Fuel tank dilemma
5-7-Alaskavan
Willies post on GEBE'S website is a little confusing...first he says he DOES'NT have to pour fuel into the stock tank..then he says the AUXILARY tank stays full till the stock tank emptys?? So me thinks if the second part is true then you would still have to fill the stock tank...doesn't make sense to me. I want to use something tried and true. No way to reach Willie of course so....??
Wille from California:
Using my engine as often as I do, I realized that I needed more fuel. In fact, the Subaru Robin's tank was designed poorly! It can only be filled halfway. So, I started tinkering with the fuel intake and return lines. I noticed that motor pulls fuel up against gravity. So I went to REI and bought a red MSR fuel tank like the ones that other people have in their reviews. At a small engine repair shop I bought a few feet of fuel line and stared messing around.
After it was all said and done, I figured out a way to have the two tanks run simultaneously. I don't have to pour fuel into the stock tank, or flip a switch to access the auxiliary tank, it just runs on the natural pressure from the engine.
I ran a deep line into the auxiliary tank that led to the engine's intake line. Then I ran a second, shallow, line from the aux tank deep into the stock tank. From the stock tank I ran a shallow line back to the engine's return line. If the auxiliary tank is air tight, it should drawl the fuel out of the stock tank. Since there is an air intake valve on the stock tank's cap, the engine will drain the aux tank forming a vacuum which pulls the fuel out of the stock tank. This will keep the aux tank full until the stock tank empties. Then the aux tank will drain as well.
what many of you have been looking for:
