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  • Marine Diesel Economy - What's the best

    I was wondering what some of your experiences have been on the fuel economy for the smaller marine diesels. Something that would fit in a boat like the Glacier Craft or maybe a Seasport. I have heard real good reports about the John Deere marine series and the Lugger Marine Diesels.
    I have also heard some very good reports about the Yanmar marine series.
    How stupid is it to be wasting tons of salmon and halibut as bycatch in the Bering Sea and then have the coastal villages hollaring they have no food? It's got to stop!

  • #2
    Bsfc

    A simple way to compare the fuel economy of one engine to another is to get the engine data sheet and look at the brake specific fuel consumption (BSFC) figures. It's a very competitive market, so you will find comparable engines to have very similiar BSFC numbers. Sometimes, in certain horsepower or marine engine ranges you will find one engine that may stand out from the rest.

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    • #3
      33ft. custom boat i sold 15 months ago burns <7 @20-21kts. twin yanmar 230hp each
      RETIRED U.S.A.F. CAPT.; LIFETIME MEMBER NRA; LIFETIME MEMBER ALASKA BOWHUNTER ASSOC.
      MASTER BOWHUNTER EDUCATION INSTRUCTOR; MEMBER UNITED BLOOD TRACKERS; POPE & YOUNG MEASURER

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      • #4
        Skeptical about John Deere...

        Friend of mine (in Homer) re-powered his 38' Delta; got rid of his old cummins 555 (I think) in favor of a JD; whoever sold him the engine told him it'd burn less gph, would be quieter, and he'd gain a knot or two top end. He's very disappointed as the JD performs dismally in all areas compared to his old engine. He's burning a third to twice as much fuel, the engine is way louder, and the boat is not any faster. He spent big $$$ on a big mistake.
        Jim
        Check out Quickwater Adventure water taxi/transport services: https://www.facebook.com/pages/Quick...37553606260978

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        • #5
          we all have the stories about...

          Whenever someone says your going to gain this and that and save this and that, something is wrong!

          I have a seasport and am on my 6th engine, 1 gas and 5 diesels. Stick with volvo, it is the lesser of all evils or is it wevals.

          Deisel lets you be more feul efficiant with a load, if you boat on weekends get outboards, if you do charters/light commercial fishing frieght runs, haul drift wood for heat, get diesel.

          stay away from merc and yanmar combos.
          Providing trips for multilpe species for over 20 yrs
          www.kodiakcombos.com

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          • #6
            Cascade Engines in WA

            Give them a call if you decide to go with a Yanmar diesel. Tim Sandeman is the guy U want to talk to at: 206-764-3850.

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            • #7
              Whats up with the Yanmar combo's?

              A friend is considering a Yanmar/Bravo 3 combo for a re-power on a 25' fiberglass 11,000 boat (single power). Would like to know the opinions on this.
              Kodiak, what other engine packages have you run (diesels)? It does seem like Volvo is the way to go but he doesn't like the new ones as they have all electronic controls & computers.
              He's currently running a 210 hp Cummins with a Stern Power outdrive, piece of junk setup. The drives keep breaking, he's got 3 drives and can only get a few fishing trips out of the boat until something gives. Think the boat is pretty heavy and underpowered (will not get on plane with only 210 hp). Heard the new Bravo 3 drive (diesel version) is rated for over 500 hp?
              thanks,
              Jim
              Check out Quickwater Adventure water taxi/transport services: https://www.facebook.com/pages/Quick...37553606260978

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              • #8
                Originally posted by Big Jim View Post
                A friend is considering a Yanmar/Bravo 3 combo for a re-power on a 25' fiberglass 11,000 boat (single power). Would like to know the opinions on this.
                Kodiak, what other engine packages have you run (diesels)? It does seem like Volvo is the way to go but he doesn't like the new ones as they have all electronic controls & computers.
                He's currently running a 210 hp Cummins with a Stern Power outdrive, piece of junk setup. The drives keep breaking, he's got 3 drives and can only get a few fishing trips out of the boat until something gives. Think the boat is pretty heavy and underpowered (will not get on plane with only 210 hp). Heard the new Bravo 3 drive (diesel version) is rated for over 500 hp?
                thanks,

                Jim
                I've had the DP290 with a volvo 350hp gas, then switched the gas for a volvo ad41p with very good results, then was told I would get more power, better feul and longer lasting results with a merc 4.2 detronic with bravo 2X the engine blew at 1200hrs, couldnt get my money back and with a lawyer was able to get a replacement, but that blew at 1200hrs. I put a yanmar in with a new bravo 3X and the outdrives would go out 3times a year, then 5 times before I took out a loan for a volvo D4 225. top speed with yanmnar was 38 knts, top speed with D4 is 33knots and burning half the fuel. I packed 6 55 gal drums on deck with 100gals below and still cruised at 25knts with the D4. My seasport is a coho XL 24, it has a 800# fish hole in the back, a 1000# fish hole in the front, I also put 1000# in 2 totes on deck when the bite is on.Electronic controls are intimidating at first, then they grow on you, once you learn how to override them or reprogram them, very nice!
                Providing trips for multilpe species for over 20 yrs
                www.kodiakcombos.com

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                • #9
                  akfishnut - most success for Seasports are with Volvo D4s that is what all the charter guys in Sitka are running. Not much history with the new mercruiser/cummins yet.

