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Thread: fuel lines

  1. #1
    Junior Member 1st year Apprentice
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    Default fuel lines

    hey guys im currently doing the fuel setup in my ke30, sr20, i was just wondering does anyone now if its legal to have braided line for my fuel supply and return or does it have to be hard lines ie steel.

    cheers

  2. #2
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: fuel lines

    under the car?
    why not use hardlines? cheaper, stronger, more reliable....
    run two new 8mm lines from bundy and you have nothing to worry about
    "I'm a Teaspoon, not a mechanic"
    "There is hardly anything in the world that a man can not make a little worse and sell a little cheaper" - John Ruskin (1819 - 1900)

    AU$TRALIA... come and stay and PAY and PAY!!! The moral high horse of the world!

  3. #3
    Junior Member 1st year Apprentice
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    Default Re: fuel lines

    well do u think that i need to change both or just the fuel in line and use the old fuel in line as a return line or would u reccomend changing both

  4. #4
    Gobble, Gobble! Automotive Encyclopaedia mrshin's Avatar
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    Default Re: fuel lines

    Quote Originally Posted by NeDiC
    well do u think that i need to change both or just the fuel in line and use the old fuel in line as a return line or would u reccomend changing both
    Doing this will work fine, just make sure the old line is in good order.

  5. #5
    wire jiggler supreme Backyard Mechanic celicapain's Avatar
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    Default Re: fuel lines

    you should try the ls1 setup, just run one line to the engine, with pump/pressure regulator/return all in the tank.
    GA23(never finished-now with cracked block ) JZX83 (Tyre eater) 3sgte AE86. by now i should know better.

  6. #6
    2JZ POWA Chief Engine Builder GU11TY's Avatar
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    Default Re: fuel lines

    u can use just copper tubeing and bend it 2 place..
    or u can use hose or braided line.. just make sure u clamp it properly.. cause i doubt a cop is gonna come up and check ur fuel lines n say thats illegal
    Z20 SOARER WHORE (totalling 14 z20s so far)
    PREVIOUS RIDES - 5 GZ20 soarers, 1 MZ20 soarer, 2 MZ20 aerocabins soarers, 7 MZ21 soarers, 3 ke70s, AE92 rola, 1973 corona, 85 corona, tarago party bus
    CURRENT - 530hp 2jz MZ20 Soarer and race soarer with carbon fibre bonnet and boot and 8point cage

  7. #7
    Junior Member Backyard Mechanic celicaboy_2000's Avatar
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    Default Re: fuel lines

    Im using copper fuel lines so im hoping it's legal... Is it? .

  8. #8
    2JZ POWA Chief Engine Builder GU11TY's Avatar
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    Default Re: fuel lines

    yeh mate. .....
    Z20 SOARER WHORE (totalling 14 z20s so far)
    PREVIOUS RIDES - 5 GZ20 soarers, 1 MZ20 soarer, 2 MZ20 aerocabins soarers, 7 MZ21 soarers, 3 ke70s, AE92 rola, 1973 corona, 85 corona, tarago party bus
    CURRENT - 530hp 2jz MZ20 Soarer and race soarer with carbon fibre bonnet and boot and 8point cage

  9. #9
    Junior Member Domestic Engineer Pube's Avatar
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    Default Re: fuel lines

    copper no, bundy tube yes.
    SOLD : 1GGTE Rt142 Corona - Twin TD04-9b turbos - 180rwkw = 13.1 @105mph

  10. #10
    2JZ POWA Chief Engine Builder GU11TY's Avatar
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    Default Re: fuel lines

    y aint copper oens legal?
    Z20 SOARER WHORE (totalling 14 z20s so far)
    PREVIOUS RIDES - 5 GZ20 soarers, 1 MZ20 soarer, 2 MZ20 aerocabins soarers, 7 MZ21 soarers, 3 ke70s, AE92 rola, 1973 corona, 85 corona, tarago party bus
    CURRENT - 530hp 2jz MZ20 Soarer and race soarer with carbon fibre bonnet and boot and 8point cage

  11. #11
    Junior Member Backyard Mechanic celicaboy_2000's Avatar
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    Default Re: fuel lines

    Who to believe GU11TY or pube of to the engineer I go. The bundy is copper coated steel is that correct? Any idea why the copper piping isn't worthy for the job?

  12. #12
    2JZ POWA Chief Engine Builder GU11TY's Avatar
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    Default Re: fuel lines

    hehe well my mate was told the other day by a mechanic to go buy sum copper lines to use as his fuel lines
    i dunno even if it aint legal i doubt u wil ever get asked or pulled up about it
    Z20 SOARER WHORE (totalling 14 z20s so far)
    PREVIOUS RIDES - 5 GZ20 soarers, 1 MZ20 soarer, 2 MZ20 aerocabins soarers, 7 MZ21 soarers, 3 ke70s, AE92 rola, 1973 corona, 85 corona, tarago party bus
    CURRENT - 530hp 2jz MZ20 Soarer and race soarer with carbon fibre bonnet and boot and 8point cage

  13. #13
    Junior Member Backyard Mechanic celicaboy_2000's Avatar
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    Default Re: fuel lines

    Yeah i'll be leaving it in but im just worried that there may be a corrosion issue?

  14. #14
    Junior Member Domestic Engineer Pube's Avatar
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    Default Re: fuel lines

    copper work hardens easy so over time with vibrations, it can fracture. Bundy tube is copper coated steel tube. Sure steel tube work hardens but not as easy as copper. Id say bundy tube is copper coated to protect it from corrosion. You would also notice brake lines made from steel tube, not copper.
    SOLD : 1GGTE Rt142 Corona - Twin TD04-9b turbos - 180rwkw = 13.1 @105mph

  15. #15
    Junior Member Backyard Mechanic MR04AG's Avatar
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    Default Re: fuel lines

    I spoke to a mate about this when i put the big port 4AGE in my KE70, I used a new 8mm feed line and my original 5ishmm feed line for a return to my surge I think you'll find bundy is steel coated as copper is the slightest bit porous and if it's not coated the pissyest amount of fuel can escape in vapour form through the line potentially causing an unsafe environment in a shed over an extended period of time... bloody over thinking engineers. It might be something else i'm thinking of though LOL

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