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Just purchased Viking 33" 1973 Sportfish Convertible Pros and cons

Discussion in 'Viking Yacht' started by Logic444, Feb 12, 2015.

  1. Logic444

    Logic444 New Member

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    Anyone got any info on the Viking 33 they can share? This is a boat that has had a lot of work and money put into it by the previous owner. I purchased it recently. I know it has 2 new aluminum tanks and aluminum hard top canvas and the interior was gutted and reconstruction was started. The motors might be seized so today I removed the spark plugs and sprayed each plug hole, i will repeat this step one more time in 3 days before trying to turn the motor. The boat has new paint top and sides. I have never owned one of this size so any input would be helpful.

    There was water that came out one spark plug hole on one motor all the other plugs were dry. The other motor was dry completely. I think one has a blown head gasket (hence the water in one plug). The transmission looks good on both sides. I think there might be a hydrolock on one cylinder with the water in it ( I am guessing) which might be the cause for a lockup. There is a water line that reached the bottom end of the motors but no water was present other than that one plug. The oil in the dip stick was grey on one with water and the other was pretty much blueish.

    I think i got a good buy. She's a pretty boat and I hope to get her running soon. Any idea as to the costs that went into the parts and paint that were put into it?



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  2. Capt J

    Capt J Senior Member

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    No, the water is probably leaking into the cylinder from the salt water in the exhaust manifolds. If they're over 5 years old, change the exhaust manifolds and risers.
  3. Logic444

    Logic444 New Member

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    Ok! That makes sense. You seem very sure of yourself. Are you a mechanic Capt J? Can you provide a little bit of details as to what it will take to get these puppies running assuming the motors are good?

    Thanks in advance.
  4. Capt J

    Capt J Senior Member

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    To a degree. I've rebuilt many gas motors many years ago. I don't get into rebuilding gas motors or even repairing them much anymore. I sub-contract it out. The #1 killer of gasoline inboards is bad exhaust manifolds/risers. Pull the exhaust manifold and riser off of the side that has water in it, chances are you'll see that or those exhaust ports in the cylinder head are all corroded from saltwater. Manifolds and risers should be changed every 5 years, yet are the most neglected item on the motor. I know of a good mechanic out of Fort Lauderdale.
  5. RT46

    RT46 Senior Member

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    the weak point of those motors is usually the risers.

    a lot of owners neglect them because they are expensive and time consuming to replace every few years. Also they can look great from the outside and be toast on the inside.
  6. Logic444

    Logic444 New Member

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    A head gasket is more likely, it would take a lot for the manifolds to take on water and seep through the heads.
  7. Capt J

    Capt J Senior Member

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    No, the exhaust manifolds/risers are the most likely culprit. They leak into the exhaust port and then leak right into the cylinder from any of the exhaust valves, even ones that are closed given enough time.
  8. RT46

    RT46 Senior Member

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    I agree with Capt J, most likely the risers.

    is the engine raw water cooled or is there a heat exchanger?
    If there is a heat exchanger then you would not have raw water in the cylinder.


    You could try filling the cylinder with mystery oil and let it sit for a few days and then try to bar the engine over.

    But, most likely it is stuck and the heads will have to come off and the bearings may be washed out depending on how much water is in the oil.

    You are most likely looking at a rebuild or long block replacement.
  9. Logic444

    Logic444 New Member

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    Yes it is raw water. I sprayed the spark plug holes with WD40 then again 4 days later. I'll attempt to turn the motors in another 3 days. Once i turn the motors i'll see whats going on too.
  10. Capt J

    Capt J Senior Member

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    On Gas motors. Even if they're fresh water cooled. Mercruiser manifolds and risers are still raw water cooled. Cruisaders have freshwater cooled manifolds, but still have raw water cooled risers. Saltwater can get into the cylinders either way if you have bad risers, or manifolds on Mercruisers and a lot of the smaller brands (PCM etc.)
  11. Logic444

    Logic444 New Member

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    thanks for that Capt J. Looks like i got some work to do when i go to move her Thursday. I am itching to know if the motors will turn over and to also see whats going on with the one cylinder this way I can begin budgeting for a repair or rebuild.

    Any advice from the forum on how to tow the Viking myself from the marina using my 22ft open fisherman? I have never attempted to try this before so any input is appreciated. The tow will take place by boat and in the bay following the markers and route i have precreated on the GPS. I also checked the depth based on low tide conditions. Thanks in advance.
  12. Boatman Bob

    Boatman Bob New Member

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    I owned a 1973 33 many years ago. Great sea boat, excellent in a following sea. I had Crusader 454's full fresh water cooled. 13 knot cruise at about 3000 RPM, but would get up and go at 3500, but eat gas like I owned the station.
    Well built, good hull and gel coat. Kept her in the water year round, and it eventually grew blisters. I sold it when I bought a 40 Silverton. Viking was a much better built boat.
  13. Blane Tatum

    Blane Tatum New Member

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    How Nae Nae happened upon this thread we will never know... She was trying to find pictures of '73 - 33' Viking and the forum popped up...

    We are now the owners of the '73 - 33' Viking...

    It has been through two more owners with repairs started but far from completed...
    It has survived a major storm and a category 5 Hurricane with minor damage...
    We purchased it knowing full well it will have to be gutted and rebuilt with 'New engines' and interior, including wiring and plumbing & all cables etc...
    This by far is the most extensive rebuild I have taken on, and i know it will take a year or more before completion...
    With the advancement of materials that will never rot or decay (at least in my lifetime), I believe it will turn out well.
    It came with Mercruiser 350's , found a dealer with marine 383 Strokers ...
    Strokers are $3500 each, but i can get 350's for $1700 each and I looked at Competition cams and they offer a high torque cam for Marine use at around $200.00
    (still contemplating)...
    Diesels would be nice, but with the overall costs we are looking at, we are going back (close to) as originally designed...
    The Transmissions will be rebuilt (Borg-Warner velvet drives) ...
    The boat was inspected and was found to be in sound condition (hull wise) (Stringers were my biggest worry)...
    Props and shafts were replaced previously (never turned an ounce of water since replacement), along with new Bow railing, Bimini top and frame...
    It sits in a slip in a fresh water river (which is a plus)...
    We are in for the long haul... beginning the interior removal this weekend (not much left...) and then a fresh coat of epoxy paint over the entire interior hull...
    Plans are to get it where we can overnight on her and do things on the weekends...
    Anyone know where to locate any manuals (service or owners) on this vessel ?
    Please advise...
    Also...
    Prayers needed... :)

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