So a year ago I tried converting my tank to a 2-pump configuration with a second pump on the drivers side, but it didn't work well for several reasons. First, it was hard to keep the sender both sealed and insulated and it wanted to leak gas. Worse, it did work really well to the point that the driver's side would transfer all the fuel to the pax side and the pump would fail after running dry.
So, I engineered my current solution which I have now tested for several events and I can say it works!
The goal was not to have extra plumbing with a swirl pot or additional fuel pumps as points of failure. This project involved cutting the tank open, adding baffles and a trap door, and sealing it back up. Pressure tested, naturally. In my testing fuel is kept at the pump down to 1 gallon with 1G left and right turns. I've run it on track well below the fuel low light on several occasions now without issue.
The only downsides I've encountered is that the fuel level will read slightly high during hard maneuvering as the fuel is concentrated in the pump section (but during straight and level driving there's a bleed passage that equalizes everything and it reads normal). Second, the tank takes a bit longer to fill. It won't fill at full pump volume without triggering the auto-shutoff. I think making the baffles about an inch lower would totally solve that, or I might have a venting issue. I don't completely understand it yet because the vertical baffle isn't any higher than the saddle, and that doesn't limit fueling flow..
So, I engineered my current solution which I have now tested for several events and I can say it works!
The goal was not to have extra plumbing with a swirl pot or additional fuel pumps as points of failure. This project involved cutting the tank open, adding baffles and a trap door, and sealing it back up. Pressure tested, naturally. In my testing fuel is kept at the pump down to 1 gallon with 1G left and right turns. I've run it on track well below the fuel low light on several occasions now without issue.
The only downsides I've encountered is that the fuel level will read slightly high during hard maneuvering as the fuel is concentrated in the pump section (but during straight and level driving there's a bleed passage that equalizes everything and it reads normal). Second, the tank takes a bit longer to fill. It won't fill at full pump volume without triggering the auto-shutoff. I think making the baffles about an inch lower would totally solve that, or I might have a venting issue. I don't completely understand it yet because the vertical baffle isn't any higher than the saddle, and that doesn't limit fueling flow..
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