do I actually need a check valve to keep fuel from flowing backward thru the pump that goes dry ? or can I just use a Y fitting and the pump itself will be the checkvalve ?

 

Lots of suggestions above but to answer your original question. I have run 2 of those pumps in parallel with and without check valves. They have a check valve in them but it does not hold very well. If you want to see for yourself put a fuel preasure guage in the preasure side and let the pump run for a minute then turn it off and watch the preasure drop. It will probly drop slowly and it is probly not leaking thru the preasure regulator. I run check valves on the outlet side of both pumps and it always has 58psi in the system no mater how long it sits.

So to answer your question yes it will work the way you are thinking about it. I would recomend getting 2 -6 check valves for the outlet of both pumps just to make sure. they are cheap small and easy.

But consider this, those pumps HATE to run dry it only takes a few minutes to frag one from running dry. I recomend a sump or the Walbro pickups which both work well.

Wayne

 

Don't want to use the walbro snowmobile pickups?

 

I want to use the best system possible. I don't know anything about walbro snowmobile pickups.

ideally I would like a pick up in each corner

 

dang check valves are $77 each

hoping somebody has tried it with out the check valve and the pump that goes dry will keep the fuel from flowing backwards

http://store.summitracing.com/egnsearch.asp?N=700+4294733687+4294923409+115+4294840854

.

 

I've got the Walbro pickups in three different vehicles. Never had a problem loosing fuel pressure on any of them.
http://apeusa.com/html/pickups.html

 

camo the walbro pickups are the shizz.... I've got two that are weighted and swing with the fuel, one at each side of the tank. Can run on my side on less than a gallon of fuel.

 

so would one in each corner of the tank and feeding my one pump be the hot ticket ?

I sort of like the 2 pump idea just for redundancy as I plan on pre running the baja 1000 in my rig and having a "spare" seems like a good idea.

maybe I will do 2 pumps and 4 pickups. ????

 

from that site

" Note:
If the fuel pickups are completely dry, the pump will suck air. The pickups won't close unless they have been initially immersed in fuel [the mesh is wet]."

does that mean bone dry or not partially submerged ?

what I am getting at does it work if you have a partial tank of fuel and the tank is on a steep angle for extended periods of time ? or do they work best for just trashing around where the fuel is sloshing around and a gulp of air is introduced ?

 

The only way they could go totally dry is if they sat for a long time with no fuel. If you fill the tank and drive they will be wet enough to close. I have in fact done this, with 3 pickups I completely drained my cell and had no clue I was even getting low on gas till it ran out. This occured over the course of 3 days on one of our trails. I have my pickups placed in the sump and the two forward corners of the fuel cell.

 

They will suck air if they have not been in fuel or if your tank is out of fuel for an extended time. They would have to be out of fuel long enough to for the screen to dry.

 

they sound like the hot ticket. thanks

 

why is 4 unnecessary ? I am thinking one in each corner ?

should be noted I intend to run the foam in my cell so the pickup will not be able to flop to the low side.

 

When I used those before going to an internal pump, I used two snowmobile pickups (with an RCI 2161 tank) and placed them diagonally from each other in each corner. I could suck the tank dry and never had an issue at any angle or fuel level. Two works great, three ideal, 4 is overkill.

but you are camo....go with 4.

 

man I am confused.

how is 3 ideal ?

where would you place them ?


if they were placed
passenger front
driver front
passenger rear

then if I was low on fuel and off camber with the passenger side high going up hill I wouldn't have a pickup in the fuel

 

man I am confused... where would you place them ?
if they were placed passenger front, driver front, and passenger rear then if I was low on fuel and off camber with the passenger side high going up hill I wouldn't have a pickup in the fuel

Dude, I have seen you drive. :laughing:
For your application, I'd put one on every flat side of the fuel cell so that you can spin your wheels in ANY position. :flipoff2:

Randii

 

don't know what i am doing yet. trying to figure it out :laughing:

second pump might just be mounted as a spare and ready to have the lines switched over in case of failure.

 

a real moon buggy has to factor in zero gravity orbit :laughing: hey it could happen :flipoff2:

 

I'm running 4 of the AFE pickups in my rig (one in each corner) I'm also running an accell pump that purges air and returns it and a little fuel back to the tank. The system works very well. My first trip out I ran my cell completley dry, and aside from the rig not wanting to start on it's side the two times I flopped it (ran fine on it's side before I killed the engine) I had no idea it was that low. It would not start the following morning, so I opened the cell and could see NO fuel in it.

