Engine/Transmission (1998.5 - 2002) Hard Line or Rubber Line?

[jrandol]

Going to make my own fuel setup and need an answer from those have done it or bought one.



From the Fuel Filter (stock fuel filter) to the VP 44, can I use Fuel Rated Rubber line or do i need to do something different like Steel braided or Hard Line?



Second Question for those metallurgists, I have a 105 aux tank in the bed I am going to put a pump on that fills into my stock tank, I need some sort of a pickup that goes into the tank. What kind of line can I buy that will safely pull fuel and wont have to worry about rust or possible vibration killin it and droping inside of the tank?



Thanks in advance for everyones advice!



Jeff

 

[EricBu12]

See my setup On another post. Search "My fuel setup finally done"

I use the Fuel rubber hose from autozone, no problems...

As for the Pickup tube I'd say either aluminum or stainless. PLastic elbow for the pickup screen.



When you do a pump for the tank, also wire in a Solenoid shut-off for the line, just in case it tries to siphon the rest when it has a head runnin. ... . you shut off the pump and it keeps on pouring... . not good.



In the post you will search for, I now have 12-14 psi no matter what, Idle to WOT. ------ Not bad

 

[csevers]

I just did a Big line kit

From Wildcat Diesel, it has the -8 lines witch are steel braided they look nice but are stiff to work with and fitting are also big for small holes they are going in but it works not a bad set up. I had thought about doing my own rubber line kit but the rubber can pules and eventually stress the hose till cracks this may not be so with the 24v but the lift pump of the 12v does pulse a lot.



Craig

 

[Ncostello]

Just too keep things simple, inexpensive, yet effective I went with Weatherhead SAE 30R7 rated hose (H057 Fuel Line). After looking at many different brands, the Weatherhead is better in my opinion. Its diesel rated with a working pressure of 50psi, burst pressure of 250psi, and vacuum rated to 24" mercury. I put a section on a vacuum pump up to 30" and couldn't see any deformity at all. In fact it was just as hard to squeeze shut with or without vacuum.



Cummins used a short section of rubber fuel line between the VP and filter canister to connect the hard lines. Its markings said "5/16 Fuel Injection Hose J30R9". This hose is basically stronger J30R7 that can withstand higher working pressures up to 125psi and burst of 900 psi. Its designed mainly for cars using todays unleaded fuels (with additives) whose fuel pumps can easily reach 60-70 psi. Alot more expensive than J30R7 too. With Carter lift pumps, we Cummins owners are lucky to see 16 psi constantly on a single pump system.



Aeroquip has never tested the braided or socketless AQP against J30R7 and said they are coming out with a new hose in the future that is designed for this specification. Whether or not this means current AQP hose is suitable for diesel I dont know. It seems to work. Gates Hose however told me that their equivalent to Aeroquip Socketless is not recommended for diesel fuel systems. Plus the price was too high for what I really wanted to do.



Most autoparts places carry J30R7. I also used Oetiker stainless stepless crimp clamps. They are pretty slick. Those are the ones Cummins uses to clamp the turbo wastegate hose. They provide a nice tight, non-damaging seal. To remove, cut the ear with snips and just put a new one on later.



This is just a research based opinion as I am not a professional diesel expert.

 

[15w40]

Good info about the rubber fuel lines, Ncostello. I am currently running a test on the Aeroquip socketless hose by soaking a small piece in diesel. I am measuring the hose wall thickness using a micrometer with a friction thimble to tighten it down. The hose wall measured 0. 154” when I started. Eight days later the wall thickness increased by . 016” and 14 days later the wall is now . 036” thicker that the starting number. (I know, I am one sick individual. ) This tells me the hose is soaking up the diesel fuel and expanding. I will bet that over a period of years the hose will soften enough to collapse with vacuum. Who knows what some of the diesel fuel additives will do to speed up the process. This hose has a fabric layer between the inner and outer rubber layers. I am not worried about the hose blowing out with the low pressure or our lift pumps, but I am thinking using clamps on the socketless fittings may be a good idea.

 

[Ncostello]

The local hydraulic shop told me clamps can actually weaken the connection between the Socketless hose and the fitting. They sell Aeroquip stuff. They said the shape of the barbs on the fittings can damage the hose liner when clamped and cause it to become significantly weaker.



One note on soaking the hose... . most hose covers, depending on their material, will not tolerate diesel or gasoline. The inner liner could in fact be fine with the fuel while the outer covering will not. If your soaking the entire hose, try to see if its the liner or the covering that is expanding or absorbing diesel. Just a thought.



I am experimenting using Socketless fittings (steel) and milling off the inner barb and reshaping the outer barb. (Steel ones have two barbs while the alum ones have three). This would essentially make for a plain fuel hose barb on one end and AN on the other. I have not been able to fing any AN fittings that accept plain ole' clampable fuel hose so I decided to try and make one.

 

[K_Arts]

Originally posted by jrandol

Second Question for those metallurgists, I have a 105 aux tank in the bed I am going to put a pump on that fills into my stock tank, I need some sort of a pickup that goes into the tank. What kind of line can I buy that will safely pull fuel and wont have to worry about rust or possible vibration killin it and droping inside of the tank?

Jeff, I wasn't aware that you got a larger tank. So this means that you will be at my house once a week on the way home from work to fill both mine and the wifes truck up with fuel at no charge right?? LOL

 

[jrandol]

Re: Re: Hard Line or Rubber Line?

Originally posted by K_Arts

Jeff, I wasn't aware that you got a larger tank. So this means that you will be at my house once a week on the way home from work to fill both mine and the wifes truck up with fuel at no charge right?? LOL

Ah, yeah, sure



This tank should allow me to go about 2 1/2 weeks without fueling up. That will be really nice, tired of filling up every 3rd or 4th day.



Jeff

 

[Sticks]

Re: Re: Re: Hard Line or Rubber Line?

Originally posted by jrandol

This tank should allow me to go about 2 1/2 weeks without fueling up. That will be really nice, tired of filling up every 3rd or 4th day.



Jeff

WHINER!!

 

[jrandol]

Re: Re: Re: Re: Hard Line or Rubber Line?

Originally posted by sticks

WHINER!!

You got it!!