Part 2: Return Fuel system venturi siphon mod results!

[@krisjenkins4040]

Great vid! I have a question though. When you ran your straight fuel line from the ventri/fuel pump and to the bulkhead/out of the hat. What do you connect to the bulkhead that you routed the ventri fuel line out of?

[@lightblade543]

Would be your return line back to the tank on a regulated return fuel setup vice the factory returnless.

[@ProdigePerformance]

I’m using a dw400 fuel pump. I’ve read that higher flow pumps will require the gold orb. But I notice you were using the Walbro 450 with a green orb which is similar to the dw400 Would you recommend the green orb or gold for the DW400

[@lightblade543]

Yeah believe they reccomend gold for 700lph +. Green worked fine. They way I look at it is use green for single pump setup and use gold for dual pump. I have a dual 430lph 274 pump hat that I built and used gold on.

[@ProdigePerformance]

@@lightblade543 thank you for the reply and help clearing that up! I thought the gold orb would be for the dw400 but green it is!

[@LukeRainbird]

Happy days - that's quite an improvement! Did the syphon line seem to draw without any significant reduction after moving the syphon to the return side?

[@lightblade543]

Yeap works great even though the orifice is larger there is much more flow on the return side so the venturi functions as normal.