Fuel line upgrade question? Should the return line be BOMBED?

[ynot]

Cavity and line pressure comes from the restriction orifice in the first fitting at the pump. The smaller the hole, the higher the pressure. It also has an unloader in it for excessive pressure. The return line and fitting are the only thing on the fuel system you don't want to touch. Any mods = lower pressure. If the fuel system returned all the fuel it doesn't use (i. e. 130gph), you would run 0psi. . T

 

[Brandon]

no I think return line is alright as is, but you can go the s/s way because the return lines gotta be replaced once in a while anyway, This is the hard start problem, ask the 12v'ers, anyway, justuse all the fuel and you dont have to worry about return, he he he
B

------------------
END THE OPPRESSION FREE HVAC NOW
Danelle's Dodge

 

[Arcticat]

This may have been thought of or mentioned before, but if so I missed it. I was looking at the injection pump bypass valve and noticed that it uses the same banjo fitting as everywhere else. It is through this fitting that most of the fual returns to the tank. If I use an inline style lift pump that flows 140gph, that means at least 130gph has to go through that tiny restriction on the way back to the tank. Is it going to cause undue stress on the lift pump to have to force that much fuel through that tiny little hole? I am replacing the stock fuel supply lines with -8AN, but obviously I don't want to replace the whole stock return. Should I drill out the banjo fitting to increase flow like some people have done with the supply side banjo bolts?

I would think that this isn't an issue with the way Chads is set up since the regualtor he used has it's own return port. While it does just tee into the stock return, it doesn't have to flow through any necked-down fittings.