Super Jet Cavitating after I installed a new bored nozzle

[lostcreek21]

So I put a bored reduction nozzle on my 96 SJ and now its cavitating after I spin a little flat 180 and go into a tail stand. I have an 08 stock impeller and a worx intake grate. It never cavitated when I had a stock reduction nozzle so I'm assuming the new bored nozzle is causing this but I didn't think boring a nozzle a few mm would make such a big difference....

Anyone know why this is and if I need to change my impeller?

 

[toyota00]

I can't give you a direct answer on boring the nozzle, but I just changed from the stock impeller and O M G what a difference. The stock impeller is JUNK!! If you have the cash, get an impeller, do your research on what you want your machine to do though because the impeller will dictate a great deal of your end goal. Hopefully someone can help you about the nozzle.

 

[lostcreek21]

The +08 impeller is actually a very good impeller and a huge improvement over the stock impeller that came on the 96-07 SJ's

 

[rackbuilder]

maybe you should sell the Protec pipe to your buddy and the cavitation will go away, its worth a shot.:nutkick:

 

[jetpilot808]

Stock cone or stubby?

 

[lostcreek21]

Stock cone