Fuel sump or 5/8 pickup?

2000wa250 · Jan 1, 2013

Going to be going with a Sump when I can afford it. Makes a lot more sense to me. Not to mention theres the heat issue, which I am sure is minimal, but if you are returning hot diesel to the top of the tank, and drawing fuel from the bottom, you should be getting cooler fuel towards the engine.

Homesteader · Jan 1, 2013

02BigD said:
Make certain the bottom of the straw, is the correct distance from the bottom of the tank. It's a tight balance, between ensuring the straw isn't so low it starves the motor, and not so high off the bottom, that 1/4 tank of fuel is the new "empty".

So what is the sweet spot measurement ?

Arisley · Jan 1, 2013

Use the factory foot.

Diezel Dawg · Jan 1, 2013

02BigD said:
Make certain the bottom of the straw, is the correct distance from the bottom of the tank. It's a tight balance, between ensuring the straw isn't so low it starves the motor, and not so high off the bottom, that 1/4 tank of fuel is the new "empty".

Sump and you don't have to worry about any of that

Sent from my PG86100 using Tapatalk 2

Homesteader · Jan 1, 2013

Sump looks to be the direction I'm going

neverkickn · Jan 1, 2013

If you need tools for hard tube I have a rigid flaring tool and a bender. The swagelok place here in Sherwood has 035 wall stainless for cheap. Auto Sports Center in NLR should have all the flare firrings you need if you are going with the Aeroquip braided fuel hose.

TyCorr · Jan 1, 2013

I put a 5/8 straw in my tank from BigJake and i held it up about 1/2" from the bottom of the tank. I still have the foot but im not planning on using it.

02BigD · Jan 1, 2013

Homesteader said:
So what is the sweet spot measurement ?

Dunno, I have a sump(s).

Wayne · Jan 1, 2013

the sweet spot measurement for our fuel system kits is 1/4" shorter than the tip of a fully relaxed stock pickup configuration. we never have 1/4 tank issues, and never have pulled the bottom against the pickup tube.

TyCorr · Jan 1, 2013

Wayne said:
the sweet spot measurement for our fuel system kits is 1/4" shorter than the tip of a fully relaxed stock pickup configuration. we never have 1/4 tank issues, and never have pulled the bottom against the pickup tube.

So, with that in mind, the foot isnt necessary? I retained mine but didnt plan to use it anymore.

Powersmokin32 · Jan 1, 2013

Been looking at sumps today, and I am going to order Beans Sump tommorow. Price is average with everyone else, and has the added drain port. Just can't decide if i want to go ahead and drop the tank or not.

02BigD · Jan 1, 2013

If you haven't done the Harpoon mod, I would suggest dropping it. With a sump, on my ccsb, can comfortably let it run low enough to put 31 gallons in it. Dropped the tank a second time to adjust the fuel gauge to reflect the added capacity.

TyCorr · Jan 1, 2013

02BigD said:
If you haven't done the Harpoon mod, I would suggest dropping it. With a sump, on my ccsb, can comfortably let it run low enough to put 31 gallons in it. Dropped the tank a second time to adjust the fuel gauge to reflect the added capacity.

Resistor? Or adjust the float?

Edit:Godd€¥nit, you guys now im gonna "look into" a sump. Just bought bellowed uppies today. Tanya is gonna kill me if I dont.get this truck.back together with all the dough Im spending. She has been a saint thus far.

neverkickn · Jan 1, 2013

May be easier to drop the tank since your truck is lifted if you want to harpoon it. Or if you have a lift or a few guys around, you could always pull the bed.

02BigD · Jan 1, 2013

TyCorr said:
Resistor? Or adjust the float?

Adjusted the float.

Powersmokin32 · Jan 1, 2013

I'll probably just drop the tank and harpoon it, install the sump, and clean out the tank. Truck is right at 300,000 miles so can't hurt to clean the tank.

Wayne · Jan 1, 2013

TyCorr said:
So, with that in mind, the foot isnt necessary? I retained mine but didnt plan to use it anymore.

The foot doesn't flow as much as a 5/8" ID pipe, so no way.

Powersmokin32 said:
Been looking at sumps today, and I am going to order Beans Sump tommorow. Price is average with everyone else, and has the added drain port. Just can't decide if i want to go ahead and drop the tank or not.

Let me know when that's done, and you're in town. I could sure use some free fuel with easy access.:thumbsup:

Powersmokin32 · Jan 2, 2013

Wayne said:
The foot doesn't flow as much as a 5/8" ID pipe, so no way.

Let me know when that's done, and you're in town. I could sure use some free fuel with easy access.:thumbsup:

I highly doubt I ever drain the tank another day. Just saying, like in the event I possibly get bad diesel and I'm forced to drain it.

TyCorr · Jan 2, 2013

Powersmokin32 said:
I'll probably just drop the tank and harpoon it, install the sump, and clean out the tank. Truck is right at 300,000 miles so can't hurt to clean the tank.

Im not trying to dissuade you from dropping and cleaning your tank. I want to share my experience. I removed my bed to install all my in-tank mods. I opted to use the 5/8 pickup tube. I removed the float and pickup assembly and there was grass, no shti, in the screen on the pickup foot, it was still green too. But there was nothing else in the tank. :shrug: Tank was spotless at 265kmiles but I wanna know how the grass got in it. Ironically when I rebuilt my fuel bowl in 2010 there was so much dirt in it that the drain was.clogged shut. I had to.chisel the dirt out

But.hey the tank is gleaming white on the inside

CSIPSD · Jan 2, 2013

I just cant bring myself to cut the bottom of my tank. IMHO there is not one damn thing wrong with a 5/8" pick up.

Plus with the way I have my transfer tank set up I am afraid the extra weight and pressure of a constantly FULL fuel tank may cause leak issues.