 

part# for the fuel pump?

 

Here is how mine is plumbed. Make sure you buy the submersible fuel line at the same time you buy the pickups. I had a hell of a time trying to find some here in Phoenix.

 

Sorry to bring up an old thread. I like this setup, it looks straight forward and I am about to have to do this. Do you guys plumb it with -6 AN and also how do you connect it to the internal supply line in these cells? Is the supply line not solid tube in these or is it just hose that you can splice into? Thanks for the info.

 

looks like the same cell I am running. thanks for the pics guys.

I think I will do 4 pickups and plump it as you did. Looks like you used push locks and Aeroquip AQP socketless hose ?
http://store.summitracing.com/partd...rtdetail.asp?autofilter=1&part=AER-FCV0620&N=700+400274+304193+115&autoview=sku

 

I ran 3 Walbro's in my ftoy. 1 front 2 in the rear. 3 years and now issues at any angles or any level of fuel.

Going to run 4 this time around.

 

I bought the hose from a now defunct race shop and it is not stamped, so I am not sure if it is the Aeroquip hose or not. They swore it was rated for submersion and that was all I cared about. I had wasted countless hours already, trying to find the submersion rated line in stock, locally. :shaking:

The -6 line is a little large to fit over the ends of the pick ups. I believe the pickups are 5/16" so I cinched them down with the hose clamps. It doesn't matter if they were to draw a little air, as they recommend you have at least one of the vented pickups installed in the system anyway. I believe it allows the pickups to reopen when they submerge again.

If I did it again, I would buy the correct size fuel line from APE and the fittings and call it good.

 

I didn't listen on the fuel submersible hose the first time. :shaking: It was amazing how perferated it was after a few years. It could have passed as a fish tank bubbler.

Napa sells one foot sections of the fuel submersible hose in 5/16" ID, but at $17 per foot section, it sounds like I should have looked into Aeroquip.



Is everyone running one with a bleeder? In five years I have never had a problem and none of mine have the bleed hole.

 

Camo i'm glad your started this thread ive been searching for the last month to see what other guys were doing about fuel starvation. I am running an rci cell with a top mount straw pickup and i;ve had the same problems. I was going to build a bottom sump pickup, but its close the driveshaft on full compression. This does seam to be a little bit easier way to go. I was going to cut the the top of the tank off to baffle the inside, but this is a hella lot easier. I'm convinced with this much good feedback.

 

I run 2 pickups... but my cells is 30x12x9 so its long and skinny. One in the front passanger corner and one in the rear driver corner.

-David

 

I've run a square RCI with sump before, and now a rectangular one with the top pickup and straw. Both of them I have drilled a hole on the side near the bottom and used a bulkhead fitting with a barb fitting on the inside. I used two pickups, one with bleed hole, in opposite corners of the tank, and have not had problems since.

 

This is what I did and it works well. I bought this fuel reservoir from fuel safe or someone, it has 3 check valve inlets and a pick up if you want to run a hose to it but I use an intank pump that sits in the reservoir.

 

I had this exact one from fuelsafe in a 12 gallon fuelsafe can...and I hated it. Normal rockcrawing trails I couldn't use more than approx 1/2 to 2/3 of a tank. Return line was plumbed into can also.

Switched to 4 ATL (same as walbro snowmobile) fuel pickups, one in each corner, after that It would could suck the fuel cell dry. Make sure you set up pickup hoses to flow enough to feed pump. I used -10 teed to -8 teed to -6 for the pickups. I used aeromotive pump, was feeding turnkey LS1.

 

Drew,

I like that idea as it just seems K.I.S.S. my question is what is the capacity of the reservoir ?

I suppose it could be made any size

thinking about this it seems like a good idea for extreme angles but not so good for running a whole steep trail like Jack Hammer with 1/4 of fuel.

 

Camo, if you don't want to over think it, redrill the pickup line with a bulkhead fiiting to the center front. With all the foam removed I trimmed the fuel line to the desired swingable legnth. Put a ATL prefilter vac head pickup. Were it hose clamped on I stacked a handfull of washers. It is a clunk. Covered on some old threads and been in my setup 22 gallon summit cell(jazz) for 2 years. In addition I have 2 e5000's plumbed in series to the same pickup line for backup. Been working great and as K.i.S.S. as it gets and cheapest as well.

http://www.pirate4x4.com/forum/showthread.php?t=546361&highlight=clunk