Recent content by pilot650

Well it ran fine. I ran it about 10 miles in saltwater. Gauge indicated max speed 66, typical gauge reading at wot 61 mph. With the old pump and impeller it would read 50 mph at WOT with max speed 55. So about a 10 mph increase with the new impeller, wear ring and switching to the bronze pump.

The shaft that came in the bronze pump.

Interesting. Well I put mine back together and torqued everything to spec and it starts up OK and idles fine on the trailer, although I had to top off the battery to get it to start. I can’t confirm if the battery was a little low or if the driveline is a little tight. Planning to water test...

Hmm. I have not sorted it yet. Took the pump off thinking the neoprene ring might have been shredded and it was fine. Shaved off some pretty good pieces of the wear ring though. It is noted that the new impeller in the brass pump doesn't spin as freely as the old impeller in the plastic...

I looked in a manual and it says the pump to hull studs should only be 24 ft lbs which is nearly nothing. I'm sure I put them on several times more torque than that using an impact gun, which crushed the neoprene ring gasket making it bulge and get in contact with the impeller causing it to...

It wasn’t shaving until I tightened it more, which still has a gap between the pump housing and the hull. The shavings are rubbery so hopefully I just shredded the neoprene gasket. Maybe it says in the manual how to torque it but it seems you would want the pump on pretty darn tight. However...

Terrific! Well I tightened the pump up a little bit more, it’ll turn over and start but it seems the RPMs are a little slower like it under too much of a load. Go to the back of the ski and there’s shredded plastic, must be the new wear ring? Maybe the neoprene gasket getting shredded? What is...

I loosened the pump a bit and the engine will turn over now. However, when it runs it’s just as noisy as it was with the old pump even though everything is new, even a new pump housing. Could this mean the driveshaft is warped potentially? The thrust washer, is that the rubber nose cone on the...

I looked up pictures of the driveshaft and that looks normal. I took the new pump, new wear ring, new impeller, new neoprene seal, new tail cone anti rattle kit and installed it back into the ski. Plugged up the battery showing 12.5 V. Go to turn it over and it won’t turn over, just engages the...

Are the splines supposed to be tapered like this?

Hmm. I looked at the auction again and it was supposedly from a 2002 GTX DI. I have a 2001 GTX DI which has a plastic pump. Still should be an improvement from what I was working with if I can figure out how to change the wear ring. Even as it is there is much tighter clearance with the...

So I bought a used pump off of eBay supposedly from the same year and model but it has a brass stator. Steering nozzle seems to match up so I guess these are interchangeable but curious is this a newer version of the pump? Seems it would’ve been a good choice and be more durable being brass...

Will a pump rebuild kit suffice or is it because the vanes are chewed up that it needs to be replaced? And what you see would cause the sluggish acceleration?

The pump is much noisier when idling on trailer but quiets down with a little throttle application. I have two of these skis, and this ski is much slower to accelerate and has a top speed about 4 mph less than the one with the normal sounding pump. Engine runs smooth but it seems to be...