Is there a reason flexable hose should not be used for the in-tank modification?

 

As long as it's stainless & fairly rigid it would probly work

 

Easier to work with. As long as its fuel rated.

 

diesel rated rubber fuel line is only rated for fuel on the inside ..the outside will get soft and mushy and will most likely fall apart after some time...

 

What about diesel rated synthetic hose, not metal?

 

Empty out your quarter/penny/dime/nickle jar and just get the ITP kit.

 

not only does rubber rott and fall apart..like i said.. all hose are rated on the inside..not the out side...rubber also floats...

this is what you want..

Diesel Innovations Complete Pre-Pump fuel line kit

 

You know, when I did mine, I spent lots of time, doing a lot of research to find my own parts. I don't know what hose David uses in his kit, but I found a 30R9 rated hose from Goodyear that has a blue interior lining that works with biodiesel. I spent a good deal of time talking to a truck fleet supplier and ended up on the phone with an engineer at Baldwin. Turns out I bought the exact same filter shown in the kit you linked to. The rest of my parts look to be the same too.

The only thing I have to add to Ron's earlier comments about using a flex line for the return (we won't even get into using it on the suction side) is it can also float or bounce up and interfere with the sending unit (needle for the fuel gauge). I'd hate to think I had a half tank of fuel as my truck ran out because the float was stuck.

 

should work fine for the feed line...but not inside the tank...i guess i miss read his post...or did I ??

 

I took it as the return line inside the tank. The one we extend to get away from the pick up assembly.

 

I am looking at both infeed to engine and return to tank.
In eliminating the mixer, only a short piece of hose from foot to metal line and clamped at each end. For the return, a length to stay far enough away from the infeed. Floating might be an issue.

Like this Welcome to guzzle's In-tank Hutch Mod Web Page except use hose in place of metal in #10 and #13 (The hose will not have this shape).

I am planning a modification soon. I want this to be as simple as possible with long term in mind. I intend to be the only owner this truck will ever have (unless it is inherited).

 

If flexable synthetic hose is a bad choice here, what about brake line that is sold at Autozone, Advance Auto, etc... It is available in a variety of lengths as short as 12" . I already utilize them in with my fuel heaters.

 

In stock configuration there is a rubber fuel line with a 90 degree elbow. When you do the in-tank mods you will see it. I believe it was part of the mixing chamber plumbing. If it weren't meant to be immersed in diesel it wouldn't be there. I used the rubber elbow to run a stainless steel brake line toward front of tank as the fuel return. I didn't need all of the length on one end of the elbow so I cut it off and slipped it over the loose end of the return line to insulate it from the bottom of tank. The reason I ran the return toward the front was that it would not tend to swing from side to side as much through turns as it would if extended toward the rear. Judging from perodically looking at the clear Baldwin pre-pump filter there is no air intrusion so it must be holding up so far.

 

If you can find it, 30R10 hose is rated for submersion in fuel. 30R9 is only rated for fuel transportation due to its interior lining being restive to the corrosive nature of fuel but the exterior is only manufactured to withstand chaffing, heat and the normal elements.

 

Good info Bob. That elbow found in the tank must be 30R10 or equivalent.