Best pump for 2023 Yamaha Superjet

[TubZy]

Any suggestions for an aftermarket pump for my 2023 yamaha superjet (4 stroke)?

I purchased two of these Solas before and they failed twice (first after a month and second time after a week). Looking into other options just not having any luck with them.

Solas Magnum Pump 144mm - Yamaha Superjet 2021+

Boost your watercraft's performance with the Solas Yamaha Magnum Pump SJ2021+ 144mm. Designed for high-performance applications, this pump features a computer-designed stator vane section for increased acceleration and top speed. Its high-grade stainless steel construction offers superior...

blowsion.com

 

[503701]

Are just the bearings failing? I'd have a hard time thinking that a stainless steel wear ring/stator that has no moving parts would fail. Got any pictures?

 

[TubZy]

Yeah bearings overheated/melted and failed twice and water got in. Yeah here are some pics.

There is also some speculation about the bore not being accurate in the housing but it was never measured with calipers or anything. So no ones knows why it keeps failing. Don't want to dump another $1K and have it break again after a week so would rather try another pump.

 

[TubZy]

Here is a video of the loud knocking/vibration you can hear from the pump right before it fails

https://imgur.com/a/M9jGZDE

 

[SteveC]

I can't see any grease residue ... did you clean it all off, or just not use any?

 

[TubZy]

I can't see any grease residue ... did you clean it all off, or just not use any?

cleaned off

 

[SteveC]

Just making sure.

 

[503701]

In line boring bushings for heavy equipment and general rule is a .001 per inch of bore of interference fit. If OD of bushing is 2" then ID of housing is1.998". I not sure if is the same for a roller bearing but id imagine its in the ballpark. Id say get new seals and bearings and open up the bearing bore in the pump some so they dont get so hot and burn out the seal letting water wash them clean.

 

[TubZy]

In line boring bushings for heavy equipment and general rule is a .001 per inch of bore of interference fit. If OD of bushing is 2" then ID of housing is1.998". I not sure if is the same for a roller bearing but id imagine its in the ballpark. Id say get new seals and bearings and open up the bearing bore in the pump some so they dont get so hot and burn out the seal letting water wash them clean.

The second pump that was put it had all new bearings and seals which we thought initially was the problem with the first one. Ended up failing even faster than the first one unfortunately.

Are there any other aftermarket pumps out or would fit for the 4 stroke SJ besides the Solas? Seems I can only find this Solas one and don't know any people using it either on the 4 stroke SJ for comparison.

 

[kevbo]

Use bearings with a C3 or C4 and make sure they aren't too tight in the housing. If they are overheating then they fit too tight.

 

[tomski]

It looks like you got the shaft.

 

[Roseand]

Watcon clearances these pumps. I'd have it clearances properly and run it. They can be reliable.

 

[Baja 252]

Watcon clearances these pumps. I'd have it clearances properly and run it. They can be reliable.

Watcon set up our pump, its been bullet proof for several years. Give him a call he knows how to set them up properly.