How does my contraption look??

StrokerScamp said

Also, one VERY important point that I left out. Notice the BG diagram. In order for the fuel to go back to the tank through the return line, it must flow into the carb, then CHANGE direction, go back through the SAME way it came in and out the return line. That's a lot of turbulance. Routing the return line in the fashion I outlined allows the fuel to flow the SAME direction the entire route of the fuel system.

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I disagree here. The carb gets its fuel from the log. The regulator at the end of the fuel log bleeds off the pressure and keeps cooler fuel on the log. The lines from the log to the carb inlet is stagnet unless the needles are open to fill the bowls. The fuel doesn't "turn around" its fed to the carb and doesnt leave until it goes through the venturi. I gather from your drawing and explanation that "your mod" with the dominator bowls keeps fresh fuel in the bowls. It doesn't since all the cross over in a Dominator fuel bowl does is bypass the needle (when its shut) and cross over to the other side. Really all your mod is doing is recycling the small amount of fuel in the lines that go from the log to the bowl. The BG set up is very effective at keeping your pump cool. It really doesn't affect the fuel in the bowls as a cooling measure, like Rumble said a cool can is the way to cool fuel. Actually probably the most effective cooling of the fuel is the pressure drop in the Venturi.