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Jet Boats
General Jet Boat Discussions
Impeller tolerance
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<blockquote data-quote="LarryMc" data-source="post: 365844" data-attributes="member: 13895"><p>After you posted the measurements, I can see that your tunnel isn't too big. In the photo, it just looked bigger than most jet tunnels. As for your height adjustment, all jets won't work with the height set even with the front pins. Mine is set even with the leading edge. Any higher and mine will cavitate. I don't think that cavitation is your problem though. If your pump was cavitating, it would over rev and you would hear the difference in the sound your motor makes. I'm in agreement with the guys that think your problem is that your motor isn't reaching full RPM.</p></blockquote><p></p>
[QUOTE="LarryMc, post: 365844, member: 13895"] After you posted the measurements, I can see that your tunnel isn't too big. In the photo, it just looked bigger than most jet tunnels. As for your height adjustment, all jets won't work with the height set even with the front pins. Mine is set even with the leading edge. Any higher and mine will cavitate. I don't think that cavitation is your problem though. If your pump was cavitating, it would over rev and you would hear the difference in the sound your motor makes. I'm in agreement with the guys that think your problem is that your motor isn't reaching full RPM. [/QUOTE]
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Jet Boats
General Jet Boat Discussions
Impeller tolerance
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