Yamaha Jet pump all-stainless wear ring assembly

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PSG-1
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Yamaha Jet pump all-stainless wear ring assembly

Post by PSG-1 »

For those of you who are running yamaha PWC jet pumps in your boats, this may interest you.

If you've dealt with the problem of corrosion causing the stainless liner to swell, this is the answer to the problem:
Screen Shot 2015-05-14 at 8.31.56 PM.png

Now, before you say that's a lot of money....check out the OEM price (part #10), for the inferior aluminum model with a thin stainless liner, which is just going to do the same thing again......
Screen Shot 2015-05-14 at 8.34.47 PM.png

My wear ring has a high spot, and the impeller is clanging and banging like crazy. So, I ordered an all stainless one. It arrived today.
IMG_0600.JPG

You can clearly see this is a one-piece design. No pressed-in liner, it's solid stainless.
IMG_0601.JPG
IMG_0602.JPG
Now I'm just waiting on my new impeller from Impros, then I can take the pump apart and replace the impeller and wear ring, and get going again.

Here's a link to the site I ordered the stainless wear ring from:
https://www.atlanticjetsport.com/index. ... ail&p=1711
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Last edited by PSG-1 on 14 May 2015, 21:06, edited 1 time in total.
ALUMA-JET project:
https://www.tinboats.net/forum/viewtopi ... 21&t=22023


Fishing, jet skiing, target shooting, jet-boating, and even a little oyster harvesting with Larry The Cable Guy.
Watch it all right here:

https://www.youtube.com/user/HKPSG1Shooter?feature=mhee

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Bookerf
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Yamaha Jet pump all-stainless wear ring assembly

Post by Bookerf »

Nice, post a pic of the impeller when it arrives.

amk
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Yamaha Jet pump all-stainless wear ring assembly

Post by amk »

Nice I was considering the same let us know if you get any improvments

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PSG-1
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Yamaha Jet pump all-stainless wear ring assembly

Post by PSG-1 »

Got my impeller from Impros today.
IMG_0617.JPG
Solas Concord YD-CD 14/20, re-pitched to 14/21.



Just to show how short the driveshaft really is in my boat. Also notice the wrench flats milled into the shaft. This is necessary for impeller and driveshaft coupler removal.
IMG_0618.JPG

Old impeller and wear ring, Solas YD-CD 13/19. Compared to the new impeller and wear ring, this one has a lot of clearance. Probably losing about 2-3 MPH because of it
IMG_0619.JPG

This one shows the high spot caused by crevice corrosion between the thin stainless liner and the cast aluminum body of the wear ring.
IMG_0620.JPG
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ALUMA-JET project:
https://www.tinboats.net/forum/viewtopi ... 21&t=22023


Fishing, jet skiing, target shooting, jet-boating, and even a little oyster harvesting with Larry The Cable Guy.
Watch it all right here:

https://www.youtube.com/user/HKPSG1Shooter?feature=mhee

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PSG-1
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Yamaha Jet pump all-stainless wear ring assembly

Post by PSG-1 »

This thread is posted under "outboard jets", when it should be under "inboard jets" .....as this part is for PWC jet units.
ALUMA-JET project:
https://www.tinboats.net/forum/viewtopi ... 21&t=22023


Fishing, jet skiing, target shooting, jet-boating, and even a little oyster harvesting with Larry The Cable Guy.
Watch it all right here:

https://www.youtube.com/user/HKPSG1Shooter?feature=mhee

okavango
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Yamaha Jet pump all-stainless wear ring assembly

Post by okavango »

Hi PSG
Have you run the new wear ring and impeller yet, any noticeable improvement?

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PSG-1
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Yamaha Jet pump all-stainless wear ring assembly

Post by PSG-1 »

I have not been on the water with the jet boat since installing the new wear ring and impeller. But I plan to test it out soon, and see how it does.
ALUMA-JET project:
https://www.tinboats.net/forum/viewtopi ... 21&t=22023


Fishing, jet skiing, target shooting, jet-boating, and even a little oyster harvesting with Larry The Cable Guy.
Watch it all right here:

https://www.youtube.com/user/HKPSG1Shooter?feature=mhee

okavango
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Yamaha Jet pump all-stainless wear ring assembly

Post by okavango »

PSG-1 wrote:I have not been on the water with the jet boat since installing the new wear ring and impeller. But I plan to test it out soon, and see how it does.
I notice you have the Wet Wolf Adjust-A-Thrust cone in your pump, please refresh your thoughts and opinion on this product.

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PSG-1
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Yamaha Jet pump all-stainless wear ring assembly

Post by PSG-1 »

The AAT cone does seem to make a difference in hole shot, and on top end. It uses a spring-loaded shuttlecock that moves back and forth, dependent on water flow through the pump. At low flows, the shuttlecock is retracted, allowing full water volume to flow through.

At speed, water flows through a small inlet in the cone, which causes the shuttlecock to move rearward, causing a very slight constriction of the amount of water flowing through the thrust nozzle, which increases top end by about 1-2 MPH. This constriction also helps keep the pump loaded with water a little better than with an OEM cone, which helps with hook-up in choppy water.

