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Google must be broken for you. Here's 3 I found in 2 min. http://www.pwctoday.com/showthread.php?t=48736 Post 8 http://www.pwctoday.com/showthread.php?t=59367&page=4 Post 33 http://www.x-h2o.com/index.php?threads/major-porpoising-help.133027/ Post 7 You-"Please dont cut up your ski and...

Whatever man, I thought you actually had something constructive to say towards the post. You say my theories are conflicting but don't explain how? I don't ride full speed because its a superjet, I like freestyle riding, jumping boat wakes (chasing them is when the porpoising is annoying), and...

Then what do you suspect is the issue? -Its not weight (155lbs) -Its not rider error (been riding 5 years and I don't porpoise on my buddy's stock SJ at all) -Its not intake grate (have run with my scoop grate on and run with no grate at all, still porpoises) -Its not the ride plate. Tried a...

I just came to the conclusion this is likely my problem last year. Over winter I needed to do some other maintenance (midshaft rebuild, carb rebuild, replace some gaskets, fix some electrical gremlins, among other things). So they tray tear down was last on my list since it is rideable as is. As...

I only weigh 155lbs as is, so losing 25lbs isn't my problem. And I've ridden my friends stock RN superjet and I can ride it just fine, no porpoising at all. So its something with my ski. And he has the same porpoising problem when riding mine. Why would you recommend not cutting up the tray and...

I've struggled with porpoising on my ski since I've owned it. I don't go full speed often so it hasn't been a big deal, but it is still annoying at times when I do. I've own the ski for 5 years so its not just from being a newbie. I can get all of my weight past the bars and it will still do it...

Be careful with the cheap relays. I bought a cheapo off amazon just to test something and the first time I hit the start button it let the smoke out and welded shut. My starter was seized (which ultimately ended up being the problem) and it ended up melting the terminals on my brand new battery...

I've done a lot of what you've mentioned and it has reduced proposing quite a bit in my time riding. I would say 50 percent has been reduced by learning to ride correctly. And I agree these skis are more fun for doing tricks than riding at full speed, that's why I have really tried to fix the...

I don't have a stock grate or another to try so no I haven't tried another. I've just learned to reduce it through body position, and my body weight distribution.

I'm interested to see what you find out here. I also have the protec scoop grate and I even added their +90mm ride plate and I experience the exact same issue. In glass it porpoises a lot, but in chop it seems to ride much better. It also seems to go away if I do wide swooping carves as opposed...

Good to know thanks. And that may be it. It sounds like rattle in the pump area and I only hear it out of water at idle. Once I rev it a bit, the rattle goes away. My superjet is dead quiet in the pump though. I'll try starting it without the pump, then grease the splines, reinstall and see if...

Well I had it out again this weekend with the wear ring and new pump seal installed. It seemed better but now I'm starting to notice a slight hesitation in the low end. I think popoff needs adjusted. I originally had a 115 gram spring when I did the 701 swap and went to 95 gram. That cleared up...

Awesome man. Feels nice to figure out a problem and fix it on your own eh?

That problem is on my superjet. Put a new seal on that and swapped wear rings. I'll test it weekend and report back on that thread.

A pump won't vibrate or feel damaged when it's cavitating. It basically feels like a clutch slipping in car. The engine revs, but you don't get much thrust or movement. You want your pump to be pulling in nothing but water. If air is introduced into the pump area (from a bad pump seal, cracked...

When this occurs, does the engine rev up like normal but the ski barely moves? If so, that means the prop is cavitating. Have you checked the condition of the wear ring and impeller? Clearance from the impeller to the wear ring should be no larger than .5mm or .02". Also check the condition of...

Yes, it is installed.

So last night I reinstalled the skat trak impeller into the stock stainless wear ring and measured the gap, it was around .20mm to .25mm (.01"). So it seems the Hooker's overall diameter is slightly smaller than the skat trak, therefore increasing clearance to the wear ring. I then pulled the...

Yeah I really didn't want to booger up a fresh seal with silicone, I'll do grease. What about between the reduction nozzle and wear ring though? Is should that have a bead of silicone?

Yeah I have a new seal I'm gonna throw on today when I reinstall the pump, but the existing seal looks pretty fresh. Slight curling on one section of the seal but way better than the seal on my waveblaster. That seal is basically just the metal band and it doesn't cavitate at all lol. It's weird...