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Copper from Lowes for fuel line?

Discussion in 'The Hokey Ass Message Board' started by Stevie Nash, Nov 6, 2013.

  1. I drive a fridge ... cant beat the sound of a y-block ... but I regress. If you plan on racing the car then it wont pass T.I. .. go with what will. But if its a driver then copper will work but you should isolate it and remember to not set a head or manifold near or on it when changing head gaskets ... you'll find out why its called "soft" copper.
     
  2. alchemy
    Joined: Sep 27, 2002
    Posts: 20,516

    alchemy
    Member


    Why? Can't you bend the regular steel lines properly? Maybe the problem is a cheapo bender. I've never had problems bending up some partstore steel line for the fuel system. Other than forgetting to put the nut on before I flared it.
     
  3. chromeazone
    Joined: Apr 23, 2009
    Posts: 231

    chromeazone

    !. Lowe's in my area always gives VET discount (10%). Home Depot NOT!

    2. Have used copper for auto trans lines and fuel lines. Never been a problem with leaking, etc.
     
  4. castirondude
    Joined: Jan 26, 2012
    Posts: 496

    castirondude
    Member

    I was just thinking that. In my experience run of the mill fuel line from auto parts stores lasts far less long than copper lines will. I've had at least half a dozen pinhole leaks over the years from rubber gas lines that were less than 10 years old.

    Always buy fuel hose from well known brands.

    Sent from my Verizon 4G LTE smartphone
     
  5. Corrosion resistance.

    Use it once and you'll be hooked.
    It's like crack to a guy that does more than one line every three years
     
  6. Soviet
    Joined: Sep 4, 2005
    Posts: 729

    Soviet
    Member

    I buy mine closer to 2.00/ft

    Cunifer is a very similar alloy. Flexible like copper, doesn't work harden, corrosion resistant and all around awesome. Being from MN, I've run quite a few brake/fuel lines without a single issue.
     
  7. tjet
    Joined: Mar 16, 2009
    Posts: 1,335

    tjet
    Member
    1. Early Hemi Tech

  8. Bert Kollar
    Joined: Jan 10, 2007
    Posts: 1,233

    Bert Kollar
    Member

    how much do you need. Send me a zip code and I'll ship you a short piece for shipping charges. I built an autocross race car 41 years ago with copper fuel line AND brake line and it is still going strong. I use refrigeration grade copper and it will withstand more pressure and vibration than you will ever expose it to. I have 3/8 copper fuel line in my two current hot rods and no problem. Install it properly and drive on
     
  9. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,333

    gimpyshotrods
    ALLIANCE MEMBER

  10. Stevie Nash
    Joined: Oct 24, 2007
    Posts: 2,999

    Stevie Nash
    Member

    Where?
     
  11. Drive Em
    Joined: Aug 25, 2006
    Posts: 1,748

    Drive Em
    Member

    To really throw a monkey wrench in the program, it is common practice in circle track cars (sprint cars and modifieds) to plumb the brake lines with brass compression fittings and plastic brake lines. I have done several dozen cars, and it holds up just fine.
     
  12. 31Apickup
    Joined: Nov 8, 2005
    Posts: 3,379

    31Apickup
    Member

  13. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,333

    gimpyshotrods
    ALLIANCE MEMBER

    Not legal for the street, in quite a few places. Not sure what an insurance accident investigator would make of it.
     
  14. Drive Em
    Joined: Aug 25, 2006
    Posts: 1,748

    Drive Em
    Member

    I would never condone using plastic on a street car. I was just pointing out what is out there.
     
  15. So every truck and trailer on the road is illegal?
     
  16. castirondude
    Joined: Jan 26, 2012
    Posts: 496

    castirondude
    Member

    Air brake systems are limited to ~130 psi and are quite tolerant to leaks. IIRC hydraulic brakes are about 10x that pressure, and even small leaks renders them inoperable.

    Anyway i think we beat this subject to death :D

    Sent from my Verizon 4G LTE smartphone
     
  17. F&J
    Joined: Apr 5, 2007
    Posts: 13,222

    F&J
    Member


    Why yes, I read it on this thread..:D

    Synflex is tough stuff, 2 layers, one outer black layer bonded to the clear inner liner. Good for fuels and air. Think about the airbraked trucks; the air compressor does put out oil film as they get miles on them, and that inner liner must be oil (or petroleum) proof. Very abrasion resistant, tough to kink or cut in service. Lots of mechanical connector types including slip fit that locks in, to reinforced compression fittings that have a crush proof inner brass tube.
     
  18. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,333

    gimpyshotrods
    ALLIANCE MEMBER

    Apples to doughnuts. Hydraulic and air brake systems are not directly comparable. 1300psi versus 130psi.

    A pressure loss in an air brake system causes the parking brake to be instantly applied.

    A pressure loss in an hydraulic brake system causes partial to total system failure, and requires operator intervention to apply the parking brake.

    Oh, and last time that I checked, this is a rod and custom forum, not a semi-truck forum, so try to stay in context.
     
  19. I don't get it. 5/16 and 3/8 steel lines bend easy with cheap tubing benders. I've been using the same ones for 50+ years. Use what you want for gas lines, but steel being too hard to bend is BS.

    Charlie
     
  20. Watch your blanket statements, they tend to paint folks into corners. :rolleyes:
     
  21. I agree Charlie, and from pals that have used that new greenish stuff from NAPA it bends even easier.
     
  22. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,333

    gimpyshotrods
    ALLIANCE MEMBER

    There was no blanket statement, and not a single statement about an individual, or group of individuals, other than urging you to remain in the context that this is a car/light truck forum, and that the response was to a post made on using plastic tubing, for car hydraulic brakes, and not anything to do with anything that does not concern this site, or issue.
     
    Last edited: Nov 7, 2013
  23. F&J
    Joined: Apr 5, 2007
    Posts: 13,222

    F&J
    Member

    i was not implying to use synflex as hyd brake lines, i was talking about it's uses as fuel lines, and it's durability for such use.
     
  24. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,333

    gimpyshotrods
    ALLIANCE MEMBER

    I know, and yes, it works well for that.
     
  25. 2dr_sedan
    Joined: Mar 25, 2005
    Posts: 265

    2dr_sedan
    Member

    OP - Is there a reason you want/gotta have copper lines?
     
  26. fordflambe
    Joined: Apr 9, 2007
    Posts: 573

    fordflambe
    Member

    only problem I see with copper is you should never leave it in a parking lot where the scrap metal thieves can find it..........They seem to be attracted to copper...........just kidding..........
     
  27. Stevie Nash
    Joined: Oct 24, 2007
    Posts: 2,999

    Stevie Nash
    Member

    Bend yes, double flare no.....
     
  28. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,333

    gimpyshotrods
    ALLIANCE MEMBER

    What tool are you using to double-flare?

    I use a KD Tools 41860 manual kit. I do 2-10 flares a week with it. No trouble, steel, or Cunifer. Anything but stainless.
     
  29. O.Hove
    Joined: Feb 12, 2006
    Posts: 772

    O.Hove
    Member Emeritus
    from S.D.

    Chevy Pickup in the 50's came from the factory with copper lines from the fuel tank forward
     

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