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Thread: Gas tank vent lines

  1. #1

    Gas tank vent lines

    Have we determined a source for the fuel tank vent lines on the early cars? There has been a thread on it but having no luck. There are vendors who have the clear tubing but it must be fuel vapor resistant . I think McMaster Carr has it but itís yellow. Thoughts?
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  2. #2
    Small tubing is 10mm I.d.,large is 16mm I’d

  3. #3
    Senior Member Simonjjb's Avatar
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    I looked recently...and No, except Yellow
    1968 911L Coupe - Golden Green
    1971 911S Coupe - Gemini Blue
    1973 911S Targa - Signal Yellow
    1974 914 2.3 - Sunflower Yellow

  4. #4
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    Porsche has them in stock now and they're good. Use Porsche part numbers. They have both sizes now and they fit good and are more pliable then all the others I've tried.
    72S, 72 3.5L Signal Green, 914-6 GT Signal Green

  5. #5
    Senior Member
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    In 2006 I used hardware store PVC tubing in the necessary sizes. So far, no problems.
    Harry

    Member #789
    1970 VW Sunroof Kombi Bus - "The Magic Bus"
    1973.5 911T Targa for fun - "Smokey"
    2009 MB C300

  6. #6
    Senior Member Simonjjb's Avatar
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    Quote Originally Posted by Longballa View Post
    Porsche has them in stock now and they're good. Use Porsche part numbers. They have both sizes now and they fit good and are more pliable then all the others I've tried.
    That’s great. I hate the yellow.
    1968 911L Coupe - Golden Green
    1971 911S Coupe - Gemini Blue
    1973 911S Targa - Signal Yellow
    1974 914 2.3 - Sunflower Yellow

  7. #7
    I found Stoddard has the correct 16mm. $50 per meter! Fortunately 1 meter should do it.

  8. #8
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    Cohline has the correct size clear hose . It is not necessarily fuel resistant but neither was the original , therefore it turned yellow and hard . Stoddard is probably selling the Cohline .

  9. #9
    Peter Kane

    '72 911S Targa
    Message Board Co-Moderator - Early 911S Registry #100

  10. #10
    I researched this quite a bit. As crazy as it sounds, with everything the Tygon line is resistant to, gasoline is not listed. The specific properties of gasoline, and in particular ethanol based gasoline gives plastic based materials problems. Now I never ended up trying the Tygon line, so I can’t say for sure. I did write a letter to the manufacturer asking about it’s resistance to gasoline, but received no response.
    1969 911 E #824

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