View Poll Results: what engines do you think should this boat be upgraded to?

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  • MR1 160HO

    2 18.18%
  • 1.8 SHO

    9 81.82%
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  1. #1
    TuningForkMarine's Avatar
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    Yamaha XR1800 Build thread

    sup.
    yamaha XR1800. it was time to get a boat, so a week ago i picked up this gem in Florida.
    there arent enough of these boats out there built, or even built right. nevermind documented builds on the internet. so the plan is to change that. One member came close, but never finished the project. Lots of plans for this boat. Subscribe and enjoy.


  2. #2
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    Yamaha XR1800 Build thread

    Got this boat with less than amazing orange gator interior and of course sun beaten from Florida. Plan is to restore it to original glory and do some serious upgrading on the power plant.

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    Last edited by TuningForkMarine; 07-30-2016 at 10:13 PM.

  3. +1 by:


  4. #3
    TuningForkMarine's Avatar
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    WFO and i tossed around some ideas on the fuel delivery system, and we have decided that instead of running two sending units and cutting up a perfectly good fuel tank; to modify the stock sending unit and run a walbro pump that Rob at LBMOTORSPORTS.com has hooked us up with. The stock sending unit will do 2 things.
    1) it will allow usage of the stock fuel level and gauges,
    2) send fuel to a dual port Fuel pressure regulator, and from there to both motors.

    some pics.
    WFO and his handy work in all its glory. Seriously guys, the guy has a gift.









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    Last edited by TuningForkMarine; 09-06-2016 at 09:56 PM.

  5. #4
    TuningForkMarine's Avatar
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    Yamaha XR1800 Build thread

    Got my crate from homie WFO!

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    This is how far I'm gonna need to move it forward in order to connect the custom couplers.

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    But it looks right at home with the sho plant!
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    Last edited by TuningForkMarine; 09-16-2016 at 12:35 AM.

  6. #5
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    Yamaha XR1800 Build thread

    The couplers have arrived and Manica WFO has once again out done him self!

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    Also we finally finished up the fuel system routing.

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    Last edited by TuningForkMarine; 12-11-2016 at 09:42 PM.

  7. #6
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    Yamaha XR1800 Build thread

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    Donor ski for engine number 2
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    It's no pretty, working in the dirt so always in and out, it's a mess in the engine bay, but finally engine seated with the couplers installed!

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    Last edited by TuningForkMarine; 05-21-2017 at 03:23 PM.

  8. #7
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    Yamaha XR1800 Build thread

    Did some pump work.
    Had to pull the pumps out And service them, also needed to install s 2 inch pump extension because of the modified couplers. But finally pumps are done! And bearings are repacked
    Also installed some fancy WFO cooling upgrades.

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    Last edited by TuningForkMarine; 05-21-2017 at 03:27 PM.

  9. #8
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    Yamaha XR1800 Build thread

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    Last edited by TuningForkMarine; 06-02-2017 at 08:15 PM.

  10. #9
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  11. #10
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