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trawler repower

Discussion in 'Technical Discussion' started by travler, May 13, 2009.

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  1. travler, May 13, 2009
    #1
    travler

    travler Senior Member

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    the trawler i currenty own and run has a cat 3408 /405 continus hp ,i am thinking about repowering with a cat c18 with about the same hp , any thoughts would be helpfull i think there is a wealth of knowlege on this forum
    thanks travler
  2. Capt J, May 13, 2009
    #2
    Capt J

    Capt J Senior Member

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    The CAT C-18's are a good engine, but not sure if they are best suited to a Trawler application. What engine does CAT recommend? I know that the Cummins KTA19-M3's are great engines for a trawler situation and have run one in a Northern Marine
  3. travler, May 13, 2009
    #3
    travler

    travler Senior Member

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    this is what cat recomends it seames to have replaced the 3408 , in most off road equipment and from our experiance it is more fuel efficent than the V8 , i am still in the think process

    travler
  4. Capt J, May 13, 2009
    #4
    Capt J

    Capt J Senior Member

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    Well I can say that the C18 is a great durable engine. There is another thread on engine questions and several people have 5,000-10,000 hours on gen sets with c18's. Parts are very reasonable, they run very clean, are very torque and you have worldwide coverage. The Cummins in this Northern Marine has been from Vancouver to Ft. Laud, to Ny, back to Vancouver, Back through the Panama Canal, and South America, then up to Ft. Laud with no issues.
  5. K1W1, May 14, 2009
    #5
    K1W1

    K1W1 Senior Member

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    Hi,

    The C 18's I wrote about earlier on another thread were actually originally specified as 3408's.

    It was a departure from the norm for the yard that used them and they continue to use them as their Genset Engines- 19 sets since they changed
  6. JWY, May 14, 2009
    #6
    JWY

    JWY Senior Member

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    Is the vessel a trawler or a "fast trawler?"

    I recently had a client replace twin Cat 3126s on a GB 46 with new, similar model. Although he allowed for the "x" factor, the costs were exorbitantly more than estimated and the time estimate was off by 4 months. Yard and Cat supplier coordination on responsibilities and timing were factors in both.

    Be prepared.

    Judy
  7. Loren Schweizer, May 14, 2009
    #7
    Loren Schweizer

    Loren Schweizer YF Associate Writer

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    You'd think a 3408 rated continuous would run for a jillion hours.
    Why the need to replace?

    As Judy points out, replacing a motor that is different than it's predecessor always, always costs more than you think it will...the mounts/foundations/tranny dimensions differ slightly making shaft alignment a bear, not to mention repropping...a veritable Pandora's Box, if you will. And, then there are the Human Factors (screwups & miscommunications) that weigh in.

    Good luck, Bub!
  8. travler, May 14, 2009
    #8
    travler

    travler Senior Member

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    thank's

    judy it's a deep draft slow boat we cruse at 8.5 knt's

    the cat that is in the boat now is original we have been all over the world with it it now has a little over 10,000 hrs since it's last in frame , so the eng need's to come out to do a real overhaul , i am going to replace the gen set's also as they have over 40,000 hours on them , after consulting with cat they think the same gear box and prop combo will work just fine
    travler
  9. travler, May 14, 2009
    #9
    travler

    travler Senior Member

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    captJ

    what was the average fuel conssunption on the northern marine with the cummins ,and was it a kt 19 19 with twin turbos

    travler
  10. Capt J, May 14, 2009
    #10
    Capt J

    Capt J Senior Member

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    I was doing some work on the boat today, it's a KT19-M3. Single turbo I think. I've run the boat before and honestly I can't quite remember, but it wasn't that much fuel. I'll try to remember and ask them. The engine has 2,000hrs so far and hasn't had an issue.
  11. K1W1, May 15, 2009
    #11
    K1W1

    K1W1 Senior Member

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    Hi,

    Have you considered a reman 3408?
  12. travler, May 15, 2009
    #12
    travler

    travler Senior Member

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    yes i have ,
    thanks for asking one of the questions that keeps popping in my minde is wiil all new machinery and any value to the boat when i go to sell /trade for some thing diffrent i accutaly have an electronic huei setting in our shop that
    could be reconfigured to a marine application with out much work

    i am also very fortunate to have a very good engineer that has been with me for many years , we did a repower on a previous boat we had and relising it is a lot of cost /hard work the end resault was very good

    thanks travler