28 ft 2x v8 fix up cabin cruiser? 1200$?

Discussion in 'Boat Design' started by parkland, Aug 16, 2012.

  1. FAST FRED
    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    Look in your favorite engine makers book of "Crate engines".

    You will find the same displacement in a variety of power options and recomendations for service.

    A 350 truck engine will have less advertized power than a 350 engine for a kid into drag racing.

    The better engine marinizers will select the setup with the "best" block , crank, cam profile , and heads for boat use .

    With large purchasing power I would assume they can order from the mfg. menu , just what their boat customers want. Usually longevity , not peak power.
     
  2. SamSam
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    Location: Coastal Georgia

    SamSam Senior Member

    IOs, I've had them, I've worked on them, I don't like them, but that's just me. One thing disagreeable is the Achille's Heel of the rubber boot being the only thing between you and a sunk boat. Old cracked ones will do it, incorrect installations, failing clamps, I've heard of critters chewing through them. There are so many fairly delicate extra parts to them and accessibility is a nuisance. The simplest thing seems to require major disassembly.

    One thing I do like about them is they put the engine at the back and open up the cockpit, eliminating a huge useless lump of engine hatch in the mid.....in the middle of the......right in the way of everyth.................
     
  3. viking north
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    viking north VINLAND

    And a fine cockpit is it --I mean it is --Oh what the heck it's a nice open space----
     
  4. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    I get the opportunity to build a hot engine every so often and the after market has blocks that far exceed the OEM specs. I can get aluminum versions of their cast iron counterparts, 1/3 to 1/2 lighter but stronger with better features, light deck heights, reinforcement gussets, bosses and stroked crank clearances. Even the OEM stuff usually has a few choices, in regard to HD versions, especially the reciprocating mass.

    Building engines like this isn't for the DIY'er, as they just don't have the equipment or expertise, but if looking at repower or rebuilding, buy a crate motor with the good parts or select a rebuilder that will make the appropriate choices, after a long discussion with you. In most cases, the average repower just needs a new motor and a long block from one of the aftermarket suppliers is all you need. In the case of the original posters need to rebuild the 327's, I'd just have them done locally by a shop, which is usually about half the price of a crate engine.
     
  5. parkland
    Joined: Jul 2012
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    parkland Senior Member


    I hate stuff that needs major dissassembly for little stuff, "f" that.

    I didn't realise the rubber cracking would leak right in, I'm not having that.
     
  6. SamSam
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    Location: Coastal Georgia

    SamSam Senior Member

    'Why boats sink at the dock"
    http://www.boatus.com/foundation/guide/boat_7.html
     
  7. viking north
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    Location: Newfoundland & Nova Scotia

    viking north VINLAND

    Exactly why i close all seacocks at night when i sleep or when leaving the vessel. The drowning of Mel Fishers son, wife and baby is a terrible example of what can happen. In this case you don't have this option.
     
  8. parkland
    Joined: Jul 2012
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    parkland Senior Member

    OK,

    Not the end of the story...

    It's not I/O drives....

    The engines are in the back, shafts forward to a transmission, than back through the hull to the props.

    What system is this considered to be, and is it more reliable than I/O drives?
     
  9. SamSam
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    Location: Coastal Georgia

    SamSam Senior Member

    That's a v-drive.
    [​IMG]
     
  10. parkland
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    parkland Senior Member


    So is the V drive considered a more reliable cheaper option than I/O drives?

    Looks like a simpler design to me.
     
  11. SamSam
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    Location: Coastal Georgia

    SamSam Senior Member

  12. parkland
    Joined: Jul 2012
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    Location: canada

    parkland Senior Member


    Thanks for that!!

    Looks like since I don't want to race, the V drive will be what I want because of the reliability and less maintenance.

    I can't believe this boat actually has V drives, I thought only larger boats did. The best part is, both work, so I should rebuild them, get some newer engines in, and I'll have something !!! ;)
     
  13. parkland
    Joined: Jul 2012
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    parkland Senior Member

    Heres some pictures :)
     

    Attached Files:

  14. parkland
    Joined: Jul 2012
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    parkland Senior Member

    To me it seems worth 1200$ ....

    I know it will take a lot of work, but it doesn't seem to need anything really major....
     

  15. whitepointer23

    whitepointer23 Previous Member

    3 pages talk about stern drives and it turns out to be v drive, what a waste of time. replace or rebuild engines and it will be fine, or remove all that gear and sell it and put the money towards a single large outboard. even a 2 stroke 225 will be cheaper to operate than twin v8's. a 250 4 stroke would be good if you can find one for the right price. its the old question of fuel usage vs replacement cost. if you don't plan on going far or using the boat to much fix the v8's, if you plan on doing lots of miles you can weigh up the pro's and cons of a repower. i had twin v8's last year and i could not afford to use the boat so i sold it.
     
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