1970 -6 Gas Tank Supply Pipe Hose Bead Question, Morphed into: “Does the OE fuel return system cool fuel going to engine?” uh … No Options

[Rufus]

Hi Folks - I have the entire fuel system out of 9140431482 back to the Webers for update, cleaning, etc. (Webers already reinstalled after thorough cleaning.) The gas tank fuel outlet pipe has no hose bead.

Is this normal? Seems odd there wouldn’t be one.

Thanks,
Bob

[Rufus]

@brant Thanks Brant. I’m not trying to be argumentative; only trying to see if there’s something I don’t understand. I understand better now what your suggestions are based on, and whether they might apply to my situation of 100% street driving, using only gas without ethanol, etc., etc..

My thinking is the percentage of excess fuel returned from the OE FP to the tank is warmer than the fuel in the tank at ambient when the engine’s 1st started. How much higher is an open question. But certainly the return fuel is carrying some heat back into the tank and dispersing it into the rest of the fuel in the tank. The longer and harder the engine operates / works, and the lower the fuel volume in the tank, the more the in-tank fuel temp rises. And the more fuel entering the pump and being sent to the carbs heats up.