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Copper Fuel Line?

Discussion in 'Early CJ5 and CJ6 Tech' started by Eric, Feb 18, 2022.

  1. Feb 20, 2022
    Eric

    Eric Member

    CA
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    Thank you. I will stick to 1/4 inch. I can find premade tubes with fittings at each end for a reasonable price about six feet long. Since it is just the one piece (that is the start of so many surprises, eh" "just this one..."), and since I need to cut it to put in a filter, I will do that. Are there any better ways to attach a fuel filter? Rubber fuel line with hose clamps?
     
    Last edited: Feb 20, 2022
  2. Feb 20, 2022
    Jw60

    Jw60 That guy 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    All I can say about filter placement is to have it a little above the tank so it doesn't puke all the fuel out when you change the filter.
     
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  3. Feb 21, 2022
    amboynut

    amboynut Member

    Chelatchie, WA
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    I'm not sure where you intend to mount the filter, but rubber fuel line should be avoided under the hood.
     
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  4. Feb 21, 2022
    Eric

    Eric Member

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    Thanks for the tip!
     
  5. Feb 21, 2022
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    I'd say Too Much rubber should be avoided, you need short pieces to to connect the hard line to the pump and an in line fuel filter if required.

    & Let's not forget some vehicles came from the factory with nothing but rubber under the hood, VW beetles come to mind. had to keep an eye on it to see when it was getting hard but most beetles never did burn to the ground. :D
     
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  6. Feb 21, 2022
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Fair comment.

    But today a lot of rubber line is dangerous garbage. Rots out in one season.

    Get American-made, ethanol resistant, SAE rated, etc.
     
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  7. Feb 21, 2022
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    It's been a while but some rubber hose I bought one time leaked right through the hose itself within minutes of initial use. Gasoline seeping through the hose in multiple spots! o_O:steamed: That's the only time I've seen it happen though. Just like anything else though it's up to the user to open the hood and check everything in a timely manner, even more so with the engine running.
     
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  8. Feb 21, 2022
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

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    Strongly endorsed. Gates is good. The Autozone / Pep Boys generic hose is so poor it's dangerous. Same for heater hose - not dangerous, but a breakdown waiting to happen.

    Anyway, use only the minimum amount of rubber fuel hose you need, and inspect any rubber hoses annually. Always use new when you remove the old.
     
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  9. Feb 21, 2022
    Eric

    Eric Member

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    Good reminder! Difficult to get around gravity, eh?!? hahahaha
     
  10. Feb 21, 2022
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

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    It has one good use - you can buy 10' of it and put it in your tool box as a siphon hose. Then if you need an emergency supply, like to a gas can on the cowl, you'll have some extra. Or you might need to siphon a little gas for one of your Jeepin' pals.
     
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  11. Feb 21, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

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    When I am finished putting a Jeep back on the road the only "rubber" line on it will be the flex line from the frame hard line to the pump. This is a reinforced line with brass fittings on each end to mate to the pump and hard line fittings. I use a hard line from the pump up to a glass bowl ceramic filter attached to the carburetor.
    This is how they were originally set up with the exception of the filter I use.
     
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  12. Feb 21, 2022
    Eric

    Eric Member

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    If you have time, can you post a photo of the filter in relation to the carb? You really piqued my curiosity! I don't think I will try it due to my current skill set, but who knows? Maybe one day! (If you posted it elsewhere, perhaps a link instead?)
     
  13. Feb 21, 2022
    Jw60

    Jw60 That guy 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Went to the garage one day and the filter hose had failed dumped the tank onto the floor. It was on the frame. Now with a TBI swap I have 6 sections of rubber.
    Hard line to filter, filter to TBI pump, pump to hard line, hard line to TBI, TBI return to return hard line, return hard line to tank, and some additional rubber vent line that won't be a mess should it fail.
    It all gets looked over regularly.
     
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  14. Feb 21, 2022
    Glenn

    Glenn Kinda grumpy old man Staff Member

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    It seems to me that a hard line with a glass filter attached at the carburetor would subject the filter to eventual failure due to vibration. Do you have it mounted in a certain way that eliminates that worry?
     
  15. Feb 21, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

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    Next time I go down to the barn I will take a picture. The filter is attached to the carburetor inlet using brass pipe nipple. On a flat fender Jeep with the L134 the hard line from the pump attaches to the input side of the filter. The filter is securely supported like this and vibration is not going to hurt it.

    On the CJ5 with the F134 and a Carter YF the carburetor inlet points toward the oil filler tube so you have to use an elbow fitting and install the filter to the side. I have to bend a new line from the pump to carburetor before I can install the Carter filter I have for this Jeep. Right now it is feeding off a temporary line with a steel canister in-line filter which is spliced into the hard line using rubber hose and clamps, which is why I consider it "temporary".
     
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  16. Feb 21, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

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    I found a picture of a similar filter, this one a Skinner, mounted in the same way I mounted mine. This is someone else's Jeep, and it is a CJ2A so this is mounted to a Carter WO on the L134. As I said the mounting to a YF on a F134 requires an elbow to clear the oil filler tube.

     
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  17. Feb 21, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

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    Found a picture of the one on my CJ2A. It is a AC filter with a replaceable paper element. These are reproduced and sold by vendors focused on old Chevys. This was when I first got the CJ2A running. The fender is off because I was replacing the steering box. An additional benefit of this setup is it moves the fuel line further away from the exhaust manifold, so vapor lock is not likely.

    I have a Carter NOS filter with the ceramic element which will be used on my CJ5.

     
    Last edited: Feb 21, 2022
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  18. Feb 21, 2022
    Glenn

    Glenn Kinda grumpy old man Staff Member

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    Looks good! I guess it would take quite a bit of abuse to have a problem with that. Just don't let the Dukes of Hazzard take it for a spin. :D
     
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  19. Feb 21, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

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    The Carter filters with the ceramic element are, in my opinion, the best fuel filter ever made. They last about forever, just clean them out and soak the element in solvent occasionally.

    The AC reproductions are easier to find, I got that one from "Danchuk Manufacturing".

    I got the NOS Carter from a member on the CJ2A Page forum, but sometimes they, and original AC filters show up on Ebay.
     
  20. Feb 21, 2022
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    I really doubt you'd ever see actual vapor lock in that section of line, regardless, since it is pressurized by the fuel pump.
     
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