Lightweight diesel for power boat

Discussion in 'DIY Marinizing' started by Monne, Feb 16, 2008.

  1. Monne
    Joined: Feb 2008
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    Location: Sweden

    Monne New Member

    Hi all,
    I'm been looking for an answer on the question but I can't really find a clear one! Hopefully I can get some straigtforward tips?

    Aiming at building my own alu power boat.

    Which engine would best fit this description. The engine should be proven in marinizing with kits or parts to buy:

    - Diesel
    - Lightweight
    - 120-160 hp
    - Modern tech, meaning not from 1970
    - Cheap to buy at car dump, meaning not from 2008
    - Proven tech
    - Fit with Volvo or Mercruiser stern

    Where to buy kits and/or parts for the job? I'm not intrested in putting a car-repair garage in work...

    Björn H
    Sweden
     
  2. Kay9
    Joined: Oct 2006
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    Location: Central Coast Oregon US.

    Kay9 1600T Master

    Just about any of the small marine diesels fit this bill. Yanmar, John Deer, Volvo, Detriot.

    K9
     
  3. CDK
    Joined: Aug 2007
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    Location: Adriatic sea

    CDK retired engineer

    look at lancingmarine.com. The most logical choice would be a Ford Transit 2,5 ltr with or without turbo charger. With parts from Lancing it can be marinized into a 140 HP turbo diesel that fits the stern drive of your choice. The manifold you can also buy from Mesamarine : it is much cheaper there and you do not have to pay taxes. Goods are shipped from the UK factory directly to you, the invoice comes from the US.
     
  4. fcfc
    Joined: Feb 2005
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    Location: france,europe

    fcfc Senior Member

    There is also http://www.drinkwaard.com/layout.php4

    But I think the problem is more complex than what you think.

    Common rail diesel are a no go to marinize for small companies. And even less from a homebuilder.

    So the question remain what is the engine

    - Diesel
    - Lightweight
    - 120-160 hp
    - NOT ELECTRONIC CONTROL
    - Cheap to buy at car dump, meaning not from 2008
    - Proven tech

    And only after you have found this engine, try find a marinization kit. The hard part is not finding the marine parts, but the engine...

    Now, for electronic control, Volvo D3 is a marinized car engine. Yanmar 4BY is BMW car marinized, and volksvagen TDI 150-5 too. But none are small comanies, and none sell parts only. That should give you an idea of marinizing costs for modern (common rail) diesel engines.

    Note the lancing marine engine, although a recent ford engine (4 valve / cylinder), is not the common rail version, but mechanical direct injection version for turkish market.
     
  5. slundell
    Joined: Feb 2008
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    Location: Sweden

    slundell New Member

    Hi Björn,

    I've too been thinking about marinising a modern, light-weight common-rail diesel. I've been looking on the D5244T4 which powers Volvo V70 and XC90. Its a 185Hp, aluminum, common-rail, turbo charged and light-weight engine. It seems to be a "standard" engine, so spare parts should be available for many years.

    Its the engine that Volvo Penta D3 is based on (If I my googling serves me right).

    I have been in contact with a workshop in Gothenburg that have some experience in marinising these engines. He builds all the hardware that is needed, including adapters for your stern drive. The main remaining problem will be the software. It needs to be modified to ignore all the sensors you can not use in a boat, e.g. catalysator temperature. The immobiliser also needs to be circumvented somehow.

    I have some info (only swedish right now) on my blog: http://www.familjenlundell.se/simon/

    Best regards,
    Simon
    Sweden
     
  6. slundell
    Joined: Feb 2008
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    Location: Sweden

    slundell New Member


  7. GACD
    Joined: Apr 2008
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    Location: New Zealand

    GACD New Member

    Nissan QD32 option

    Last year I converted my 20 foot Fi-Glass Viscount to diesel. Previous engine was a Mercruiser 165 HP based on a GM250. Replaced this with a marinised Nissan QD32. Also relaced the mercruiser leg ,ratio 1.62:1 with a Sterndrive Engineering (SEI) unit,1.94:1. Prop was a Propulse. I have not altered the prop pitch post conversion. The Nissan QD32 is non turbo and 3.2 litres. Puts out 110 HP at 3600 RPM. Top speed before conversion was 29 knots. Max speed after conversion is 24 knots. I normally cruise at 18 - 20 knots. Very happy with conversion. Economy and reliability significantly increased. These engines are bullet proof. The engine was converted in Auckland by Chris Moon Engines who used DIECON (Australia) components ie Combined heat exchanger exhaust manifold and bell housing. The Fi Glass Viscount has a 20 degree deadrise which was an important facit in the conversion as any greater deadrise would have required more horsepower.
     
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