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6-71 Detroit diesels

Discussion in 'Buy/Sell/Trade' started by Sigarm, Apr 23, 2016.

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  1. Sigarm, Apr 23, 2016
    #1
    Sigarm

    Sigarm New Member

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    Have a matched pair of aluminum block 6-71 Detroit diesels with Allison m20 trans port&starboard rotation for sale. these were rto when removed a few years back. These are very rare engines usually used in mine sweepers. Almost 1000lbs weight saving per engine. Located in Rhode Island 7500.00 obro
  2. Loren Schweizer, Apr 23, 2016
    #2
    Loren Schweizer

    Loren Schweizer YF Associate Writer

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    The coolest thing about YF is noodling around and discovering, serendipitiously, arcane items like this.
    Aluminum Jimmy blocks?
    Holy moly!
  3. Capt J, Apr 23, 2016
    #3
    Capt J

    Capt J Senior Member

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    Wow, I never even knew these existed. How much HP are they? What configuration? N's, TIs?
  4. RER, Apr 23, 2016
    #4
    RER

    RER Senior Member

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    Who Knew?

    Aluminum Block DD...
    71Aluminim.png

    Unicorn...
    unicorn.jpg
  5. K1W1, Apr 23, 2016
    #5
    K1W1

    K1W1 Senior Member

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    I did a bit of googling and there are a few DD's claiming to be Alu for sale
  6. Sigarm, Apr 23, 2016
    #6
    Sigarm

    Sigarm New Member

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    These are the standard inline upright configuration my local dd shop ran the numbers awhile back and told me they were military spec at 285hp with turbo when I ran them they were nat configuration with n80 injectors found out they were aluminum when performing some paint touch up tried a magnet and nothing that started me looking at what I was working with.
  7. Sigarm, Apr 23, 2016
    #7
    Sigarm

    Sigarm New Member

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    The picture of the pancake lay down version was in a Bertram next to me in the 1980s it's truly amazing what Detroit did with these 71 series
  8. dsharp, Apr 24, 2016
    #8
    dsharp

    dsharp Senior Member

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    We built a 45' Hatteras with a pair of the aluminum inclined models in the mid 70's. My Dad wanted a long range trawler before Hatteras built one so he stretched the hull 6' and added two 500 gallon tanks amidship. The boat is still running strong. 1600 mile range is nice. If you think a Detroit slings oil sitting upright lay them on their side and look out!
    !
  9. K1W1, Apr 24, 2016
    #9
    K1W1

    K1W1 Senior Member

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    You will not get a magnet to stick to Cast Iron either.
  10. P46-Curaçao, Apr 24, 2016
    #10
    P46-Curaçao

    P46-Curaçao Senior Member

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    That's what I thought too!
  11. tequesta ed, May 27, 2016
    #11
    tequesta ed

    tequesta ed New Member

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    What kind of magnets do you use?
  12. Sigarm, May 28, 2016
    #12
    Sigarm

    Sigarm New Member

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  13. Sigarm, May 28, 2016
    #13
    Sigarm

    Sigarm New Member

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    Don't know if there are any special type I used a pencil type I keep in my tool box it's been awhile since I sanded a small spot on the block it's still has shine and other areas the corrosion is a white powder the heads are definitely iron
  14. tequesta ed, Jun 1, 2016
    #14
    tequesta ed

    tequesta ed New Member

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    KIWL stated that a magnet won't stick to cast iron. What kind of magnet does he have.
  15. gmony, Feb 3, 2017
    #15
    gmony

    gmony New Member

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  16. Sigarm, Feb 3, 2017
    #16
    Sigarm

    Sigarm New Member

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    They are still available asking 3500.00 for the pair they have been sitting in my garage far to long. Pm me gmony
  17. baltimore bob, Feb 7, 2017
    #17
    baltimore bob

    baltimore bob Member

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    Where are you? I might know some folks who might be interested.
  18. Sigarm, Feb 9, 2017
    #18
    Sigarm

    Sigarm New Member

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    The detroits are located in rhode island. I always loved baltimore harbor spent some time in sparrowpoint too.
  19. baltimore bob, Feb 9, 2017
    #19
    baltimore bob

    baltimore bob Member

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    Let me see what I can do.
  20. Per K. Stene, Dec 9, 2018
    #20
    Per K. Stene

    Per K. Stene New Member

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    Hi! Are those engine still available?
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