Good diesel repower options for 26 cuddy?

Discussion in 'Diesel Dudes' started by Samuel Zeilman, Oct 20, 2020.

  1. Samuel Zeilman

    Samuel Zeilman New Member

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    Hey all
    Looking to repower a 26 cuddy with a diesel. Possible 6bt? 6lpa? Any insight on your set ups?
     
  2. joel@vomhoko.com

    joel@vomhoko.com Well-Known Member

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    Several of us with 26ers are running the Cummins 6bt and love the simplicity, fuel efficiency and great range for offshore runs. Just don't expect to break any speed records.
     
  3. Mistress

    Mistress Well-Known Member Staff Member Supporting Captain

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    The stock engine is the 6BT.

    A higher revving engine might be a better pleasure choice as what I see as a shortcoming is the limited speed window. But I fish for species that 2 knots +/- is the norm, not the 5 knot idle I get.

    The negative of higher revving diesels is the reduced longevity and their dislike of slow/trolling rpm's for lengthy periods. Though no diesel really likes it, the 6BT is rather tolerant.

    It is a tight fit lenghtwise.
     
  4. mako2

    mako2 Well-Known Member

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    I had posted this previously. I don’t know any thing about the engine other than what is listed in the spec sheet. However looking at that it may be a viable option for a re-power. It is a low rpm engine.

    Below is a link to a spec sheet for a 4 cylinder John Deere marine diesel model 4045SFM85 which puts out 275 hp at 2600 rpm or 315hp at 2800 rpm.

    https://www.deere.com/assets/pdfs/c...nes-and-drivetrain/specsheets/4045SFM85_1.pdf
     
  5. Kjorah

    Kjorah Member

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    upload_2020-11-8_20-21-34.jpeg This is my bt220 did last summer it was a 350 before
     
    joel@vomhoko.com and redneck like this.
  6. Mistress

    Mistress Well-Known Member Staff Member Supporting Captain

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    What trans is that?
     
  7. Kjorah

    Kjorah Member

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    Zf63 1.2:1 down angle give you a lot more room under pan. 17” prop 2000rpm 17 knots
     
  8. Jersey Drape

    Jersey Drape Well-Known Member

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    Are you guys sitting noticeably lower with the Cummins in there or does she float it well?
     
  9. Kjorah

    Kjorah Member

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    You can’t tell it’s only 500 lbs difference.
     
  10. Mistress

    Mistress Well-Known Member Staff Member Supporting Captain

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    It's fine and where you'd want the weight to be.
     

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