Fuel Line I.D.?
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Laughing Gas
Joined: Jul 2018
Posts: 816
Likes: 7
From: Prescott, AZ
Fuel Line I.D.?
Preparing for the Hutch/Harpoon and installing the RiffRaff in-line filter. The filter has -8AN male fittings, requiring a -8AN female to hose barb adapter. I want to simply remove a small section of the factory fuel line between the tank and pump, and replace it with the filter and fittings.
Q: What size hose barb will fit inside the factory fuel line? I've seen both 3/8" and 5/16" mentioned when replacing the line from the tank to the pump, but nothing that specifies what the existing line is internally.
Q: What size hose barb will fit inside the factory fuel line? I've seen both 3/8" and 5/16" mentioned when replacing the line from the tank to the pump, but nothing that specifies what the existing line is internally.
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
I used 3/8 barbs, with 3/8 fuel injection hose. Starting at the tank, I pushed the hose over the barb coming off the sending unit tripped clamped that one, then threaded hose to the RACOR filter 2 clamps, then on other side of RACOR 3/8” with 2 fuel injection clamps to the back side of the pump. I left the stock lines in place.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,809
Likes: 1,334
From: Elk Grove, CA
Ditto what John said, just leave the stock line there. It has the leaky QR fittings at both ends, you want to avoid them. Use new hose from tank to filter. 3/8 and I think it's 30R7 for diesel, then fuel injection clamps not worm drive clamps. Make sure the hose is routed well and supported, sometimes it can get pinched when putting the tank up. Extra hands very nice to have. I used 5/16 from filter to pump to match the pump inlet.
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Laughing Gas
Joined: Jul 2018
Posts: 816
Likes: 7
From: Prescott, AZ
Ditto what John said, just leave the stock line there. It has the leaky QR fittings at both ends, you want to avoid them. Use new hose from tank to filter. 3/8 and I think it's 30R7 for diesel, then fuel injection clamps not worm drive clamps. Make sure the hose is routed well and supported, sometimes it can get pinched when putting the tank up. Extra hands very nice to have. I used 5/16 from filter to pump to match the pump inlet.
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
I left a loop of hose in case I need to cut some off.
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Laughing Gas
Joined: Jul 2018
Posts: 816
Likes: 7
From: Prescott, AZ
Very clean install @Colorado350 . I always appreciate a measure of "service loop" in both hoses and wiring should the need to change ends or make other adjustments arise.
I have the small RiffRaff inline cartridge filter for now. Used lots of Racors in the marine industry, if the RiffRaff doesn't cut it I'll upgrade. Thanks for the pics!
I have the small RiffRaff inline cartridge filter for now. Used lots of Racors in the marine industry, if the RiffRaff doesn't cut it I'll upgrade. Thanks for the pics!
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