How damaged is too damaged for an impeller?

[Woodstockaz]

Just replaced the wear ring and saw that the impellar had some good chips missing from the leading edge side. I'd replace it if I had more time but I gotta take them to lake tomorrow for a lake test.
What amount of chipping or dents to the leading edge is too much that will cause cavitiation?

 

[kustomkarl]

You really need to add you seadoo model and year so we know which one you own...4-tec or 2 stroke? The measurement is different.

Measure the clearance.

Wear Ring clearance for non 4-tec 1.0 mm or (.040in)
Wear Ring clearance for ALL 4-tec 0.035 mm or ( .014in)

Wear Ring clearance for your seadoo 1.0 mm or (.040in) Measure the clearance at the center of the impeller blades, with a 12” long gauge. Measure the clearance from the venturi side of the jet pump.


Karl

 

[Woodstockaz]

Thanks Karl.

It's a 1998 Gti 2 stroke.

i just replaced the wear ring but am concerned about the impeller.

It's not the clearance that concerns me so much since I just replaced the wear ring. (though I don't have the gauge to measure) It's more the leading edge being dinged up.

 

[RFoster130]

Considering you can get it refurbed for $25, I think its a good idea to just do i over the winter, I think for most people, if its bad enogh you are asking here, it nees to be done.