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05 Challenger 180 Impeller damage/Hole inlet cleaner… Subject specific thread. PICs

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SLOWBRAH

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I apologize for making two threads “on top” of one another. I need to stop inquiring about several subjects under one thread. I’d like to get your experienced input on the condition of my Impeller/Wear Ring. This boat only has 40 hrs on the clock. I am hoping that this is the reason I am having cavitation issues.

275.jpg


276.jpg



I figured that this small amount of damage wouldn't affect the impellers performance. However, after watching this video I’ve decided to that I may need to replace my impeller. Also… I have a “hole” where the inlet cleaning actuator is. Could this be where air is getting sucked in? How should this look? What do you all think?



I can't seem to find a replacement impeller. Where do I go to get another impeller? Suggestions?



http://www.youtube.com/watch?v=9dPvFr9OmKo&noredirect=1



277.jpg
 
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Hi,
your impeller doesn't look that bad but that HOLE is terrible. Try impros for the impeller or SBT has an impeller exchange program.
Didn't that hole let water into your hull?
I assume some sort of fitting went there. You may have to fiberglass over it then drill a new right size hole with the proper seal/fitting/whatever it needs
 
SLOWBRAH said:
Yeah, I guess it is letting water in... How should this look?? I obviously would like to fix it correctly.
Click to expand...
From your picture, you can see the metal shaft that holds the cable to the ICS gate. If it was taking on water you would have known it if you were pumping excessively out of the bilge.

I would remove the grate, then sand what material is there to get it smooth. Then use a marine epoxy to fill in the holes and sand again. Maybe throw a gelcoat on top. Mostly that will be cosmetic. I have included a picture of the system:
ics.jpg

Put the boat in the water and see if water is really coming in from that area. Also you can examine it from above in the engine compartment.
 
Look at my post #12 http://www.seadooforum.com/showthread.php?65776-04-Speedster-200-Project
I was leaking really bad and the same engine didn't have a lot of go. I am hoping this was my issue. Your hole looks horrible but I Cant say mine is any better. It almost looks like it was a after thought. Its easy to remove. Take the screw out of the grate one the bottom and then take the plastic cap out where the cable goes thru in the hull. Mine was broke so I skipped that step. Replace the rubber washer/seal and I went ahead and got the metal fitting plug on e bay so it wont crack again.
 
I took a shot and ordered the hull seal and half ring. That with some epoxy and white touch up paint should do the trick! THANK YOU!!
 
That hole is suposto be there, but shouldn't look like a 2year old installed it.
 
SLOWBRAH said:
I apologize for making two threads “on top” of one another. I need to stop inquiring about several subjects under one thread. I’d like to get your experienced input on the condition of my Impeller/Wear Ring. This boat only has 40 hrs on the clock. I am hoping that this is the reason I am having cavitation issues.

275.jpg


276.jpg



I figured that this small amount of damage wouldn't affect the impellers performance. However, after watching this video I’ve decided to that I may need to replace my impeller. Also… I have a “hole” where the inlet cleaning actuator is. Could this be where air is getting sucked in? How should this look? What do you all think?



I can't seem to find a replacement impeller. Where do I go to get another impeller? Suggestions?



http://www.youtube.com/watch?v=9dPvFr9OmKo&noredirect=1



277.jpg
Click to expand...

It's really hard to see the gap between the impeller and wear ring, but it should be about the thickness of a credit card, no more then the thickness of a dime. That's about where mine is now, and there have been some sand and gravel through mine, my impeller leading edges look slightly worse than yours, to me. I have no huge performance issues with my pump as it is, although I think the dinged up impeller is hurting my top speed a bit, seems I was getting 45mph on my dreamometer just before I last sucked up some gravel, noticed last week one of my impeller trailing edges is bent now and one of the brass stator veins took a hit but the pump still works pretty well, hole shot is still there arguably may not be quite as strong. I'm sure when I remove the pump and blue-print it, I'll probably notice some improvement but it's still works well.

So, my GUESS is your impeller isn't causing any problems although the leading edges could be dressed up a bit, which is what I'm going to do to mine, and I will also straighten out the trailing edge of the bent blade along with a new wear ring while I'm in there.

I still suspect if yours won't take throttle without losing hookup, then it's ventilating the prop and you've got an air leak somewhere. I don't think mine's leaking air but will probably also install a new carbon seal and bellows while I'm in there. The only parts I've bought so far are the bellows and neoprene seal, still need the carbon seal and wear ring before I tear it apart.

Water's starting to lose temperature here, now 75* from 84*(10 degree loss) and nobody wants to play in the water now, so need to get busy(I guess).
 
Im doing the exact same thing but still need to get the bellows, carbon ring and new driveshafts. :(
 
Guess the old owner used it in salt, rusted bad and am told its very hard to slide off and back on when you change the seals.
 
pwgsx said:
Guess the old owner used it in salt, rusted bad and am told its very hard to slide off and back on when you change the seals.
Click to expand...

Well maybe. My boat lived in salt too, fortunately the PO must've hosed it off up and down after hauling it out but the drive shaft does have a bit of light rust on it. So I tried successfully, to slip the stainless ring backward toward the jet pump, and I was satisfied I could remove the c-clip, so I think I'm good on the drive shaft.

Don't forget to remove that clip that keeps the stainless ring from sliding forward before dismounting the pump, else it's a b**ch removing the drive shaft.
 
So you all believe my issue would be an air leak? I checked the tightness of my Carbon seal and it seems to be good from what I can tell. I guess my next step would be to re-seal my ride plate? My top speed hasn't been compromised... I've got 46mph via gps.

Any suggestions would greatly help!
 
I doubt its your rideplate. Have you fixed the inlet cleaner thru hull fittings/ seal yet? I know mine was sucking air in thru there.
 
I've got the parts ordered. I attempted a short term silicon fix, but I guess the "Low pressure" area is very low in that area, b/c there was no evidence of any silicon when I loaded here back up. Haha. I wouldn't think that a hole that small would cause the amount of cavitation I'm having.


I'll report back when I have that fixed.
 
If it sucked your silicone out its sucking air into the pump I would think. I would get that fixed and then check before doing anything else. Do you have a lot of grey dust around your carbon ring on the hull?
 
From your pics your wear ring looks fine. Has to be your carbon seal. Is it happening on both engines?
 
pwgsx said:
From your pics your wear ring looks fine. Has to be your carbon seal. Is it happening on both engines?
Click to expand...


This is a 2005 Challenger with a 215 hp Rotax.... it's single engine boat.

If sealing my "grate actuator" doesn't fix it then I may try a carbon seal next. Thanks for the replies!!
 
SLOWBRAH said:
This is a 2005 Challenger with a 215 hp Rotax.... it's single engine boat.

If sealing my "grate actuator" doesn't fix it then I may try a carbon seal next. Thanks for the replies!!
Click to expand...

Yeah, I agree with the direction of this thread, check for anything that could be allowing air into the pump that would allow the impeller to ventilate. Could even be the pump mounting neoprene seal ring if they used one there.

I have to stop posting suggestions for a while, or slow down dramatically, I was just told that my 17 posts per day are interrupting the flow for the premadonnas, LOL.
 
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