Leak-Proof Quadrajet Well Plugs

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  • Опубліковано 5 сер 2024
  • According to the manufacturer and Quadrajet experts, four-barrel carburetors built before 1975 had leaking primary and secondary well plugs (plus a couple of other spots).
    The best way to take care of this issue is with fuel-impervious epoxy or, ideally, with mechanical plugs.
    I have had excellent results using epoxy in the past. But set screws for the primary wells and new aluminum plugs with O-rings for the secondary wells are the better, long-term option.
    This video shows how I installed 10-32 set screws for the primary wells after drilling out the factory plugs. The best time to do this upgrade or repair is during a complete carburetor rebuild.
    I hope you find this video helpful.
    Thank you for watching! 🙂👍🏻
    ======================================
    CONTENTS
    00:00 Quadrajet Primary Set Screws
    00:18 Drilling Out the Original Well Plugs
    00:40 How to Remove Old Well Plug Remnants
    01:47 Tapping the Primary Wells
    03:11 Installing 10-32 Allen Head Set Screws
    04:45 Secondary Wells and Other Leak-Prone Circuits
    ======================================
    CORVETTE PRODUCTS (sponsored)
    ⭐️ JB Weld Tank Weld Putty: amzn.to/38RNfFk
    ⭐️ 10-32 x 1/4-Inch Set Screw (20-Pack): amzn.to/3mdjOjV
    ⭐️ 10-32 Plug Tap and No. 21 Drill Bit Set: amzn.to/3MjEC47
    ⭐️ Permatex Fuel Resistant Gasket Sealant: amzn.to/3apxrtA
    ======================================
    DISCLAIMER: Even though I like to wrench on Corvettes and most of my videos are of a how-to nature, I am not responsible nor liable should you decide to follow my musings on the subject.
    The repairs and other work I do are for my own benefit and entertainment, and even though my videos may sound and appear to give technical how-to advice, that's not my intention.
    Working on a vehicle is inherently dangerous. If you're not confident, qualified, or lack the tools to do the job correctly and safely, hire a licensed mechanic.
    #corvettec3 #c3corvette #carburetor
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КОМЕНТАРІ • 30

  • @sethhardsocg8442
    @sethhardsocg8442 9 місяців тому +3

    JB weld over the plugs has always done well for me

  • @georgekalafatis7286
    @georgekalafatis7286 5 місяців тому +2

    I've been building carburetors since I was 16 at quality Chevrolet when I was a tech always pull them well plugs because there's crud inside there no matter how long you soak that carburetor

  • @omarpatino4230
    @omarpatino4230 Рік тому +1

    man, that's an amazing fix on those small plugs I'm going to do mine like that now that I've seen you do it.

    • @76vette
      @76vette  Рік тому +1

      Thanks and good luck! They work great. You can also epoxy the threads if you want, but use Marine Epoxy. 😊👍🏻

  • @musclecarmitch908
    @musclecarmitch908 2 роки тому +2

    Great job!👍

    • @76vette
      @76vette  2 роки тому +1

      Thank you for watching! 😊👍🏻

  • @cleopooch8640
    @cleopooch8640 8 місяців тому +1

    excellente

  • @williamapostolu5062
    @williamapostolu5062 11 місяців тому +1

    Great video, thanks for demo. Will start mine tomorrow. What thread sealer did you use. not aware of any gas proof ones. was going to use JB weld, its fuel resistant. Thanks

    • @76vette
      @76vette  11 місяців тому

      I think I used a gas-resistant thread sealer paste by Permatex, amzn.to/3YKP24D
      But the JB Weld you already have should also work fine. 😊👍🏻

  • @bluesxt
    @bluesxt 2 роки тому

    I need to pick me up some of that tank weld to seal up my secondary plug wells on my vette 👍🏻

    • @76vette
      @76vette  2 роки тому +1

      1705 Quadrajet carburetors did not really have leaky wells.
      From what I’ve read, it’s kind of rare.
      704 and earlier Qjets are prone to develop well leaks.

    • @jku72
      @jku72 11 місяців тому +1

      Did it work? I’ve seen plugs threaded in by others but they always leaked after a while too.

    • @76vette
      @76vette  11 місяців тому

      So far, so good 😊👍🏻

  • @Spiritof_76
    @Spiritof_76 3 місяці тому

    How deep can these plugs go before they impede the flow of fuel?

    • @76vette
      @76vette  3 місяці тому

      I would not use plugs or set screws longer than the original plugs you remove. Also, use marine-grade epoxy to seal the threads. 😊👍🏻

  • @dobetterman1904
    @dobetterman1904 9 місяців тому

    I'm about to do my primary plugs. DO you think red loctite 271 would work well for the set screws? I read its ethanol and fuel resistant. I'm not so sold on JB I'm reading allot of them leak eventually. Maybe Marine Tex is better? I haven't read about people using Loctite red 271 yet.

    • @dobetterman1904
      @dobetterman1904 9 місяців тому

      what thread sealer did you use?

    • @76vette
      @76vette  9 місяців тому +1

      I used Permatex thread sealer which is also fuel resistant. I like to have the ability to remove the plugs if necessary. Not sure if red Loctite would work. Sorry.

    • @dobetterman1904
      @dobetterman1904 9 місяців тому +1

      Thank you so much. Your videos are extremely well made and helpful!@@76vette

    • @76vette
      @76vette  9 місяців тому

      @@dobetterman1904 Thank you for watching! 😊👍🏻

  • @Achilisvobak
    @Achilisvobak 24 дні тому

    Hello, I followed your instructions and ordered all the products to repair the primary well plugs but mine still leak after following all your steps. The sealant looks blue in the link that you left compare to the white you use? What would you advise to get this leak repaired? Thanks

    • @76vette
      @76vette  24 дні тому

      Use marine epoxy to seal the threads. That should do it. 😊👍🏻

    • @Achilisvobak
      @Achilisvobak 24 дні тому

      @@76vette What do you recommend?

    • @Achilisvobak
      @Achilisvobak 24 дні тому

      I mean what product brand?

    • @Achilisvobak
      @Achilisvobak 24 дні тому

      would Loctite, 0.85 fl oz, 1 Syringe, White, Epoxy Resin Marine Adhesive work?

    • @76vette
      @76vette  24 дні тому

      @@Achilisvobak Maybe something like this? amzn.to/4f3HfX2

  • @thomaspeeler5725
    @thomaspeeler5725 7 місяців тому +1

    How do you test to see if the well plugs are leaking?

    • @76vette
      @76vette  7 місяців тому

      I test them with the carb on the bench. I pour gas, or alcohol, or paint thinner into the bowl and allow it to sit for an hour or so. If the well plugs are leaking the fuel level will go down and the well plugs will be wet.

    • @thomaspeeler5725
      @thomaspeeler5725 7 місяців тому +1

      Thank you!@@76vette

    • @76vette
      @76vette  7 місяців тому

      @@thomaspeeler5725 You’re welcome 😊👍🏻