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Jet Boats
General Jet Boat Discussions
Cavitation on top end
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<blockquote data-quote="BigTerp" data-source="post: 376422" data-attributes="member: 9169"><p>You may want to also address the bottom. You say it's seen better days? If it's too damaged near the foot of your pump it can cause aerated water to get into your pump causing cavitation. I mashed up my drain plug this past fall, which sits directly in front of my jet foot. My buddy and I straightened it back up and welded up the leaks. The welds were far from perfect. The next time out my motor cavitated like crazy. I took an angle grinder and cleaned up the welds we did. Then took some 220 grit sandpaper and hand sanded the area until it was smooth as glass. All my cavitation issues completely went away. I don't think this is your problem, but while your working on the motor cleaning up the bottom of your hull in front of and around your jet foot will only help.</p></blockquote><p></p>
[QUOTE="BigTerp, post: 376422, member: 9169"] You may want to also address the bottom. You say it's seen better days? If it's too damaged near the foot of your pump it can cause aerated water to get into your pump causing cavitation. I mashed up my drain plug this past fall, which sits directly in front of my jet foot. My buddy and I straightened it back up and welded up the leaks. The welds were far from perfect. The next time out my motor cavitated like crazy. I took an angle grinder and cleaned up the welds we did. Then took some 220 grit sandpaper and hand sanded the area until it was smooth as glass. All my cavitation issues completely went away. I don't think this is your problem, but while your working on the motor cleaning up the bottom of your hull in front of and around your jet foot will only help. [/QUOTE]
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Cavitation on top end
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