Kubota Z482 (13hp) marinization

Discussion in 'DIY Marinizing' started by danielb, Mar 12, 2007.

  1. danielb
    Joined: Mar 2007
    Posts: 1
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: New Zealand

    danielb New Member

    Here's my situation:
    25.5 foot, 2 ton, racer/cruiser fibreglass yacht needing repower. (In New Zealand - that's the one below Australia for the geographically challenged)
    Low budget!

    I currently have an MD5B volvo with MD110S sail-drive, which is quite ancient and am thinking it will need replacement sooner rather than later. Having done my research I found that Beta and Nanni both supply an ideal light engine with perfect output (couple extra hp over current) based on the Kubota. Whats more, both offer a adaptor to mate up to the existing sail-drive which I very much want to retain. Also the standard gearing can be used, as the newer engines put out their higher power at higher RPM (Power/RPM curve same as Volvo, just longer).
    The catch is the cost.

    The above options are close on 10k NZ dollars (about 5k USD).
    I have recently spotted the standard Kubota Z482 for under $5K NZ (about 2.5k USD). So my natural question is, should I attempt marinization myself.
    I am fairly capable with motors, having done a few partial rebuilds etc, so don't mind tackling the labour myself.
    The questions are:
    Will I save reasonable money?
    What is needed outside the obvious, like water-water heat exchanger (current engine is raw water cooled), custom exhaust manifold pipe with water injection point (basic, compared to bigger engine systems), and a custom adaptor to the sail-drive/gear-box?
    At the end of the day, what differs from the off the shelf Z482, to the Beta marinized version?

    Look forward to some knowledgable replies!
  2. jff
    Joined: Mar 2007
    Posts: 1
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Brisbane

    jff New Member

    Diecon engineering in Brisbane does a kit for A$2350 +617 3390 8190

    I have no experience or affiliation with them, just found them while doing some research on building a dc genset


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