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  1. #1
    KensGp kenlepack's Avatar
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    if you were to build another gprsho?

    Well guys i will be rebuilding my gprsho and im looking to do everything right and no cut corners. im looking for pointers and thoughts on what you guys wish you had done on your conversions or must have's on your conversions. i'm talking about everything from water bypass fitting locations,to bildge pumps, supercharger wheels, and hull mods, ect. things i will be upgrading on mine are new hull, et18 charger, clutch, fuel pump, injectors, seat, matts, hood, paint, steering set up. any ideas and input would be great.


  2. #2
    ksalles's Avatar
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    Get your hull setup right the first time. There are a few respected builders out there who can get the job done. Personally, I'm partial to Ben Herman, for not only how his hull has handled for me since day one, but his willingness to help me throughout my progression of my build. These skis are fun to build as you know, and can become very time consuming when focusing on making it everything you want it to be. Don't set deadlines and don't be in a rush, that way you don't sacrifice build quality as a result of time constraints.

  3. #3
    GGG's Avatar
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    Im still in the process of building my first GPRSHO but I have built a conversion ski before. Like said above, don't cut corners because youre never going to go back and fix it until it becomes a problem. For my gpr, I am at the least, doing pump shoe supports, pressure relief valves, tunnel reinforcement, gauges mount, pump upgrade, cooling upgrade, and intercooler upgrade, most things from there are simple bolt ons. Oh and I will also be relocating the battery and cutting the stock tray out. I hate not being able to access the rear of the ski in case of a problem

  4. #4
    rick xp's Avatar
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    I just completed my GPRSHO and took me about 2 weeks with working on a little bit everyday after work etc. didn't cut any corners and did everything to perfection.

    What made it easy I think was the fact I started with a perfect running FZR as a donor boat. I used everything from FZR including engine mounts, dash, bilge pump, compete pump, grips. Literally everything except the steering cable and stock water box.

    Bought the pump support from Jerry and made up all new billet plates for the mounts. Bought new ride plate and trim tabs. Bolted it all together.

    These GPRSHO are literally like a kit set boat and are not hard to build at all.

  5. #5
    rick xp's Avatar
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    Water in/out

    IN - used the factory inlet in through the transom plate. Also used the stock siphon as a line in. Installed an additional 1/2 thru hull for the intercooler supply as well.

    OUT - used the two factory outlets on the front of the GP1300R for the oil cooler outlets. I out two outlets out the back for the engine and intercooler. You could actually use the factory outlet on the transom plate for the inter cooler and the bilge outlet for the engine if you wanted a stock appearance. I wanted them above the deck so I can see in case things are not working.

  6. #6
    rick xp's Avatar
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    The other thing that helped out heaps was actually dry fitting everything first and ensuring everything lines up perfect. Dry fit transom, pump shoe, grate etc and ensure all plates and holes line up.

    I just dry fitted and check every time I glued a piece in. IE glued transom in. Then glued shoe and grate. Then glued in tunnel support and double checked by dry fitting every time.

    Also so I prefer using epoxy glue for the tunnel support. It's expensive stuff ($159) but it drys rock hard and is virtually bullet proof.

    Hull prep is everything! I spent 13 days getting the hull perfect and only took a day to put in everything from the FZR into the GPR.

  7. #7
    KensGp kenlepack's Avatar
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    Hull prep and fitting everything perfect is one of the main reasons I am redoing everything. I will be seeking some help from a few experienced guys for this. I am happy with my current cooling set up and seafood pump. Phillip_gpr helped me a lot with the initial build pieces and helped me out a lot. I also want to move my water bypass's. Also is an umi steering set up worth it? I am 95% sure I want one.

  8. #8
    KensGp kenlepack's Avatar
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    well finally got my rebuilt gprsho out and on the water. no gps numbers yet. but got it dialed in. from the begining.

    -pump ruinning a seadoo pump with a modified fzr shaft, philips adapter, phillips 5deg pump cone wedge, lucky 13 cone 86mm nozzle, fzr stock steering nozzle, 2 releif valves, 2 holes in shoe.

    -i used a seadoo lucky 13 cone, but being that it did not have the 5deg to match the nozzle, i modified it to fit my phillip 5deg adapter. now it is perfectly centered.
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  9. #9
    KensGp kenlepack's Avatar
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    -danny's custom midwall, and wfo pump shoe support,

    -drilled and tapped the rest of the wfo brace because i had to cut the bottom of it to fit over danny's midwall piece.

    -also installed r&d clutch save couplers.
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  10. #10
    KensGp kenlepack's Avatar
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    -changed valve springs and retainers

    -powder-coated a few pieces. i can't believe how easy this is.
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