How much will a reconditioned V8 cost

Discussion in 'Powerboats' started by Edd, Jan 26, 2004.

  1. Edd
    Joined: Jan 2004
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    Location: UK

    Edd New Member

    I have an 18ft Classic, British built Speedboat with a 3L 140hp 4 stroke inboard. This is not doing the boat justice and I am desperate to get a bigger engine for it. Does anyone know 1) how much I could potentially get selling my existing engine and 2) how much would a reconditioned 220hp V6 or 260hp V8 cost roughly?
     
  2. CPC
    Joined: Jan 2004
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    Location: Florida

    CPC New Member

    Yes for your 3L being used I'd say you wouldn't get but a few hundred dollars for it and for a reconditioned NON-marinized V-8 you'd be looking at roughly 1200-1600$ not including taxes or shipping.
     
  3. TheFisher
    Joined: Oct 2003
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    Location: Middleburg, FL

    TheFisher Junior Member

    You will definitely need to use a marine camshaft, brass knockout plugs, etc. You just can't use a non marine engine without modifications.
     
  4. CPC
    Joined: Jan 2004
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    Location: Florida

    CPC New Member

    You are missing the point here. I understand you HAVE to marinize the engine. What I am saying is the NON marinized V-8 reconditioned will be ruffly 12-1700$. You can marinize it yourself.
     
  5. TheFisher
    Joined: Oct 2003
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    Location: Middleburg, FL

    TheFisher Junior Member

    Sorry CPC, I was just trying to make the original poster, Edd, aware of some of the common mistakes people sometimes make in an engine swap.
     
  6. dgrason
    Joined: Feb 2004
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    Location: Nashville, Tn.

    dgrason New Member

    I'm new to this stuff so please help clue me in. Why does the camshaft need to be specifically for marine use?
     

  7. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    This subject has come up several times. There is much more than the camshaft that need to be changed.
    *Pistons need to be heavy duty
    *Piston rings need more gap than automotive
    *Valves have to be SS
    *intake manifold has bronze inserts in the water passages
    *rod and main bearings are of a harder alloy than automotive
    *oil pump is high volume
    *crankshaft is steel not cast iron
    *block and heads have nickel to make them corrosion resistant
    *electrics are marine-spark protected
    *balancer is differernt
    *flywheel is different
    *carburator has to be marinized or the fuel injected system be completely changed to a marine type
    There are more things, but this should be enough to show you that it is way cheaper to buy a marine engine. If you can't get a 4.3 locally I have several used and rebuilt. I don't know what the freight is but can check. Look in my website for more info.
     
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