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Thread: How is everyone repairing broken plastic vacuum lines?

  1. #1
    Mitsu booster
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    How is everyone repairing broken plastic vacuum lines?

    What is everyone doing to repair the plastic vacuum lines?

    I was going to replace with rubber lines. But would have to come up with some type of connectors.

    This will be on my 89 shelby dakota but after it is back on the road I plan on working on my basket case 85 onmi glh-t.

  2. #2
    Garrett booster
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    Re: How is everyone repairing broken plastic vacuum lines?

    using a vacuum block with silicone hoses while trying to keep it look cleanish.

  3. #3
    Supporting Member II Turbo Mopar Contributor tryingbe's Avatar
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    Re: How is everyone repairing broken plastic vacuum lines?

    Drill and tap the intake manifold.


  4. #4
    turbo addict
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    Re: How is everyone repairing broken plastic vacuum lines?

    https://www.automationdirect.com/adc...t_nylon_tubing


    Buying from here for cheap and just replacing them as needed. you'll need 5/32(4mm) and 1/4" to replace all the factory nylon lines.

  5. #5
    Supporting Member II Turbo Mopar Contributor 85lebaront2's Avatar
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    Re: How is everyone repairing broken plastic vacuum lines?

    If they have just cracked at one place and is part of a "bundle' so it will remain straight, I have used heat shrink tubing. Cut an appropriate length, wipe any oil or grease off the broken ends, slide the heat shrink over the end of one piece, mate them, center the heat shrink and use a heat gun to complete the repair. It is almost invisible if you use black heat shrink.
    "growing old is inevitable, growing up is optional"
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  6. #6
    Supporting Member II Turbo Mopar Contributor
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    Re: How is everyone repairing broken plastic vacuum lines?

    Quote Originally Posted by 85lebaront2 View Post
    If they have just cracked at one place and is part of a "bundle' so it will remain straight, I have used heat shrink tubing. Cut an appropriate length, wipe any oil or grease off the broken ends, slide the heat shrink over the end of one piece, mate them, center the heat shrink and use a heat gun to complete the repair. It is almost invisible if you use black heat shrink.
    I assume you used the heatshrink with the the glue on the inside to help the seal. It goes by various names
    Regards,
    Miles

    DD '87 Sundance T1, 12PSI, SLH with rear disks
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  7. #7
    Supporting Member Turbo Mopar Contributor supercrackerbox's Avatar
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    Re: How is everyone repairing broken plastic vacuum lines?

    You used to be able to buy new plastic at parts stores.

  8. #8

    Re: How is everyone repairing broken plastic vacuum lines?

    You can buy various sized vacuum line from McMaster Carr. Use a heat gun to shape as needed. Bought a size just a tad larger than the standard size (I think 1/8 ID) and re-ran my stuff to the collector on the intake. Used silicone and heat shrink tubing to keep things in place. So far so good about two years later.
    [SIZE="3"] [B]Jon Trotter[/B][/SIZE] [B]1985[/B] Dodge Shelby Charger, Currently decommissioned [B]1987[/B] Shelby GLHS, #937 [B]1987[/B] Shelby Lancer, #628 [QUOTE=Reeves;587010]I can be ready. Please send pics of wife. _____DodgeZ add comments here______[/QUOTE]

  9. #9
    Supporting Member II Turbo Mopar Contributor Dr. Johny Dodge's Avatar
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    Re: How is everyone repairing broken plastic vacuum lines?

    buy this buy that or scrounge exactly the right thing
    hummm...

    80's jeep trucks came with a few different motors

    whatever the "right" one is/was when I found it , it had hard-ish vacuum lines like our mopar ones , but slightly softer and still flexible on an old used up truck ( early 90's)

    to boot , if you've ever had an early log motor you've probably noted the coloured ink dabs on your vacuum solenoids ...

    the jeep truck had the same yellow, white, blue and green vacuum lines , in the EXACT same colours

    as a huge bonus it even had right angled and straight boot-ie ends for each line exactly the same as our mopar ones.. in matching colours

    another great scrapyard discovery was in the late 80's early 90's mazdas
    you want to remember to look under mazda hoods for the vacuum solenoid vent cap/covers
    - to replace our blown away to dust foam block ones

    the mazda vent looks like a little black rubber mushroom
    it is two pieces a top , round cap and a lower section that fits on the solenoid nipple
    inside is a removable, cleanable , replaceable piece of foam
    same sort of foam our little exposed block style solenoid filters were made of

    - these mopar SHOULD have used ... and they're also pretty much garden hose proof when rinsing out things

  10. #10
    turbo addict
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    Re: How is everyone repairing broken plastic vacuum lines?

    Air Line from air bags, like at truck parts places....work great.
    Great stuff for great cars! Poly engine mounts and bushings at: http://www.polybushings.com

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