Horrible cavitation issues

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Rossp

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I have an 08 rxp255 that’s having some bad cavitation. Anything under under 20-30mph wide open throttle goes straight to the rev limiter. I’ve got the pump off and all looks good with .010 clearance on the wear ring and no gouges or anything. The ski doesn’t leak water into the hull so I don’t the carbon seal is causing it. The pump seal seems to be good but will replace it when putting everything back together. Is there anything I’m missing that could cause my issues?

 

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From what I read last night because I was having similar problems that’s why I’m on here reading about the stuff again.
I read where if there are any imperfections around the water intake grille on the bottom it could do that.
I’m going to be checking and wet sanding everything around the intake grille.
Smoothing everything up real good, clean it up really good and get some good silicone caulk to fill any gaps between the grille and hull.
I’m also missing one bolt underneath on the intake grille and I suspect that it’s causing cavitation.
Good luck.
 
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