One way fuel valve
Discussion
OK, I have an unusual problem:
My Esprit has 2 fuel tanks either side and behind the driver and passenger, they are linked via drain (bottom) and breather (top) pipes for obvious reasons but the sender is in the left tank and the pump is in the right. This makes it fine and dandy for everyday driving but get on track, particularly clockwise tracks (they mostly are) and I eventually end up with fuel starvation. Even when there is plenty left it sloshes into the left tank, away from the pump.
So, been looking around and mostly there are one way valves which fully cut off the flow one way, as the name suggests. What I could do with is a partial one way valve, ie allows full flow one way but partially/mostly blocks flow the other. This would solve my starvation problem without stopping me from filling from either side.
Anyone have any suggestions?
Ta
My Esprit has 2 fuel tanks either side and behind the driver and passenger, they are linked via drain (bottom) and breather (top) pipes for obvious reasons but the sender is in the left tank and the pump is in the right. This makes it fine and dandy for everyday driving but get on track, particularly clockwise tracks (they mostly are) and I eventually end up with fuel starvation. Even when there is plenty left it sloshes into the left tank, away from the pump.
So, been looking around and mostly there are one way valves which fully cut off the flow one way, as the name suggests. What I could do with is a partial one way valve, ie allows full flow one way but partially/mostly blocks flow the other. This would solve my starvation problem without stopping me from filling from either side.
Anyone have any suggestions?
Ta
I wouldnt trust such a valve for that.
What you could do is the swirl pot as described, or install a pump in the dead side so it continually pumps fuel back over to the pump side and/or build some sort of swirl tank setup in that side of the tank.
Some OEM cars where the tank is divided, either by dual tanks or a hum over the trans tunnel type thing....run a mechanical syphon pump on the return line to assist drawing fuel from the dead side to the main side.
Although if you did opt for an electric pump, you might then wish to restrict the link between the two so it is easy for the main side to remain fuller than the other side. Although this could in turn make filling slower from the petrol station.
What you could do is the swirl pot as described, or install a pump in the dead side so it continually pumps fuel back over to the pump side and/or build some sort of swirl tank setup in that side of the tank.
Some OEM cars where the tank is divided, either by dual tanks or a hum over the trans tunnel type thing....run a mechanical syphon pump on the return line to assist drawing fuel from the dead side to the main side.
Although if you did opt for an electric pump, you might then wish to restrict the link between the two so it is easy for the main side to remain fuller than the other side. Although this could in turn make filling slower from the petrol station.
Just fit a large (say 1.5" diameter) "fill" pipe at the top, which will enable filling of both tanks from a single filler and then fit a small restrictor (say 3mm) into the bottom "balance" pipe at the bottom. That small restrictor stops bulk fuel movement from slosh, but allows fuel levels to balance during the slow consumption by the engine.
Assuming that you are open to altering your current setup and modifying your tanks; why not install a large diameter (40 mm) link pipe at, say, 3/4 of the way up the tank and then fit a one way valve on your link pipe at the bottom. That way, when you fill up, once you get to 3/4 it will fill both tanks and once you are driving, you will always be at least 3/4 full until both levels drop.
I hope this makes sense.
Joe.
I hope this makes sense.
Joe.
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