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Jet Boats
General Jet Boat Discussions
Jet foot height
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<blockquote data-quote="Vol423" data-source="post: 391606" data-attributes="member: 6621"><p>You can now raise the motor about an additional inch until it touches the extension. I would also suggest that you extend the sides of the extension as well. I sell jet boats that are built for me by a prominent manufacturer. I specify a stahlman tunnel, but it is made of one piece 3/16 plate, and the tunnel top and sides extend 6 inches past the transom. I typically mount the motor high so that it touches the underside of the extension when tucked in. I have never had a boat cavitate and spray is minimal. I have mounted 60 to 125 HP jets on the 1756s with no problems. The boats are rated to 90 HP at the pump, but customers have mounted as high as 150s (100HP at the pump) successfully.The intake scoops do work if you have a questionable setup, but I have never needed one on one of my boats. If you have low speed steering issues jet wings help, as does trimming the motor up during low speed maneuvers.</p></blockquote><p></p>
[QUOTE="Vol423, post: 391606, member: 6621"] You can now raise the motor about an additional inch until it touches the extension. I would also suggest that you extend the sides of the extension as well. I sell jet boats that are built for me by a prominent manufacturer. I specify a stahlman tunnel, but it is made of one piece 3/16 plate, and the tunnel top and sides extend 6 inches past the transom. I typically mount the motor high so that it touches the underside of the extension when tucked in. I have never had a boat cavitate and spray is minimal. I have mounted 60 to 125 HP jets on the 1756s with no problems. The boats are rated to 90 HP at the pump, but customers have mounted as high as 150s (100HP at the pump) successfully.The intake scoops do work if you have a questionable setup, but I have never needed one on one of my boats. If you have low speed steering issues jet wings help, as does trimming the motor up during low speed maneuvers. [/QUOTE]
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Jet foot height
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