Thread: cavitation / airation
11-15-2008, 12:54 AM #1
cavitation / airation
looking for a little assistance for a cavitation/airation problem that i have been having for a while when stabbing it off the line. i have replaced the carbon seal, then replaced it with a seadoo center seal, replaced pump seal, tried many different props tall and short(thats not the problem) resealed shoe (without removing) tried ss wear rings and new oem wear rings etc etc. my thoughts is that it is sucking air from within the pump shoe some where . apart from removing the shoe and ride plate am i missing anything any help would be tops.
11-15-2008, 01:19 AM #2
- Join Date
- Nov 2007
- Odessa, TX
11-15-2008, 04:23 PM #3
- Join Date
- Dec 2007
- Christchurch NewZealand
I have had one suck air between ride plate and shoe i took the pump out and sealed up all around the back of the shoe area and it was fine after that. removing the plate would be better but after doing a few its not a nice job but not to bad.
11-16-2008, 04:24 AM #4
thanks fellas, looks like the shoe is comming out then
11-24-2008, 09:49 AM #5
keep in mind depending on the kind of ski you might need to install trim tabs, specially if your producing serious horse power, some ski's will reaise the nose so high that they expose the intake grate, there for they take in air and cavitate.
12-02-2008, 05:18 PM #6
- Join Date
- Jun 2006
12-02-2008, 06:00 PM #7
worx. they stick better to the water in my opinion. tried a few others.
12-02-2008, 06:48 PM #8
What Prop, and nozzle size are u running? u may have too much power , and too small of prop, or too large of a nozzle exit. Try a smaller nozzle, and see if that does it.
I would also look at the floating ring on the drive shaft while running to see if it wobbles some, or is perfectly straight. I had a worn, pitted C-clip, and groove in the shaft, and if it wobbles any, that's your problem. I ended up replacing the drive shaft, and clip, and no more problems.
12-03-2008, 06:19 PM #9
02-24-2009, 05:52 AM #10
is there any way a miss aligned engine can cause cavitation ?? I had to move 3mm to the right and jack up left back 2mm, a fair bit but am still trying to find this dam problem. shimmed the shoe (was not to bad) resealed everything tried a few more different props, tall ones were not to bad but suck for hole shot in cc. there is something I am missing.
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