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Thread: 1973 911T MFI fuel hose size help

  1. 09-10-2015, 09:02 AM #1
    socalozzy
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    1973 911T MFI fuel hose size help

    I'm replacing all the rubber fuel hoses on my 1973 911t mfi before I get it back on the road, I'm starting at the ones that connect to the gas tank, I need Help I don't know the sizes and I don't know which ones to order on pelican the sizes they have got me mixed up and how much I'm going to need for the car front(gas tank )and back(engine), also do I have to replace the lines that are under the pan?
    Thank so much this is my first 911
    Also any recommendations on what clamps to use?
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  2. 09-10-2015, 04:02 PM #2
    edmayo
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    The suction hose is 9mm I.D. the pressure hose is 7.00 mm I.D. (although We use 7.5, either will work) The line thru the tunnel is metal, other than that replace all of it. Measure line length and get more than you think you'll need.
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  3. 09-11-2015, 06:21 AM #3
    EsGeht
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    Not to hijack but to enhance... when replacing the lines from the tunnel to the fuel pump (stock '72 location) it looks very tight where the lines meet the body. I assume the sway bar and trans mount must be dropped. Are there any tips to this or is it pretty straight forward once those items are out of the way?
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  4. 09-11-2015, 06:47 AM #4
    socalozzy
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    Quote Originally Posted by edmayo View Post
    The suction hose is 9mm I.D. the pressure hose is 7.00 mm I.D. (although We use 7.5, either will work) The line thru the tunnel is metal, other than that replace all of it. Measure line length and get more than you think you'll need.
    Thanks for your help, it's just that on pelican has the sizes listed like this
    "Fuel Hose - 5.5 X 10.5 mm - Outside Cloth Braided" how do I know the size for 7.000mm & 9.00mm I.D?
    Also working pressure means that it's okay to use with fuel injection pressure?
    Thanks for your help
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  5. 09-11-2015, 06:59 AM #5
    edmayo
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    I have no clue as to how Pelican sizes their hose, we don'T buy from them. We buy from Wurth.

    Yes, you'll need to remove Trans cross member to access hoses.
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  6. 09-11-2015, 08:44 AM #6
    Rusty
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    Quote Originally Posted by edmayo View Post
    I have no clue as to how Pelican sizes their hose, we don'T buy from them. We buy from Wurth.

    Yes, you'll need to remove Trans cross member to access hoses.
    Are the sizes for the E and S MFI cars the same?

    Rusty
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  7. 09-11-2015, 08:50 AM #7
    edmayo
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    Yep, sure are.
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  8. 09-11-2015, 10:16 AM #8
    socalozzy
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    I'm new to the site, wurth is a member here?
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  9. 09-11-2015, 12:55 PM #9
    RSTarga
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    Wurth is an OEM supplier to most German Auto factories.

    http://www.wurthusa.com/web/en/website/index.php
    David

    '73 S Targa #0830 2.7 MFI rebuilt to RS specs
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  10. 09-12-2015, 07:41 PM #10
    socalozzy
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    thanks so much for your help, going to place my order today. wurth doesn't have a 9mm id fuel injection hose.
    did you buy it from another place?
    yhanks for your help just don't want to buy the wrong stuff
    Last edited by socalozzy; 09-12-2015 at 08:10 PM.
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