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Detroit Diesel In A Cj3b?

Discussion in 'Builds and Fabricators Forum' started by Mr Vaughan, Dec 26, 2020.

  1. Mcruff

    Mcruff Earlycj5 Machinist

    I may be loud but it’s still the sweetest sounding diesel ever made. Nothing sounds as cool as a screaming Detroit.
     
    73 cj5 and fhoehle like this.
  2. sterlclan

    sterlclan Member 2024 Sponsor 2022 Sponsor

    For about five minutes.
     
    dozerjim, fhoehle and Fireball like this.
  3. Glenn

    Glenn Kinda grumpy old man Staff Member

    Well, it does drown out the sound of one crying when he's driving a White with a 238 giving all it's got on a grade and a Pete with a 270 Cat (wasn't even working hard) passes and is soon out of sight. That was me hauling rock....crying because I could have bought a Pete just like it. That was 45 years ago and I'm still mad at myself for buying the White because it was cheaper.
     
    dozerjim and fhoehle like this.
  4. Mcruff

    Mcruff Earlycj5 Machinist

    What engine is a 238?
    If buying a Detroit if you want power make sure it’s a turbo model.
     
  5. possible idea: take the 3 speed chevy and a sbc and swap it into the 5, then take the fhead and put it into the 3b. it would take shipping stuff quite a way tho, and no detroit.
     
    fhoehle likes this.
  6. Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    That sounds like a more doable plan. As for shipping, that's an excuse for a road trip.
     
    fhoehle likes this.
  7. we're getting a little s10 fixed up right now, would be perfect.
     
    Downs, Fireball and fhoehle like this.
  8. Norcal69

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

    Your best idea to date.....
     
    fhoehle and Downs like this.
  9. 47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    Send it to mcruff so he can fire it up full throttle and listen to that sweet screaming eardrum destroyer.
     
    fhoehle, Rich M. and dozerjim like this.
  10. Mcruff

    Mcruff Earlycj5 Machinist

    Oh hell ya! Used to run a fork lift back in HS that had one in it and several flat beds with them in it! Love that sound!(y)
     
    fhoehle and SFaulken like this.
  11. Glenn

    Glenn Kinda grumpy old man Staff Member

    6-71, 318 is 8-71.
     
  12. Glenn

    Glenn Kinda grumpy old man Staff Member

    I do admit I have a soft spot in my heart for the sound of a wound out Detroit, 318 is what the Pete's had that we used on Guam. The Brockway's had 220 Cummins.
     
    fhoehle likes this.
  13. 73 cj5

    73 cj5 Not ready for the junkyard yet

    Back when I was helping my cousin on the pipeline moving mats there was a guy that had a Freightliner? COE truck with a 6v53T Detroit. There is no other sweet sound like it and it could heard from a half-mile away. The truck was originally decked out for towing but it was too light and the front end would lift off the ground when picking up other trucks so he got it on the cheap. I also had a great uncle who drove a Pete with a Detroit. I'd love an old Mack B series with a Detroit.

    [​IMG]
     
  14. sterlclan

    sterlclan Member 2024 Sponsor 2022 Sponsor

    the generator at work has a v12 detroit twin blowers and turbos
     
    fhoehle and Glenn like this.
  15. Mcruff

    Mcruff Earlycj5 Machinist

    Unless you are talking horsepower a 6-71 is 426 ci an 8-71 is 568 cubic inch. A 6-53 is a 318 ci engine. I’ve never heard of Detroit’s being listed by hp only displacement with a T for turbo. A Detroit 2 stroke will not run without its roots supercharger. In the real world a Detroit with its roots supercharger would be considered a normally aspirated engine, the turbo would then add boost on top of that.
     
    73 cj5 likes this.
  16. jackdog

    jackdog Member

    When I worked as a Detroit mechanic we would dyno test the new rebuilds. Most were 8V71s. The exhaust was two 4" straight pipes out of the building. It would really wake up the neighborhood at 7am when we would put them thru their paces.
     
    dozerjim, fhoehle and Fireball like this.
  17. :bananatool::twist:
    the devil himself fears this man.
     
  18. Mcruff

    Mcruff Earlycj5 Machinist

    The proper way to run and shift a Detroit 2 stroke.(y)
    Mount the pedal to the floor and hang on.

     
    Glenn, fhoehle and Fireball like this.
  19. sterlclan

    sterlclan Member 2024 Sponsor 2022 Sponsor

    She forgot to slam her hand in the door.
     
  20. jackdog

    jackdog Member

    My 1st road tractor was a GMC Astro with a a 318(8V71) with a 13 speed transmission. The best way to run it was wide open at 2400 rpms and start down shifting when you saw a hill coming.
     
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