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<blockquote data-quote="PSG-1" data-source="post: 384884" data-attributes="member: 6937"><p>The delta hull is a bit different than a spoon. The delta hull involves cutting the center section out of the boat, for about 4 feet, dropping it about 3" at the transom, and tapering back to flush at the front end. The entire jet pump and engine is then set down into this.</p><p></p><p></p><p>When welding, use ER5356 wire, as it is marine grade. Do NOT use 4000-series (4043) as it will lead to corrosion. 4043 welds without all the soot and smoke, and makes a nice clean bead, but it will not last in water.</p><p></p><p>Immediately before welding, be sure you thoroughly clean all edges using a stainless steel wire brush.</p></blockquote><p></p>
[QUOTE="PSG-1, post: 384884, member: 6937"] The delta hull is a bit different than a spoon. The delta hull involves cutting the center section out of the boat, for about 4 feet, dropping it about 3" at the transom, and tapering back to flush at the front end. The entire jet pump and engine is then set down into this. When welding, use ER5356 wire, as it is marine grade. Do NOT use 4000-series (4043) as it will lead to corrosion. 4043 welds without all the soot and smoke, and makes a nice clean bead, but it will not last in water. Immediately before welding, be sure you thoroughly clean all edges using a stainless steel wire brush. [/QUOTE]
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