NEED ADVICE!!(outboard to inboard 1.5 car engine )

Discussion in 'Inboards' started by Sceptre, Mar 23, 2010.

  1. Sceptre
    Joined: Mar 2008
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    Location: Toronto

    Sceptre Junior Member

    I have a 16ft chrysler trihull carbonfiber boat with 85hp outboard that can carry upto 5 people I work in a mechanical shop so i was thinking of mounting a 1.5 honda civic engine onboard and runing a streight pipe or through gear boxes any sugestions or advice ?
  2. marshmat
    Joined: Apr 2005
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    Location: Ontario

    marshmat Senior Member

    1) I seriously doubt that your 16-foot trihull is carbon fibre.

    2) What's wrong with the 85hp outboard that would make you want to replace it?

    3) Gull-wing trihulls aren't well suited to inboards, but if you want to mess around, nobody will stop you. STFW or browse the threads in "DIY marinization" on this forum for tips on what you should and should not do.
  3. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Chrysler boats where rather heavy chopper gun built boats.
  4. Sceptre
    Joined: Mar 2008
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    Location: Toronto

    Sceptre Junior Member

    well its old and im afraid it might go and i bought an engine before and it broke too so Im just thinking of mounting a small engine in it and it is carbon fiber or the next thing to it because I can clearly see on the bottom where the paint is worn off
  5. tunnels

    tunnels Previous Member

    Why would you want to think about putting a inboard in to replace a outboard . You will add a lot of extra weight and gain very little . Junk the out board you have and get something a little more modern and with more hp
    go find a 115 to 135 Vee 4 omc , yamaha or even a inline 4 merc . :p
  6. CDK
    Joined: Aug 2007
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    Location: Adriatic sea

    CDK retired engineer

    -You keep yourself busy for a long long time.
    -The boat is old, so ruining it doesn't make you bankrupt.

    -No marinizing parts available for this engine.
    -The boat is much too short for an inboard engine, even for a stern drive it is marginal.
    -There is just a paper thin hull, nothing solid to mount an engine on.
  7. Jango
    Joined: Aug 2005
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    Location: Mid Atlantic

    Jango Senior Enthusiast

    Listen to the previously given advice. I am very much an "Inboard Person", but your boat is not a good candidate. Find yourself a decent Outboard and have some fun.

  8. baboonslayer
    Joined: May 2010
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    Location: Colorado

    baboonslayer Junior Member

    Outboard motors save time and money* (*not always money, always time though). Just buy a used outboard that is for sale locally off Craigslist or Ebay instead of trying to take a Honda Civic car motor and convert it to a marine engine, which is a waste of time unless you have the proper tools.

    I agree with CDK, Jango, Tunnel, and Marshmatt.
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