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03-28-2017, 04:33 PM #1
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Fuel line diameters for Merc 260 offshore
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
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03-28-2017, 04:48 PM #2
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Look up diamond marine "EFI fuel systems 101 "
Last edited by pkstv; 03-28-2017 at 04:51 PM.
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03-28-2017, 04:49 PM #3
6000 RPM
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3/8th's " or "-6 AN"
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03-28-2017, 05:46 PM #4
Screaming And Flying!
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3/8" feed and 5/16" return. I second the recommendation to look at Diamond Marine's website. Great info there
Erik Kiser
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03-28-2017, 07:07 PM #5
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Totally forgot about the return!!
Originally Posted by patchesII
5/16 or -4 an is perfect
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03-29-2017, 12:14 PM #6
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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_pag...l%20System.htmKeith-
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