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My Dauntless Ate A Valve.

Discussion in 'Early CJ5 and CJ6 Tech' started by Buildflycrash, Jul 20, 2021.

  1. wheelie

    wheelie beeg dummy 2024 Sponsor 2023 Sponsor

    Bummer dude. It’s refreshing to see all the help offered by members here.
     
  2. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    That totally sucks. It may be field fixable. Frankly i think you could get a crane and swap the engine in less time. Theres got to be a running dauntless around
     
  3. jeepdaddy2000

    jeepdaddy2000 Active Member

    This.
     
  4. jackdog

    jackdog Member

    I've got spare pistons,rods and valve stuff if you need them.
     
    Buildflycrash likes this.
  5. colojeepguy

    colojeepguy Colorado Springs

    I'm about 2 hours away if there's anything I can do to help....
    Edit- I have an engine hoist you're welcome to borrow.
     
    Last edited: Jul 21, 2021
    Buildflycrash likes this.
  6. AKjeff

    AKjeff Member

    Don't forget to remove the ring ridge if you're thinking of reusing the rings.
     
  7. Steve's 70-5

    Steve's 70-5 Active Member

    If you pull the keep in your trailer I do not think you will be able to work on it because it will be real tight. So when you tear it down make sure you can get it in your trailer.

    I would pull the head and see what is going on. Fix the valve. If the piston does not have a hole in the top. Get some sandpaper sand/smooth any scratches in the cylinder wall. Put it back together and run it till you get home
     
    Jw60 likes this.
  8. I have a strong dauntless I could let go if you had a way to get it there from Missouri. Maybe someone going down I-70 could help. I'm only 30 miles off the interstate.
     
    Jw60, Buildflycrash, FinoCJ and 2 others like this.
  9. Norcal69

    Norcal69 Out of the box thinker 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I think this is 100% field fixable, but we need to know if there is a hole in the piston.
     
    timgr likes this.
  10. SoCalNickG

    SoCalNickG Member 2023 Sponsor 2022 Sponsor

    Scott, Sorry to read this. I can only offer moral support from here.
    If you are working on this in a camp ground or parking lot, roll the Jeep onto a blue tarp before you start pulling parts. Any small parts dropped will be easier to find. IME small parts always get dropped.
     
    Geo likes this.
  11. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    There are folks coming that way but I think I’d be out of time to swap it by the time they roll thru. Sending you a message.
     
  12. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    I’m 95% sure the piston is broken. I’ve actually been driving it a little today. Smoking and low power but it’s really not awful.
     
  13. Jw60

    Jw60 That guy 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Don't do that. :gaah:

    As far as we know it can be rebuilt, if the rod goes through the block it can't be rebuilt.
     
    AKjeff likes this.
  14. Norcal69

    Norcal69 Out of the box thinker 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Gotta admit….. I admire your lack of quit! :sneak:
     
  15. Glenn

    Glenn Kinda grumpy old man Staff Member

    I'd be extremely worried about ruining that cylinder wall.
     
    AKjeff likes this.
  16. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    WHY????
     
  17. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    that is only if someone is trying to save the block....maybe if the end goal is a 4.3v6 or something, it might help expediate the process....?
     
  18. Glenn

    Glenn Kinda grumpy old man Staff Member

    I believe there's a good chance it would. :D
     
    Jw60 and 3b a runnin like this.
  19. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Yesterday morning I was in Moab. i wheeled the whole Poison Spyder trail. It wasn't until I got to Colorado that I looked at the engine. It was darn hot in Moab I could hardly wait to get out of there.
     
  20. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    My truck is in the local shop (diesel exhaust filter) and that is how I got back down to camp. Towed it up drove back down the hill.