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haha, you got that right! My buddies have been known to drop major $$ on props throughout the years! And I'll admit to having gone through several before I owned the Yamaha.
Funny that you mentioned a gasket in the old thread. I don't ever remember that being mentioned on the videos I'd watch on the disassymbly of the pump.I used an impact driver for the 4 bolts....and my pump loosened up after a couple of nudges from a small rubber mallet. It is a really quick thing to do though....I thought it would be much harder. I had to re-pull mine as when I did it originally I didn't know I needed gasket maker to reassemble. Not sure it is absolutely required....but the specs call for it.
It is entirely possible you could lose some, but I can't imagine it being much. Imagine what the tollerences are between those parts.. how much air or water could blow between them (or get pulled through)? I'll bet the racing guys ensure they have gaskets....but probably not many more. @Cobra Jet Steering LLC do you?Funny that you mentioned a gasket in the old thread. I don't ever remember that being mentioned on the videos I'd watch on the disassymbly of the pump.
I sucked up some wood earlier in the season. I pulled the pump and removed the debris, inspected the impeller and wear ring (looked pretty good...pics below) and reassembled...no gasket. Didn't think about it at the time. Due to family issues, I've only been back out twice. The first time back out I was making a little lower than normal rpm's and my top speed was down about 10 mph (5 adult occupants). Before I went out the second time I pulled the plugs, checked the gaps (were a little tight) and reinstalled as they were new may 10 hours ago. Got on the lake, same thing...top rpm's were just over 7K and top speed a little under 40 (6 adult occupants). My son was driving and I (oddly) was sitting in the center of the rear seat. The amount of water coming up on my back was way more than normal. Had a lot to think about on the drive home.
I'm thinking the lack of seal at the impeller is my issue. I've read some on syptoms of a failed SC clutch and my issues are not as severe as what's described (top speed in the 30's for a ski and rpm's in the low 6k range). I really don't think my impeller looked bad enough to cost me 10 mph and wouldn't explain the loss in engine speed (links to pics below from my post when I pulled the plug). I surmise the slight loss in engine speed is inefficiency being cause by the lack of pressue at the impeller.