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Jet Boats
General Jet Boat Discussions
a new jet ski jet boat project
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<blockquote data-quote="scubapro820" data-source="post: 259634" data-attributes="member: 7883"><p>Ok so I got some new plugs for the engine not sure why the insulator on the spark plug broke but Im going to carry extras and make sure I dont have a lean condition IE crank seal etc. </p><p></p><p>After I get it back on the water with the new plugs and spares and get it dialed in I want to weigh my boat and find out why the top speed seemed slow, the Tigershark engine wanted to over rev 7-8k at wot. I would imagine that this is controlled by the impeller and jet nozzle similarly to how wot rpm is controlled by prop pitch on an outboard any ideas? Solas has a YB-CD-16/20 concord series impeller that is steeper than the 14/18 I have now and if that is not enough i can maybe do a custom pitch? or am I jumping the gun on this too soon ?</p><p></p><p>lastly does everyone else run 92/93 octane?</p></blockquote><p></p>
[QUOTE="scubapro820, post: 259634, member: 7883"] Ok so I got some new plugs for the engine not sure why the insulator on the spark plug broke but Im going to carry extras and make sure I dont have a lean condition IE crank seal etc. After I get it back on the water with the new plugs and spares and get it dialed in I want to weigh my boat and find out why the top speed seemed slow, the Tigershark engine wanted to over rev 7-8k at wot. I would imagine that this is controlled by the impeller and jet nozzle similarly to how wot rpm is controlled by prop pitch on an outboard any ideas? Solas has a YB-CD-16/20 concord series impeller that is steeper than the 14/18 I have now and if that is not enough i can maybe do a custom pitch? or am I jumping the gun on this too soon ? lastly does everyone else run 92/93 octane? [/QUOTE]
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Jet Boats
General Jet Boat Discussions
a new jet ski jet boat project
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