cavitation

[93waverunner]

So, i let my friend ride my ski, and he said that the rpm's were councing because the impeller housing was worn down, could this be the only poosible thing or could other things b wrong?

 

[Bondo]

Re: cavitation

Well,........ Either your Not feeding it Clear, Clean Water,.......<br />Or,...<br />The Wear Ring is Shot.........

 

[93waverunner]

Re: cavitation

so, is it a good idea to change the existing impeller housing with one that can use the plastic liner so that it could easily be relpaced??

 

[Jeff Walkowiak]

Re: cavitation

Not aware of any that are available for that ski// most of those use a aluminum impeller and it is only good for a few years , I would replace the impeller with a stainless one and if the pump housing is corroded behind the liner it will bulge it and make contact with the impeller wearing the edges down, that section of the pump is made to be replaced and isn't really expensive the ski will act like a new one if you take care of the problem. if it is used in salt water you can be sure it has corroded behind the liner and a zinc anode should be added to the ride plate to prevent this in the future.

 

[Jeff Walkowiak]

Re: cavitation

here is a link to a picture of one , probably the worst impeller I have ever changed from a yamaha wave runner http://www.pwcweekly.com/forum/index.php/topic,303.0.html

 

[sloopy]

Re: cavitation

Originally posted by Jeff Walkowiak:<br /> here is a link to a picture of one , probably the worst impeller I have ever changed from a yamaha wave runner http://www.pwcweekly.com/forum/index.php/topic,303.0.html

I am amazed you got that off. It can be rebuilt .<br /><br />Speaking of rebuilds, does anyone know a good place to have a SS impeller repaired?

 

[Jeff Walkowiak]

Re: cavitation

believe it or not they were using that ski, when I replaced the impeller it gained 10 mph top end , for info s b t is now selling pump wear ring sections for yamaha pumps.

 

[93waverunner]

Re: cavitation

I actually did find a pump housing with a replaceable plastic ring for my ski at this site http://www.atlanticjetsports.com/pump_housing_w__replacable_wear_ring.htm web page and i think my ski may already havea stainless impeller on it because it doesn't look worndown at all.

 

[sloopy]

Re: cavitation

sbt?