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Jon and V Boat Conversions & Modifications
Trying to put seadoo 717 motor in 1542 flatbottom
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<blockquote data-quote="PSG-1" data-source="post: 237775" data-attributes="member: 6937"><p>The biggest PITA about the Yamaha intake scoop is that it has a taper in its design, and you have to build this shape into your tunnel cut-out. You'll also have to bend a horse-shoe shaped piece to seal around the top radius of the intake scoop. (There are photos of this on my Aluma-Jet thread.)</p><p></p><p> Boxing in the rest of the pump is fairly simple. I would also suggest building the box wide enough to allow for the exhaust flange to go into it, instead of going out the transom with the exhaust. Putting it into the jet unit tunnel, then closing around the back with some rubber skirting, will cut down on engine noise from exhaust. </p><p></p><p> This is how Yamaha does the exhaust on their 4 stroke jet skis now, and it's how I did the exhaust on my boat when I installed the 4 stroke. Makes a big difference in the sound signature. You can see the comparisons on some of my youtube videos titled "2 stroke vs. 4 stroke"</p></blockquote><p></p>
[QUOTE="PSG-1, post: 237775, member: 6937"] The biggest PITA about the Yamaha intake scoop is that it has a taper in its design, and you have to build this shape into your tunnel cut-out. You'll also have to bend a horse-shoe shaped piece to seal around the top radius of the intake scoop. (There are photos of this on my Aluma-Jet thread.) Boxing in the rest of the pump is fairly simple. I would also suggest building the box wide enough to allow for the exhaust flange to go into it, instead of going out the transom with the exhaust. Putting it into the jet unit tunnel, then closing around the back with some rubber skirting, will cut down on engine noise from exhaust. This is how Yamaha does the exhaust on their 4 stroke jet skis now, and it's how I did the exhaust on my boat when I installed the 4 stroke. Makes a big difference in the sound signature. You can see the comparisons on some of my youtube videos titled "2 stroke vs. 4 stroke" [/QUOTE]
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Jon and V Boat Conversions & Modifications
Trying to put seadoo 717 motor in 1542 flatbottom
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