                  BigJim - your friend was lied to by the dealer - a 38' delta if it isn't a planing hull (some deltas are planning hulls) he should have been sold an engine that can get it to hull speed and if his engine is larger than the old one he shouldn't be running at a speed that moves his boat faster than hull speed. There are a lot of John Deeres running down here in Southeast on Trollers, Gillnetters, and Seiners that are working out great. A displacement boat won't really go much faster no matter how much fuel and hp is thrown at it.


                  To everyone,
                  Sterndrive diesels live a hard and sometimes short lives because they are run hard and not given sufficient time to cool down. My father in-law who is a marine surveyor has seen it all. The 4 things you can do to make your diesel sterndrive last other than change the oil is 1)power up and down slowly ie don't mash the throttles, 2)run the motor at cruise no higher than the duty rated rpm suggests and run it less if you can 3) allow the motor to idle a few minutes before you shut down to let the whole engine and turbo cool down when you reach the fishing grounds or dock/anchor and 4) for recreational guys run the boat, many unused diesels corrode away waiting to be run.

                  KodiakCombo is right, if you are a weekend warrior pencil it out and outboards will be cheaper. You have to be putting in a thousand hours plus to make it pay. I run a lot and I only put some 200-300 hrs a year on my mains.

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                  • #10
                    yanmar alone

                    The yanmar 6LPA 315hp is a high performance diesel, it is an awesome engine that is light and fires right up and just flat out screams, and thats what it is designed to do. The manual is plain and correct, you are not to idle it or even run it at low RPM, it is ment to be screaming! and when you have to run lower than full throttle you have to run it WFO for a given time, also after you cooled it down, you have to "race" the engine, meaning take it out of gear and blast the throttle several times before shutting down. I sold that yanmar with 2700hrs on it and it was going strong. The AD41 was running fine when I took it out 5700hrs, the D4 has 982hrs since Feb 2008.
                    Providing trips for multilpe species for over 20 yrs
                    www.kodiakcombos.com

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                    • #11
                      I re powered my Bayliner 2859 with a Volvo D4260 DPH and love it. The old engine was a Cummins (I love the Dodge Cummins) that was a piece of junk with only 360 hrs. The Volvo was 250 lbs less, quieter, way more power & speed and the fuel consumption is about 4 gph less at the same speed.
                      Retirement Plan - Having Fun and Still Learning

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                      • #12
                        Kodiak,

                        Do you have an idea what your boat weighs (full fuel, clients, gear)? Also, which outdrive from Volvo are you running with the D4? I think they have an assortment of drives to choose from.
                        Thanks for your input & honesty about the Yanmar/Bravo combo as that setup is what my buddy is looking at (there's been a few popping up used on craigslist for Hawaii). He just can't afford a brand new re-power package as he a serious recreation, semi-commercial fisherman (no charters, fishes about 6 or more times a month) and his 25' boat is sitting in the driveway getting covered in cobwebs (he has a 19' boat that he uses regularly).
                        I'm a fan of volvo diesels as I used to deckhand on a couple boats that had the ad41's with DP drives and I've seen those packages go 10k hours (with religious maintenance).
                        Jim
                        Check out Quickwater Adventure water taxi/transport services: https://www.facebook.com/pages/Quick...37553606260978

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                        • #13
                          Theres a blurb in Febs Fish Alaska mag about FNM diesels, they seem to like them.

                          He says he has two on a 30 Almar, 5.5 gals/hour at about 30 knots, the 250HP is $15k

                          There's also an ad for an Alaskan dealer for them
                          http://www.alaskan-adventures-unlimited.com/
                          2696 Sea Raider Pilothouse
                          "Dominion"

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                          • #14
                            Lugger Marine Diesel? Anyone run them?

                            Anyone have any experience with the Lugger Marine Diesels. How do they hold up? I have heard a lot of commercial boats have pretty good luck with them.
                            How stupid is it to be wasting tons of salmon and halibut as bycatch in the Bering Sea and then have the coastal villages hollaring they have no food? It's got to stop!

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                            • #15
                              Originally posted by Big Jim View Post
                              Do you have an idea what your boat weighs (full fuel, clients, gear)? Also, which outdrive from Volvo are you running with the D4? I think they have an assortment of drives to choose from.
                              Thanks for your input & honesty about the Yanmar/Bravo combo as that setup is what my buddy is looking at (there's been a few popping up used on craigslist for Hawaii). He just can't afford a brand new re-power package as he a serious recreation, semi-commercial fisherman (no charters, fishes about 6 or more times a month) and his 25' boat is sitting in the driveway getting covered in cobwebs (he has a 19' boat that he uses regularly).
                              I'm a fan of volvo diesels as I used to deckhand on a couple boats that had the ad41's with DP drives and I've seen those packages go 10k hours (with religious maintenance).
                              Jim
                              I want to say DPH-A, what I did was ask the guys who have been takin care of my volvos at Kodiak Diesel what one I needed, they know I put 1200hrs a year on the boatand use it to carry 2-3 thousand pounds of cod 68 miles to Kodiak. New my boat used to weigh 4600#s light. Loaded for charter work I'd say 7000#s, loaded for commercial fishing 10000#s
                              Providing trips for multilpe species for over 20 yrs
                              www.kodiakcombos.com

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