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Thread: X18 Powerplant

  1. #1
    Join Date
    Oct 2004
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    X18 Powerplant

    Here is a couple shots of the X powerplant, I redid the plumbing with marine hose prior to installing in boat. Clear lines were for looks while it sat in our showroom.

    Still breaking in so performance specs. not avail yet. Should push the 14x18 clever with 1.31 edrive to about 5,600rpm and vessel should go 63-65 assuming about 14% slip. I decided not to go high hp since vessel still has cable steering. We used a 278 crane which has 114 centers, so it does idle at 700rpm which makes for easy docking.

    Trey
    "Life begins at Full Throttle"

    Current Donzi Stable
    1966 18' 2+3 3 hatch Chevy 408ci/440hp Imco Shorty (under rehab)
    1967 18' 2+3 V-Hull 383 Magnum EFI (under rehab)
    1987 22' 2+3 (this one runs)
    Current "other" Stable
    1985 24' Sanger Alley Cat 200 Mercs
    1988 33' Fountain 511ci/585hp x2 (under rehab)
    2005 377 Intrepid 3x275 Verados (regular use vessel)

  2. #2
    Join Date
    Jan 2001
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    Very nice looking!!
    Will the E-drive hold together with that HP?
    U.S.C.G. Master Captain
    "Pioneer of insane speed concepts & creations"

  3. #3
    Join Date
    Jul 2001
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    nice looking engine.

    You should really consider a a single ram hydraulic steering setup. (Much easier on you and the boat)

    That drive will last along time with that power.

    Do you have a trim system on the X


    BRIAN
    (one week till shake down time)
    I wonder how the new tabs will work with a tiny bit more horsepower???

  4. #4
    Join Date
    Mar 2005
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    makes me feel bad

    this looks awesome!!! makes my x look pretty bad.
    Quote Originally Posted by BRIAN73
    nice looking engine.

    You should really consider a a single ram hydraulic steering setup. (Much easier on you and the boat)

    That drive will last along time with that power.

    Do you have a trim system on the X


    BRIAN
    (one week till shake down time)
    I wonder how the new tabs will work with a tiny bit more horsepower???

  5. #5
    Join Date
    Oct 2004
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    I may be selling the X in the near future, so an external steering system will have to wait until the sell or keep decision is made. It does have a full hydraulic trim 290 upper atached to the edrive lower. My 1966 three hatch project is the high HP insanity ride which will someday be completed (408ci/500hp). The X was built just to be a Severn River...Annapolis cruiser. I'll post some pics of the boat when I get a chance to take some. It is one of the best condition, original gel X18's around since it was garage kept most of its life.

    Trey
    "Life begins at Full Throttle"

    Current Donzi Stable
    1966 18' 2+3 3 hatch Chevy 408ci/440hp Imco Shorty (under rehab)
    1967 18' 2+3 V-Hull 383 Magnum EFI (under rehab)
    1987 22' 2+3 (this one runs)
    Current "other" Stable
    1985 24' Sanger Alley Cat 200 Mercs
    1988 33' Fountain 511ci/585hp x2 (under rehab)
    2005 377 Intrepid 3x275 Verados (regular use vessel)

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