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Bypass Fitting

Discussion in 'Early CJ5 and CJ6 Tech' started by Jp274, Dec 16, 2019.

  1. Dec 16, 2019
    Jp274

    Jp274 New Member

    Hewitt, NJ
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    How the F**k do you get the fittings out for the bypass hose? Mine are original from 1960 and feel like there just gonna snap right off. F134 motor trying to avoid having to drill and tap the head if possible
     
  2. Dec 16, 2019
    Buildflycrash

    Buildflycrash Member 2020 Sponsor

    Gulf Breeze FL...
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    Is it like a pipe fitting?
    Cut it down, cut inside wall of pipe to threads (hacksaw, Dremel tool) , collapse pipe with chisel or whatever you can hammer in there. Bugger it all up and order a new intake, Or do what I did - take it to the machine shop.
     
  3. Dec 16, 2019
    PeteL

    PeteL Member 2020 Sponsor 2019 Sponsor

    Hills of NH
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    2x on the above. Or, perhaps plenty of heat with a torch, then an internal extractor? How I removed a broken spark plug thread.
     
  4. Dec 16, 2019
    Twin2

    Twin2 not him 2020 Sponsor 2019 Sponsor

    Virginia Beach, VA
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    I used these at work . did the job 90% of time
    the other 10% . did what other post said . cut and beat out with chisel
    Walton - Copy.jpg

    someone lost one :steamed:
     
  5. Dec 16, 2019
    Jw60

    Jw60 Recovering Jeepaholic

    Sedalia MO.
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    If it has a free flowing heater the bypass is not necessary or you can run the bypass to the rear of the head. Bypass is needed when there is no heater or if the heater is controlled by a shut off valve that closes completely.
     
  6. Dec 17, 2019
    Jp274

    Jp274 New Member

    Hewitt, NJ
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    Thanks for the reply’s. I’m gonna give it a try again tonight and see how it goes.
     
  7. Dec 17, 2019
    Rick Whitson

    Rick Whitson Detroit Area 2020 Sponsor 2019 Sponsor

    I live South of...
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    Welcome form Michigan,I have an old school square pipe extractor, you drive it in and it bites into the pipe and you can turn it out with a crescent wrench. will send it to you if it will help.
     
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  8. Dec 17, 2019
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    Have you put some penetrating oil on the outside threads to soak?
     
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  9. Dec 17, 2019
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    Some of the thread-in hose nipples are steel, and older one may be cast iron, the cast ones will break or shatter without too much force. Why are you trying to remove yours?
    -Donny
     
  10. Dec 17, 2019
    Jp274

    Jp274 New Member

    Hewitt, NJ
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    Install a bypass hose so I can put a manual shut off on the heater
     
  11. Dec 17, 2019
    Jw60

    Jw60 Recovering Jeepaholic

    Sedalia MO.
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    What valve did you use?
     
  12. Dec 17, 2019
    Jp274

    Jp274 New Member

    Hewitt, NJ
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    I purchased the manual valve walcks sells.
     
  13. Dec 17, 2019
    45es

    45es Member 2019 Sponsor

    Naches, WA
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  14. Dec 18, 2019
    Rick Whitson

    Rick Whitson Detroit Area 2020 Sponsor 2019 Sponsor

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    Last case scenario, I have burned out steel bolts from cast iron with a welding torch. You heat the steel red with the torch, turn off the gas, and let the oxygen melt the steel away, it will not melt the cast iron. Scary but can be done, I have got broken exhaust bolts out of heads that way before. Good Luck
     
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  15. Dec 18, 2019
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    Yes, Rick's technique works, but requires a lot of skill to pull it off without damage. I have tried this method a time or two with limited success. I was able to get most of the broken bolt out, but not all.
    -Donny
     
  16. Dec 18, 2019
    Jp274

    Jp274 New Member

    Hewitt, NJ
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    After much attempt I think I’m just gonna go the bypass heater valve route much easier
     
  17. Dec 18, 2019
    45es

    45es Member 2019 Sponsor

    Naches, WA
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    Just an FYI regarding the bypass valve I posted. There are several vacuum operated valves available at a much lower price. Only thing there is, unless you want full bypass or full heat, a vacuum regulating value is needed to modulate the valve.
     
  18. Dec 21, 2019
    wasillashack

    wasillashack Member

    Wasilla, Alaska
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    Using an O/A torch to remove broken bolts/fittings etc. has worked for me for 50 years, scary yes. To convince yourself. find a piece of cast iron and try cutting it with a torch. When you are comfortable with it, try it on a broken bolt or stud, concentrate on the center of the bolt/stud/fitting and work out in ever increasing circles until the whole bolt/stud/fitting is cherry red and give it a shot of oxygen, when the part being removed is hot enough, it will blow it right out. This process can be repeated, if necessary. I usually blow or pick out any debris, and run a tap in the hole. Good luck!
     
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  19. Dec 21, 2019
    47v6

    47v6 junk wrecker! 2020 Sponsor

    Washington DC.
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    Still, skill involved. I have not too much..
     
  20. Dec 24, 2019
    wasillashack

    wasillashack Member

    Wasilla, Alaska
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    Patience grasshopper, skill comes with practice! LOL Good luck!
     
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