Jet pump question

[digvid]

OK, to start off I purchased a 2000 seadoo GTI with a 720 motor.
I originally thought the motor was seized (I knew this when buying) so I pulled the motor out of the ski and I then grabbed the balancer and it turned over with no problem at all with no effort (had the plugs out) hard to turn with the plugs in of course. So then I checked the shaft and that was the problem all along, it will not turn with out a lot of effort. I guess the bearings are frozen on the jet pump.
So my question is, where can I get an OEM rebuild kit and does the shaft have a bearing I need to replace?
Also I might as well get new boots while its all apart, is there anything else I should replace while everything is torn apart


Thanks for any help.

 

[Robj]

I bought my pump rebuilt kit from SBT, everything you need to do the job can be bought from them. I would take the pump apart first, it may need more than just a rebuild kit. Don't need to go OEM IMO.

 

[Jetskigoodies]

You may want to buy this tool as well. One of the forum moderators produces these.

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

 

[digvid]

OK thanks for getting me started, I'll let everyone know how I did.

 

[Dr Honda]

You may want to buy this tool as well. One of the forum moderators produces these.

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

Thanks for the advertising. :thumbsup:


Digvid: The tools aren't 100% necessary... but it makes life easier. Also... since the pump shaft is the inner bearing race... if the bearings are rusted, and seized... then yes... you will need to change the shaft. If it's rough... then it won't seal, or it will chew up the new bearings.

 

[digvid]

OK, I pulled the pump off today. The bearings are rusted and that was the reason it would not turn.
I pulled everything apart and the bearings are still in one piece, the shaft did have some rust on it but only on the center section the spot where the bearing sits looks good (I will post a pic later) the cone on the end I don't think it ever had oil in it, it was like the desert lol. Worst case what will a used shaft run for the GTI.
Thanks

 

[Jetskigoodies]

I may have a whole housing that I can sell you for $60 shipped. Let me check. I will upload some pictures around 5pm. You will not have to do anything but put your impeller in it.

 

[Robj]

JSG, you are giving that pump away for $60 shipped. If I didn't already have a spare I would be buying it. That is a killer deal.

 

[Coastiejoe]

That is a very good deal. Nice of you to do so,,,

 

[digvid]

JSG, i think i might take u upon that deal. if u could post a pic i would appreciate it..

 

[Jetskigoodies]

Ok I have a bunch of complete pumps but here are the 2 housings without impellers. The plastic one will be $60 shipped and the other pump will be $75 shipped. The plastic one has a better wear ring. The brass pump does have a cone too I was just showing what the inside looks like.

Here is the plastic one, the scrapes on the wear ring are very shallow, my finger nail will barely catch, still very usable. All the veins are perfect

Here is the brass pump. I would change this wear ring
The veins are great, the bearing and thrust washer are good. I will get more pics of the outside of this pump but it is in the same shape as the other one.

I did not wash these up before the pictures. I did however drain the pump oil and pull off the cones to make sure there was not any water in these pumps.

 

[LouDoo]

Thanks for the advertising. :thumbsup:


Digvid: The tools aren't 100% necessary... but it makes life easier. Also... since the pump shaft is the inner bearing race... if the bearings are rusted, and seized... then yes... you will need to change the shaft. If it's rough... then it won't seal, or it will chew up the new bearings.

Doc is being too modest here, I've rebuilt pumps both ways, using sockets, extensions, pieces of pipe and whatever I could find. I've also used his tools, it's like night and day. All you need is a set of his tools and a dead blow hammer from harbor freight. It's the greatest thing since sliced bread.

Lou

 

[digvid]

So is there any advantage having the metal pump versus the plastic pump? Should I just stick with the plastic since that's what I have now

 

[Jetskigoodies]

Brass pump is more durable, if you suck up rocks it will not crack chip or break as easy. Before you make your desicion on it let me take pictures of the wear ring. I would replace the one on the brass pump it has gouges in it. If you decided to go with the brass one still I would cut out the old one for you. The plastic one is ready to be installed though.

 

[digvid]

OK well I think I might take the brass one then as long as the mounting flanges are the same as the plastic one.
What's your PayPal?

 

[Coastiejoe]

There were some studies done that said the brass gave better performance as well. They don't "give" as they are brass. This puts all the thrust through the pump.

How true???? I don't really know, I am only repeating what I read. They will take much more abuse than the plastic housings. Getting harder to come by...

 

[Jetskigoodies]

We have the brass ones in all of ours and we are going to be swapping everything from a 96 gsx into a 97 gsx for a personal machine and we will be putting a brass pump on it.

 

[bell99man]

I may have a whole housing that I can sell you for $60 shipped. Let me check. I will upload some pictures around 5pm. You will not have to do anything but put your impeller in it.

Which ever one is left I'll buy as long as it will fit my 97 and I'm pretty sure it will.

Kevin

 

[Jetskigoodies]

He bought the brass one, so the plastic one is left.