My Duralift is rail mounted, only 2' or less from the fwd tank... no issues to date, used as a daily driver.
One of those pre-filters may help settle down the tank vortex, although I have my doubts about the siphon/feed issue because the pick up is at the bottom of the tank. I can see an air suction problem around empty.... but then again, not really, until the fuel is gone. All you have to do is look at the inherent pick up tube design restriction.
In order for the siphon effect to really have an affect, the pump would have to be mounted so low from the fuel source, that the weight of the fuel held open the spring on the check ball....in an eccentric pump. Once the filter housing was full, along with the rest of the fuel lines, siphon could not even occur due to the dead heading of fuel in a closed circuit.
I can't help but wonder what else caused the pump to act up, or if it was mounted so low from the tank, that the fuels weight kept it open?? But then again, not too many tanks mounted above far enough to matter.
In boats, we have check valves in many tanks to prevent reverse siphoning, that is to keep primed fuel in the primed condition, not siphoning "back" into the tank.
We use Carters all the time in both diesel and gasser applications. They usually work good, even in a rust environment. Of course, protecting connections, priming and painting the all metal pump gives it more longevity.... and yes, the dual black wires are annoying. I considered the Carter on my own rail until one of my customers off loaded his boat and basically gave me an in-box Duralift...$25.00!
I guess we'll see how long the Carters will last in a more dense environment. It will be interesting to see the results.
