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My Dauntless Ate A Valve.

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

  1. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Update. Moved over to the campground for a few days. I was waiting to pull the head because I knew we had to tow the Jeep down a dirt road to the campground. I put the oil pan back on with 4 bolts and the intake with 2 bolts.

    Here’s the head off.
    [​IMG]

    The package from Jackdog with the piston and valve arrived within 5min of me getting the old piston out.

    The FLAPS had a piston ring compressor for loan/rent. So this went in rather painlessly.

    Mint!!

    [​IMG]
     
    FinoCJ, locrwln, Fireball and 5 others like this.
  2. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Hows the combustion chamber look?

    The cylinder wall?
     
  3. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Valve is in.
    [​IMG]

    Getting the gaskets cleaned up.

    [​IMG]
     
  4. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    it’s all bad. But it will run.
     
    FinoCJ, colojeepguy, Norcal69 and 3 others like this.
  5. jzeber

    jzeber Well-Known Member 2022 Sponsor

    What an epic repair. Can't wait to get the updates.
     
  6. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Thanks again for the parts. So far so good.
     
    jackdog and Norcal69 like this.
  7. Jw60

    Jw60 That guy 2024 Sponsor 2023 Sponsor 2022 Sponsor

  8. Zoomer

    Zoomer eJeeper (walking)

    Good progress! What did you do about the valve seat? Wasn't in pretty mangled?
     
    Fireball likes this.
  9. Mjragan

    Mjragan Member

    Don’t know if anyone mentioned checking/cleaning the oil pump pick up screen before you bolt the oil pan back up. Tap the top of the valve with a hammer before you bolt the head back onto the block, it’s a quick way to check that the keepers are seated. Stand the head on its side while doing it, if the head is face down on a surface it could bend a valve.
    Great job, this trip is going make for some great stories in years to come.
     
    Buildflycrash likes this.
  10. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    I have a little grinding stone on a cordless drill. Tried to just hit the high spots. It’s going to have lots of blow-by.
    I removed the pickup and a little tray/pan above it. Cleaned both well.
     
    Lockman, Jw60 and Norcal69 like this.
  11. Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    I have run with worse. It won't be the fastest rig out there, but no shame in coming in last with this kind of handicap.

    Later model Buick 231 "Even Fire" engines are plentiful and pretty cheap.
     
  12. Steve's 70-5

    Steve's 70-5 Active Member

    I guess you checked the gap on the piston rings
     
  13. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Nice job Scott - Can't wait to hear that thing run!
     
  14. jeep peep69

    jeep peep69 Member

  15. Renegade ll

    Renegade ll Member

    Well Scott it will keep the mosquitos away.
     
  16. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    I got it back together and it ran. I have a video uploading now but it is very slow. It wasn’t warmed up and it ran pretty rough. The damaged right side is definitely louder than the left. I’ll get the fenders back on tomorrow and drive around a little. I’ll re-torque the head bolts and change the brand new oil. In a day or two.
     
    AKjeff, supertrooper and colojeepguy like this.
  17. colojeepguy

    colojeepguy Colorado Springs

    Yeah I think Buildflycrash might have to be the tailgunner for next week's trail runs :lol:
     
    Twin2 likes this.
  18. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

  19. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    That'll work!
     
  20. SoCalNickG

    SoCalNickG Member 2023 Sponsor 2022 Sponsor

    Very Good!:beer:
    Probably don't need to say it but, remember to change the filter with the oil.
     
    Buildflycrash likes this.