First time jet boat build.

Dragonalain

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New to jet boats. Just looking for some tips or advice along my build. It’s not a low water boat. It’s 19ft and has a 16 degree hull im ok with that. I’ll be using this boat on bigger lakes and sandy sk rivers. We dislike our ssv Alaskan with a 8 degree hull it’s so dang rough when the waves come up. I’m Building a mostly alum 460 stroked to 557 with fuel injection. The jet is a 12jc and I bought a A3 impeller for it. Probably to much motor for the boat I have. I’m building this motor to keep for a future project that a large power plant will be nice.

The boat is Getting fully rebuilt. I managed to stuff in 500L of fuel, two captain chairs with smooth moves suspension and a bench seat. It will fit 5 ppl but it mostly will just be the wife and I on the adventures. Tons of storage under the bow of the boat, on the sides and behind by the motor.

One thing I’m concerned about in the noise. The boat has water logs and snails followed by some stainless steel tips with the a couple baffles in them.

For vibrations I’m going to dyno matt anything that can viabrat.

Here’s a few progress photos so far I’m around 25g and will have a 700 ish Hp engine.

Cost should stay reasonable as my dad has a ekeystone account and a welding shop.

Keeping the name but not the colour.


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neilsleder

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Looks good. 16 deg and looks to be narrow so will be way smoother then the 8 deg. If you need advice for that pump Roger Kehoe in Edmonton is probably one of the most knowledgeable guys when it comes to those pumps.
 

Dragonalain

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Ordered two sheets of uhmw today going to machine Some plugs and plug weld it on.
 

NoBrakes!

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I read 460, 500L, dynamat, UHMW... she's gonna be a thick girl
 

Dragonalain

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I read 460, 500L, dynamat, UHMW... she's gonna be a thick girl

Yes it’s going to be HEAVY when fully loaded. The 460 I think will be surprising light other than a alum block I don’t think I can buy another alum part. I was really debating the uhmw for weight but I sure don’t want to tag a rock and sink . The fuel is in two separate tanks. 280l rear seat tank and 220L belly tank. I don’t plan on keeping it full on all outings. I currently only have two trips planned I’ll need all the fuel. Doing a week plus to lake athabasca and have a fairly long trip planned down the north sask and up the south sask river.
 

NoBrakes!

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Awesome man, you're thinkin ahead!

the rivers you choose determine the bottom protection requirements. We do lots of boating on the smokey with no protection at all, some big water at times, lotsa big rocks, but not a lot of gravel bars... go to the gravel pit known as the wapiti, and your needs change, no big rocks....
 
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