "theory" behind a bigger fuel line? Figure the injection pump is only going to take in a measured amount of fuel despite a larger fuel line...yes?

soulezoo

Fluid dynamics, not unlike electricity.

To obtain greater volume of fuel from the source, you have two choices:

1. increase pressure in the smaller line

2. increase the size of the line maintaining the lower pressure.

Yes, the cp3 is only going to be able to take a certain amount of fuel regardless. And it can handle a wide spectrum of input pressure (basically from zero to over 50 psi-- although neither extreme is recommended)

But when the cp3 is then modified to be able to take and deliver more fuel than stock, it gets to a point where the stock fuel pump cannot keep up. That is your first restriction, not the size of your fuel line.

danalex

"...when the cp3 is then modified to be able to take and deliver more fuel than stock, it gets to a point where the stock fuel pump cannot keep up. That is your first restriction, not the size of your fuel line. "

Hhmm....so, it sounds almost like adding a big line kit COULD be more harmful (to the cp3) than beneficial...