Replaced 96 SPX wear ring. Quick question about impeller gaps.

[Pomoxis]

I just replaced the wear ring on my 96 SPX. I must give props to this site, as it went according to the plan, using a combination of tips garnered here.

I have searched and haven't really found an answer to this, so here goes. I have everything back together and tightened the jet pump back up similar to how you would put on a wheel, working my way across and around torquing the bolts. Now that everything is all back together, when looking in from the rear, it appears that the wear ring is slightly out of round. By that, I mean when looking straight in, there are gaps between the wear ring and impeller across one axis and little or no gaps across the other axis, if that makes sense. The wear ring I put back in is OEM.

Should this be a concern? I didn't want to run it without getting some opinions first.

Thanks in advance.

 

[LouDoo]

As long as the impeller is not touching (or even slightly touching) the wear ring and the gap is not larger than .025" you're O.K.

Lou

 

[Pomoxis]

Hard to say for sure but there may be contact and the gaps look larger than that. What would be the next move?

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[Jetskigoodies]

Did you buy an oem wear ring? I have bought an aftermarket one an it had a bigger gap than my bad wear ring. Only go with oem wear rings.

 

[Pomoxis]

I used oem wear ring.

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[LouDoo]

The only thing I can think of that would cause this is worn bearings in the pump, which means you'll need to pull the pump and rebuild it. It's not a difficult or even expensive, about $65.00 in parts and if you have the pump tools from Dr Honda, it makes it a lot easier.

http://www.a-lmotorsports.com/Products/18-bearing-press-tools-2-stroke-all.aspx

Lou

 

[Pomoxis]

I went through it when I had it apart. Bearings all good with no play in shaft.
Is it possible I torqued it too tight imparting distortion to the housing? I am going to try letting them all off a turn and see if anything changes and go from there.

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[LouDoo]

I just thought of something, I've done it and probably most guys on here have also, check and make sure that you didn't pinch either the thrust washer (no. 28) or the thrust bearing (no. 9).

http://fiche.seadoowarehouse.com/se...=268&b=16&c=0&d=-PROPULSION-SYSTEM---EXTERNAL

Lou

 

[OldSchool]

I just thought of something, I've done it and probably most guys on here have also, check and make sure that you didn't pinch either the thrust washer (no. 28) or the thrust bearing (no. 9).

http://fiche.seadoowarehouse.com/se...=268&b=16&c=0&d=-PROPULSION-SYSTEM---EXTERNAL

Lou

Good call Lou, that would surely result in that symptom. On assembly, after setting the shaft bearings in the pump, I used to put the aft end of the shaft in a vise, then slide those thrust components on prior to sliding the pump on the shaft. That way you can just spin the prop on and torque it nicely from the top. I thought it would never pinch that way.

I was wrong, it can still happen, but if you look at the threaded end of the shaft sticking through the pump, you should be able to sense whether or not those pieces are seated properly. Of course if you are flat rate, this can be overlooked as I am a member of that club myself.

If it happened, if I recall correctly that meant curtains for the thrust bearing.