MPI supercharger reliability

[Broue]

There's a lot of post about MPI supercharger early shaft failure. (lack of oil?)

The problem is gone or still a concern?

Is MPI / Yamaha adress the problem?

What's the fix?

 

[m.schuey7]

I think it is lack of oil from what I've heard and read. I've added extra oil in my oil tank resivour as a precaution and I always warm my sled up gradually before I ride it aggressively, no issues so far but I have only logged about 500 miles on the kit

 

[Big_Phil]

I researched this before i bought my turbo.

It seems there was a design change in the bearing cartridge at some point, and those blowers were the ones that failed. Apparently this problem is fixed with newer blowers. MPI was not covering this under warranty, and neither was rotrex who is the supplier of the blower.

From what I understand, it was a fairly low failure rate, even on the affected blowers.

With that being said, I went with a turbo, and would recommend the same to you. They make more power per psi, less heat under the hood and use significantly less fuel.

 

[Broue]

Big Phil,

I want to keep the stock silencer (Quebec laws) so I decline the turbo option.

So my option is to get more of the engine (don't want to open it for a porting, hi compression piston, performance cam, etc) :
1) Headers, intake, clutch kit, etc...
2) Supercharger

 

[Big_Phil]

Ya if you want to keep it really quiet supercharger is prob your best bet. My kit has a trail muffler, and it's fairly quiet at idle but def makes some noise when you stomp on it. I've been stopped at spot checks 4-5 times this season and the cops never said anything about mine being too loud. But i don't know how they are with that in Quebec.

Once you ride a boosted sled you'll never be able to settle for a bolt on n/a. Lol.

I had the header/intake clutch pcv last year, definitely wakes the nytro up. NoT even close to boost tho.

Just keep in mind with the supercharger you'll get 140-150 to a tank at best. So you might have to factor in extra fuel

 

[mpi xtx]

Get a turbo. My MPI stage 2 kit only lasted 2000 kms before the supercharger bearings decided to go. Always was full of oil and always had the oil changed at the start of the season. The sled was not ridden a lot either. I now have a turbo and you can still make it quiet. My blower setup was way louder than it is now.

 

[m.schuey7]

Broue,

Using the stock exhaust and muffler with my kit, totally stealth. Your going to love it!

 

[Bpatch50]

Broue,

Using the stock exhaust and muffler with my kit, totally stealth. Your going to love it!

How many do you have on that setup?

 

[m.schuey7]

I have around 600 miles on my set-up with zero issues, prem pump gas. Going to upgrade the kit to 7psi over the summer 200 hp on pump gas

 

[Agman 57]

I have had my S/C set up for over 4,000 miles, no issues with the blower.

 

[alswagg2]

The PWC world runs superchargers is many configurations. Both on Yamaha and Sea Doos. We service both brands no issues on any. I know customers run WOT much of the time with nearly 0 warm up time. Yamaha has a wonderful SC on both the 998 cc 4 cyl and on the 1,800 cc 4 cyl.

 

[Big_Phil]

The PWC world runs superchargers is many configurations. Both on Yamaha and Sea Doos. We service both brands no issues on any. I know customers run WOT much of the time with nearly 0 warm up time. Yamaha has a wonderful SC on both the 998 cc 4 cyl and on the 1,800 cc 4 cyl.

The yamaha ones last a while, but those seadoo superchargers are the biggest piece of #*$&@ ever put on a production machine. (next to the seadoo 951 watercraft motor) Needs a rebuild every 100 hours, if it doesnt blow before that.

 

[alswagg2]

I am not a sea doo or any BRP fan but we have never had a problem with the sea doo SCs we only use synthetic oils