Thread: Strange wearring problems
06-07-2010, 11:08 AM #1
Strange wearring problems
I have a strange problem with my wearring.
The problem starterd after rebuilding my pumptunnel,with kevlar and carbon fiber.
I didn't remove the engine,the pumpshoe stayed in place.
Pumptunnel was rebuild to same dimensions and tru hull fitting wasn't moved.
When i install the 15/22r and the wearring in the pump,all is fine it spins free.
When i install the pump and start the engine it starts eating the wearring all around.(did this on my old wearring also which was installed already and run fine for 10hrs)
Tried 3 wearrings total and did a testride.
Bad cavitation due to the wearring problems.
This can be cause by a bad pumpbearing.
But i didn't remove the engine,i didn't remove the pumpshoe.
Basically i didn't do anything besides rebuilding my pumptunnel.
Gonna check my driveshaft if it's has the right tolerance.
Install a new bearring and oilseals.
Align the engine.
And then test the wearring again.
I know what can cause the problems with the wearring,but everything was fine before the pumptunnel cracks.
Hopefully i will fix the problem ,but still very strange!!!!
06-07-2010, 11:28 AM #2
Using Oem wear rings ?
06-07-2010, 11:29 AM #3
06-07-2010, 11:33 AM #4
When I installed my 15/22r it cut into the wearing but it doesn't cavitate. I understand some people break in a wear ring @ the ramp so when it does cut in it comes out smooth.
06-07-2010, 12:17 PM #5
Believe me this is not normal breaking in,the impeller is melting the wearring and scraping it,the shape is not round for sure.
06-07-2010, 12:25 PM #6
Have you checked the blades on your 15/22 ? They are not always the same pitch and one blade could be a bit wider/longer.
06-07-2010, 12:28 PM #7
06-07-2010, 12:38 PM #8
look closely at your blades for a crack... it would be fine on the bench but at 8000 rpm it would flex outward.. just a thought ..or i would look real close at the pump berrings .....
06-07-2010, 12:53 PM #9
Replacement Bearing Kits....................... I hope your impeller shaft and spacer are still in good conditions and just needed the kit.
06-07-2010, 02:33 PM #10
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