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Destroyed Engine

Discussion in 'Early CJ5 and CJ6 Tech' started by Needs Help, Sep 22, 2021.

  1. Sep 24, 2021
    Needs Help

    Needs Help New Member

    Utah
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    Sep 22, 2021
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    8
    Thank you very much!

    Tim
     
  2. Sep 24, 2021
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    Jan 23, 2014
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  3. Sep 24, 2021
    Jw60

    Jw60 Perfectly Within Tolerance 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Sedalia MO.
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    Apr 8, 2008
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    2,320
    Sorry for your motor.

    Did the instructions from the previous owner match what is generally accepted here:
    Flat Towing Guide

    I don't normally pull the rear drive shaft myself but if you have anything in the jeep when flat towing you should pull the drive shaft.

    I leave the transmission in high and transfercase in neutral and 2wd
     
  4. Sep 25, 2021
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2021 Sponsor

    East Tennessee
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    Feb 8, 2021
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    540
    Something was in gear.

    I haven't flat towed a Jeep in over 30 years but used to tow one up to our hunting camp which is a 100 mile drive. The old Jeep I had then did not have locking hubs, so I always removed both driveshafts, and taped the bearing caps so they wouldn't fall off.

    If you end up buying a used engine be aware that engines out of 1982 up Buicks have computer controlled distributors and carburetors which have to be replaced by earlier versions.

    That is a very nice looking Jeep, sorry for your mishap.
     
  5. Sep 25, 2021
    Alan28

    Alan28 Well-Known Member 2021 Sponsor 2020 Sponsor

    Ch√Ętillon en...
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    Oct 21, 2012
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    2,300
    That's strange that the engine was connected to the wheels. Maybe gearbox and transfer box can be damaged too.
    If the Jeep is in neutral it is not dangerous in my mind. maybe by mistake the gear lever was pushed.
    I understand that if all is deconnected from the wheels, it becomes a trailer.
    There is also a limit to the speed.
     
  6. Sep 26, 2021
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2021 Sponsor 2020 Sponsor

    Denver, CO
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    Jul 18, 2013
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  7. Sep 26, 2021
    Needs Help

    Needs Help New Member

    Utah
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    Sep 22, 2021
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    8
    Yes sir, I towed it the exact same way the seller instructed. The first trip up was 95 miles and without incident. The trip where the failure happened was 20 miles from where I started. I will use a trailer from now on for sure.
     
    Jw60 likes this.
  8. Sep 28, 2021
    Needs Help

    Needs Help New Member

    Utah
    Joined:
    Sep 22, 2021
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    8
    So after some more digging it looks like I have a 4.1 V6 with a 500 CFM Edelbrock Carb and fuel pump connected to a GM 465 4 speed transmission, Dana 18 Transfer Case with a Warn Overdrive. I assume that based on that info, any 1980-1984 4.1 work work?

    Thanks in advance for any help offered.

    Tim
     
  9. Sep 28, 2021
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2021 Sponsor 2020 Sponsor

    cordele, Ga.
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    Mar 29, 2007
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    From your pic of engine it looks like a even fire 231 V6 to me. Very nice jeep. Love your log structure.
     
    Twin2 likes this.
  10. Sep 28, 2021
    Needs Help

    Needs Help New Member

    Utah
    Joined:
    Sep 22, 2021
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    8
    Thank you!
     
  11. Sep 28, 2021
    Fireball

    Fireball Well-Known Member 2021 Sponsor 2020 Sponsor

    Pullman, WA
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    Feb 9, 2018
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    The 4.1 is a somewhat rare larger bore 231 produced from 1980-1984. Buick V6 engine - Wikipedia

    You might have better luck finding a 231 to replace it. They are externally interchangeable.
     
  12. Sep 29, 2021
    AC Bill

    AC Bill New Member

    Vancouver Island BC
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    Sep 18, 2021
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    13
    What a drag. So you never did get to drive it?
    So somehow the engine was spinning when being towed, and it threw a rod, (or two) by the sounds of it. Transfer case still engaged, and tranny in gear. Must have been in a lower gear, and it over-revved it?
     
  13. Sep 29, 2021
    Maddevill

    Maddevill Member

    Shingletown CA
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    Oct 3, 2019
    Messages:
    97
    S&J are awesome. I got a long block for my Dodge Ram. Outstanding workmanship. I heartily
    recommend them.

    Mad
     
    dnb5853 likes this.
  14. Sep 29, 2021
    Needs Help

    Needs Help New Member

    Utah
    Joined:
    Sep 22, 2021
    Messages:
    8
    I got to drive it down the driveway to my truck after I could bend my knee enough to get in to it. I'm thinking it must have over-revved like you say. Definitely an expensive lesson to learn.
     
  15. Sep 29, 2021
    WestCoastPat

    WestCoastPat Member

    Joined:
    Nov 1, 2015
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    And S&J also has a bunch of good videos on their web site.
     
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