Vintage low speed diesel for steel St. Pierre Dory

Discussion in 'Diesel Engines' started by skip walker, Dec 24, 2017.

  1. makobuilders
    Joined: Feb 2009
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    Location: Atlanta, USA

    makobuilders Member

    Good morning Skip Walker and happy holidays.

    It is a bit confusing what you're looking for here. Do you just want a good engine to install, in which case the obvious answer is just to install a modern little 3000 rpm Yanmar or similar, or is your purpose to follow your dream with an antique-styled launch with an old-fashioned single cylinder, slow speed or steam engine turning at a couple hundred rpm? Totally different needs and totally different solutions.
     
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  2. skip walker
    Joined: Dec 2017
    Posts: 10
    Likes: 1, Points: 3
    Location: fort lauderdale

    skip walker Junior Member

    After looking far and wide, I wanted to know what you folks think of the Yanmar YSB12, It is kind of the best of both worlds. Old style, but parts are available, almost no vibration compaired to the YGM10, and at 1500 rpm, wich would be hull speed, it might be the ticket.
     
  3. Lepke
    Joined: Sep 2015
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    Location: Oregon to Alaska

    Lepke Junior Member

    I'm 70 and I've run many slow turning diesels. All the ones small enough to fit your boat are collectors items. Parts are made as necessary in a machine/foundry shop. They are heavy and large for their hp. But they are economic and run for decades. I don't like any new electronically controlled marine diesels. None are reliable. I think the post about Chinese or Indian made engines are the best sources. I know of one Indian maker of steam engines.
     
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  4. PAR
    Joined: Nov 2003
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    I disagree in that the new diesels are unreliable, as statistics prove this quite incorrect. They are a little different and you do have to keep up with the times, but name any industry that doesn't require this too. I tend to stay away from power adders on small diesels, but I'm old school too. The electronics packages are robust and very tuneable, though you do have to get your head around what's required. I have a modern FI gas engine that I can dial down to 225 HP or up to nearly 500 HP. Naturally the engine at 500 HP isn't going to hold up long, but it does so without complaint, other than needing really good fuel. Literally a push of a few buttons. She's currently setup with a tuner that permits 4 modes; economy (lowest setting), RV (not much more HP, but a big jump in torque), performance (a hundred more HP, about the same torque as RV) and race, which offers all it has, for as long as it'll last. Literally a button on the dash is all it takes. Try that with an old Lister at half the weight too. It's pretty to get behind on the evolution of engines and equipment, but just ask any Harley owner if he'd trade his EVO or newer engine for a shovel or older engine as see what happens. Some like oil leaks and modest power and reliability, while most admit, screw the oil leaks and give me electronic ignition, FI and 100K reliability, please.
     
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  5. nemier
    Joined: Jan 2004
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    Location: North Vancouver, Canada

    nemier Specialist in long-range Expedition Yachts

    Hi Skip,
    If she was my St. Pierre Dory, I'd fit a smaller modern engine in her. I have two suggestions, and both are robust and proven.
    no. 1. Yanmar 2YM15 14HP / 570cc / 24.2 HP/L
    no 2. BETA 14 13HP / 479cc / 27.8 HP/L

    Either of these guys will provide reliable service, and after all, isn't that what it's all about? I went for the Yanmar as number one, because of your US location. Over in Europe, I would have suggested the Beta. Parts and service for both are available worldwide.

    Let us know what you end up going for. : )
     
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  6. JosephT
    Joined: Jun 2009
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    Location: Roaring Forties

    JosephT Senior Member

    I like both the YSB12 & 2YM15, favoring the latter as it is a bit easier on motor mounts. That means less wear & tear on driveshaft seals. Here is one purring like a kitten. Keep us posted on your project.

     
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  7. skip walker
    Joined: Dec 2017
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    Location: fort lauderdale

    skip walker Junior Member

    I want one of those, but probably wont be for this boat. I should find a hurricane damaged sailboat for free and build a Mad Max apocalypse vessel lol
     
  8. skip walker
    Joined: Dec 2017
    Posts: 10
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    Location: fort lauderdale

    skip walker Junior Member

    Ok, so thats two votes of confidence for the 2YM15. I will start contacting suppliers in Fort Lauderdale to find a good price with all included. Any advice on buying a complete setup? Piece it out, or buy from one place?
     
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  9. JosephT
    Joined: Jun 2009
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    Location: Roaring Forties

    JosephT Senior Member

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  10. skip walker
    Joined: Dec 2017
    Posts: 10
    Likes: 1, Points: 3
    Location: fort lauderdale

    skip walker Junior Member


  11. JosephT
    Joined: Jun 2009
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    Location: Roaring Forties

    JosephT Senior Member

    Their sales manager is probably out sailing. It's high season in the Caribbean you know :) If you're just looking for a quote I would contact Yanmar directly. They've got an office in St. Pete. Ask for alternate distributors in the region as well if In-complete Yacht services isn't doing the job.

    Contact us - Yanmar Marine http://www.yanmarmarine.com/Contact-us/
     
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