Dual pumps in AWD tank (one on each side??)

[turboglenn]

Well, I"im putting in the GSX tank tomorrow and have some issues with my fuel system.. first the FWD has one tank access and i put both my pumps parallel in tha hole.

But the GSX tank top/hangar is different and i will be building a new setup with my parts..

What i want to know is do most people put say one wally 255 on each ofthe threaded on caps on the AWD tank (one with each sender?)

Or does everyone put both pumps on the stock side right next to each other

I gotto thinking about this when i was trying to think about whatever the siphon tube mos is i need to do and what's the BEST way to do it (help apreciated)

But i thought with a wally on each side, going to a "Y" fitting out the side of the stock pump outlet wold this eliminate the need to have the tube, or would the extra length of tube (1.5 foot maybe) have any effect on how well the two pumps work together? ( i see no reason why it should with pressure controlled flow being the operative factor.

What should i do or what works best.. just to say i did it I want to put one pump on each side of the tank just to be different, but i dont' wantto put myself into any unseendrop in fuel flow and voiding starvation of the lines?

please help, i searched butmaybe not the right terms, i found 5 threads that were nothing about this

 

[bryanwheat]

I've done 2 walbro's on the stock 2g hanger before, but it is a tight fit. I ran 2 bulkhead fittings out the top because there wasn't enough room in there to y it off.

 

[mike96]

Me personally I would put both pumps on the same side of the tank, here is my reasoning.... The way the stock setup is built, the return fuel going back to the tank go to a device that siphons the fuel from the passengers side of the tank to the drivers side (from what I read of your post you already know this so this info is more for review...). If left as is you run the risk of accidentally running the fuel pump on the passengers side dry and risk burning up the pump when that side empties out. You could fix this by simply by adding a "Y" to the return line and connecting the fuel line to both sides of the tank that way return fuel will fill both sides at the same time instead of siphoning the passengers side dry, however.... From what I can remember there is no provisions inside the passengers side of the tank for a baffle. That means that the lower the fuel level is under hard acceleration on turning there is the possibility that the fuel on the passengers side of the tank will move away from the pump and you will start sucking air.

Thats just my $.02

 

[turboglenn]

anyone got pics of 2 pumps in one side of 2g AWD tank without killing the sending unit?

also, I"m not going to be using the OEM return line so the siphon will not be working (the stock size one keeps my fuel pressure from being able to go below 65psi

what if i ran the return into both sides or driver side only and put the pump to the siphon tube and the other pump in the OEM location?

 

[deth2u]

I have them out right now and I'm on the same boat as you, glenn. I was considering dual pumps, but the return on the other compartment is making complications

Hang on, I'll get some picures

That new single turbine pump that came out this year might be a better idea than messing with a dual pump setup. I think it speced something like 300lph at high pressures

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[turboglenn]

Thanks for the pics, but after examining it tonight i can't imagine how that piece actually siphoned fuel from the other side. it's restricts the flow of return and pushes fuel over to the other side when you hook a pump up and just loop a line from the "outlet" to the "return" and have the "siphon tube" un-hooked, it's shooting gas out of that part in higher volume that what it's letting go into the baffled area of the tank

I'm going to leave it hooked up ONLY if my pressure can stay in check when drilled to 1/8th in. But i'm putting a pump in that other side, then i'm running -8 line from one valley to the other one and using SS braided linde, I'll loop it under the driveshaft and use metal to make it guarded, this will constantly balance both halves, but not too fast, some will say i'll rip it off and lose it and my gas but i am methodical enough to protect it well enough i think


Has anyone removed and inspected the "baffle"? Most baffling systems i've seen built in cells have thin slots or openings for gast to get in through in many places (like slits from top to bottom) and the main walls just block it from emptying it too fast, but this on (from looking at it while it's inthe tank) seems to be a solid body that relys on the return or sloshing to get gas in it. (please some one who's inspected one exaplin that one to me )

well, we'll surely see what happens come driving day.. maybe tomorrow evening if i'm lucky (will be on open DP probably though )