I ran my boat the other day to test out the new impeller and wear ring. Got up to 39 MPH at around 8500 RPM, but couldn't go any more on the throttle due to porpoising. If I had a passenger in the front, it wouldn't do that. But I need to make some kind of adjustment to my ride plate so the porpoising isn't an issue. Also found that my thru-hull bearing for the driveshaft has a slight leak..... :x :x :x Not enough to sink the boat, but enough that I wouldn't leave it docked in the water overnight. At some point I have to deal with that, too...and removing that bearing is a real SOB.
ALUMA-JET project:
https://www.tinboats.net/forum/viewtopi ... 21&t=22023


Fishing, jet skiing, target shooting, jet-boating, and even a little oyster harvesting with Larry The Cable Guy.
Watch it all right here:

https://www.youtube.com/user/HKPSG1Shooter?feature=mhee

okavango
Posts: 55
Joined: 08 Jul 2014, 02:17
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Location: Maun Botswana

Yamaha Jet pump all-stainless wear ring assembly

Post by okavango »

PSG-1 wrote:The AAT cone does seem to make a difference in hole shot, and on top end. It uses a spring-loaded shuttlecock that moves back and forth, dependent on water flow through the pump. At low flows, the shuttlecock is retracted, allowing full water volume to flow through.

At speed, water flows through a small inlet in the cone, which causes the shuttlecock to move rearward, causing a very slight constriction of the amount of water flowing through the thrust nozzle, which increases top end by about 1-2 MPH. This constriction also helps keep the pump loaded with water a little better than with an OEM cone, which helps with hook-up in choppy water.

I ran my boat the other day to test out the new impeller and wear ring. Got up to 39 MPH at around 8500 RPM, but couldn't go any more on the throttle due to porpoising. If I had a passenger in the front, it wouldn't do that. But I need to make some kind of adjustment to my ride plate so the porpoising isn't an issue. Also found that my thru-hull bearing for the driveshaft has a slight leak..... :x :x :x Not enough to sink the boat, but enough that I wouldn't leave it docked in the water overnight. At some point I have to deal with that, too...and removing that bearing is a real SOB.
Thanks PSG, I like the idea of the AAT cone and will include one in my next order from the States.
As mentioned in the my build thread I induced porpoising when I adjusted the ride plate to try improve reverse, I was amazed how easily this was corrected by bending the trim tabs at the base of the transom, certainly an easy and cost effective way to eliminating porpoising.

amk
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Yamaha Jet pump all-stainless wear ring assembly

Post by amk »

hows that ss wear ring paying off? I was considering getting an entire solas 144mm pump with ss ring and 12 vane stator if it would actually benefit me.

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PSG-1
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Yamaha Jet pump all-stainless wear ring assembly

Post by PSG-1 »

As much as it pains me to say it, I haven't been running my jet boat much this summer. :shock:
Performance with the new prop seems to be good, though.

I think the SS wear ring will finally 'pay off' in a couple of years, when I don't have to deal with the issue of corrosion causing the liner to swell, and having to replace the wear ring. Again, the price for the SS model is so close to the OEM, it makes perfect sense to go ahead and buy quality, and be done with it. As for the stainless pump/stator assembly....I would love to have one of those skat-trak magnum pumps with the 12 vane stator, but they want over a thousand dollars for it!!
ALUMA-JET project:
https://www.tinboats.net/forum/viewtopi ... 21&t=22023


Fishing, jet skiing, target shooting, jet-boating, and even a little oyster harvesting with Larry The Cable Guy.
Watch it all right here:

https://www.youtube.com/user/HKPSG1Shooter?feature=mhee

amk
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Yamaha Jet pump all-stainless wear ring assembly

Post by amk »

True I've found almost a $500 gap in prices between sites some have them 1500 and some 1100 but I will need a new pump soon and that pump is the same for 650, 701, 760, and 800 model yamahas so it's pretty diverse if I ever needed a new motor or scraped everything and wanted to sale. I just wonder if that pump would give me any performance improvements.

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PSG-1
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Yamaha Jet pump all-stainless wear ring assembly

Post by PSG-1 »

From my understanding, the 12 vane stator gives significant performance gains over the OEM model. And again, with me operating in saltwater a lot of the time, one of those pumps would be ideal, since it's made of stainless and would resist corrosion, not to mention less wear due to it being stainless and not cast aluminum.

I was doing some searching last night, and almost got my hopes up when I saw a yamaha 12 vane stator for about 500 dollars.....but it was a 144mm....... :cry: The 155mm is still about a thousand dollars.
ALUMA-JET project:
https://www.tinboats.net/forum/viewtopi ... 21&t=22023


Fishing, jet skiing, target shooting, jet-boating, and even a little oyster harvesting with Larry The Cable Guy.
Watch it all right here:

https://www.youtube.com/user/HKPSG1Shooter?feature=mhee

amk
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Joined: 01 Jan 2014, 08:52
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Yamaha Jet pump all-stainless wear ring assembly

Post by amk »

so you think that 12 vane stator would match up well with oem wear ring so I could buy in pieces?