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Old December 11th, 2011, 02:01 PM   #1
tonkatruckon44s
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Default rubber hose vs metal fuel line

okay so i got my tbi k5 that has a fuel line leaking on it and it has rubber hose going from the sending unit to the metal fuel line and they have not burst or undergone any leaks i know rubber hose cracks and dry rots but it is way cheaper than buyin a 400 dollar fuel line kit from lmc. just seeing what everyone thought about deleting rusty fuel lines.
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Old December 11th, 2011, 02:04 PM   #2
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I have used 5/16 metal brake line and then rubber to the sending unit. You can get the brake line in a spool for under 30.00 then a ft of rubber and some clamps.
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Old December 11th, 2011, 02:48 PM   #3
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you can run 3/8 rubber hose just make sure it is fuel/emission hose rated at 60 psi. band tie the hose to the frame securely and place it out of harms way so it doesn't get torn or punctured. i have done this on a few cars and never had a problem.
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Old December 12th, 2011, 04:04 PM   #4
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400 dollar fuel line kit from lmc?!?!?! Unless its a show truck, just go get metal line from the parts store and bend it to fit as you go. Any good parts store will have everything you need to run your own line for less than $50!
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Old December 13th, 2011, 07:13 AM   #5
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400 dollar fuel line kit from lmc?!?!?! Unless its a show truck, just go get metal line from the parts store and bend it to fit as you go. Any good parts store will have everything you need to run your own line for less than $50!
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Old December 13th, 2011, 09:36 AM   #6
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With tbi you are only dealing with 10-11 pounds of fuel pressure.Buy one ft of 5/16 rubber,and a 20' roll of 5/16 steel brake line and have fun.I use the least amount of rubber possible,cant have more then 6" at the drag strip.I usually double clamp the rubber or use the high pressure hose clamps,just to be safe.
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Old December 13th, 2011, 03:41 PM   #7
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Originally Posted by Kodiak450r View Post
you can run 3/8 rubber hose just make sure it is fuel/emission hose rated at 60 psi. band tie the hose to the frame securely and place it out of harms way so it doesn't get torn or punctured. i have done this on a few cars and never had a problem.
You don't need 60 psi hose for a throttle body system. It runs 12-15 psi max

You can run rubber hose all the way back if you want. There's really nothing saying you can't, i did that on my on tbi k1500, got sick of rusty fuel lines and decided to just go the rubber line route. Never had a issue with it and it made it a hell of a lot easier when I had to replace the gas tank
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Old December 13th, 2011, 04:07 PM   #8
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i use the summit brand aluminum line with AN fittings you run it and cut it to length then ether flare it for the AN or rubber hose ! its very easy to work with and cheap!!!!!
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Old December 15th, 2011, 07:00 AM   #9
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There are some nice plastic/nylon line kits out there cheep.
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