Fuel line diameters for Merc 260 offshore

[ONE-A-DAY]

I converted my Daytona 22 from carbed 2.4 liters to offshore 2.5 260's so I need to re-do the fuel system, change to high pressure pumps, install return lines etc. Question, what diameter fuel line should I use? Same diameter to for the in line versus the return line?

Thanks, Walt

[pkstv]

Look up diamond marine "EFI fuel systems 101 "

[90 5.0]

3/8th's " or "-6 AN"

[patchesII]

3/8" feed and 5/16" return. I second the recommendation to look at Diamond Marine's website. Great info there

[90 5.0]

3/8" feed and 5/16" return. I second the recommendation to look at Diamond Marine's website. Great info there

Totally forgot about the return!!

5/16 or -4 an is perfect

[STV_Keith]

1/2" from the tank to the pump, 3/8" from the pump to the rail, 3/8" or 5/16" for the return.

http://www.diamondmarine.com/web_pages/Fuel%20System.htm