35spline

iTrader: (1)

I am currently looking at my Walbro 450 which has a 3/8 output line to the top of the tank and wondering why some recommend going with a larger an8 or an10 supply line to the front? What would be the benefit? Fuel still has to flow thru a 3/8 line to get out of the tank, can anyone explain?

S_M_I_D_D_Y

Friction. The longer the hose, and the more bends you use, the bigger the diameter has to be to allow the same amount of flow & pressure at the other end

stevieturbo

Pretty much.

And even most -8 fittings drop internal diameter down much smaller than 1/2" too.