155 mm jet pump differences question

[manolocross]

Ok so I'm in a rut and stuck. So my buddy wants me to help him get his 2000 LRV goin. So basic maintenance being performed. Gray fuel lines out, carbs exchanged for good used set because they were so bad throttle butterfly gets stuck at full throttle and doesn't retract to idle. So the good used set completely rebuilt using genuine mikuni soft parts. So then we get to the jet pump to check wear ring and change oil the jetpump is leaking oil and wearing is chunked and the impeller has a major ding in which one of the blades is severely bent. So my buddy opts to buy a rebuilt jetpump with a new impeller,new wear ring, rebuiltbearings and fresh jetpump oil. Also while I'm in there gonna change out driveshaft, carbon ring and boot. So I'm thinkin that all 951 jetpump are all the 155mm size and all the same. I guess they are not! Here is the original

Now here is the new rebuilt one....

The main difference is the lip that rests against jet pump shoe. They are definitely different depths! So the main culprit is the giant o ring that seals pump to shoe. It doesn't allow the pump to rest agains shoe so torquing of nuts distorts pump and locks it. I need help with suggestions of what I need to get this pump on because it might be inreturnable! I was looking at maybe using a foam neoprene seal like what is used on 140 mm jet pumps. Help!!!!

 

[Ankeneyou]

I know the 98 xpl pump was slightly different so not sure what other years. Look at the ears of the mount holes, I thing some were set back slightly. I'm heading to the FL meetup so can't look at mine until next week.

 

[Ankeneyou]

There are also 2 types of 951 pump seals. One for the lip and one without

 

[manolocross]

There are also 2 types of 951 pump seals. One for the lip and one without

What are the two types? Right now I have the giant Oring. I think I need the foam with adhesive....

 

[Mekanix]

If you have to keep the new pump you may have to have it machined down to match the original so that it fits into the pump shoe.

 

[manolocross]

Anybody else have any ideas?? As far as machining the pump.... I have never heard of that. [MENTION=64286]Mekanix[/MENTION] do you know of someone who does this?

 

[Matt Braley]

The early 4-Tecs used a 155 pump I think. You may have gotten into one of those. Notice the depth difference on the nose of the impellers.

 

[Matt Braley]

I accidentally bought a 4-Tec pump for my XPL and it fit like this.

 

[Mekanix]

I was thinking any machine shop could put the pump in a lathe and cut the outer ring down a bit so that it is the right diameter to fit into the pump shoe.

The only thing I can think of that could be a problem is how much the impeller sticks out of the old pump vs how much it sticks out of the new one.
Maybe measure from the end of the impeller to the mounting holes on the pump and compare the two. If they are both the same, its just a matter of
reducing the diameter on the new pump so it fit's into shoe properly.

 

[manolocross]

The amount that the impeller sticks out is an optical illusion. It's the same. It only a 1/16 of an inch off. But that is enough to distort pump and lock it up. Especially with a new oem wearing. It turns out I need some washers between pump and hull. Part number is 211200063.... also turns out it is no longer made,carried,distributed. I need these washers!!!!!

 

[Mekanix]

I wonder if Nick would have some. [MENTION=41828]Minnetonka4me[/MENTION].

 

[manolocross]

I just got some comin.... I will post results.

 

[Minnetonka4me]

Yeah the 98s were different than the 99s and up. The 98s used a different wear ring, seal, pump shaft.... Almost everything.

 

[Chester]

Nick is right. The 98's are different. They don't use a neoprene seal at all and you must use spacer washers between the pump and shoe. http://www.goseadooparts.com/oemparts/p/sea_doo/211200063/flat-washer
I'll post a picture later.

Chester

 

[manolocross]

Here is the kicker though.... the manual calls for "the right stuff" gasket maker to seal jetpump to hull! This is on a 98 gsx limited!

 

[Chester]

These are the spacer washer that are used for that pump.

Chester

 

[manolocross]

Yes I got those today and it worked good but it moved the jetpump ever so slightly of pump shoe and if I tighten jetpump with a piece of paper in between jetpump and pump support... I can pull paper out!
It calls for "the right stuff" sealant but I think it needs something else!

 

[manolocross]

Anyone has used "the right stuff" sealant on jetpump? I'm gonna have to bead this on thick... does it work?

 

[Matt Braley]

Yes I have a tube of it on me all the time and use it for lots of different things. It's the best stuff available.