MPI turbo issues with Viper

John Cambell · Jan 12, 2015

First off. My title should read MPI turbo on viper. Issues. It is issue with oil spillage

Hithere. I am looking for a solution. I put a 180MPI turbo on my Viper. When I'm doing donuts in the meadows if I fall off and the sled slightly tips on its side it leaks oil all over the clutching and belts. You can guess what that leads to

Once the oil is on my clutch/ belts it takes pretty much 3 hours to burn off. It squeaks. Squeals. Barely moves at first. This has happened 2 weeks in a row, since I've had the sled basically.

Basically I bought a mountain sled but in reality I can only use it as a trail sled as it can't be on its side. And by on its side, I mean barely on its side, kinda leaning on the powder.

I have talked to Yamaha and they have let me know MPI knows of this issue. Also the rollover valve was not recommended from Yamaha as they have a high failure rate. Yamaha has been very good about it. Thumbs up for that. I'm just trying to get some info to hopefully solve my issue so I can start fully enjoying my sled. Thanks for any advice.

thamax · Jan 13, 2015

i would route your vent a different way and the roll over valves work awesome just make sure they are cleaned and lubed.

John Cambell · Jan 13, 2015

Thanks Thamax. Is the rollover valve something that is easy to check or clean before each ride?

MTN_VIPER · Jan 13, 2015

John Cambell said:
Thanks Thamax. Is the rollover valve something that is easy to check or clean before each ride?

John,

On Viper/7000 ROV kits with a quick prime switch, it's really easy to test the valve function.
Just turn the key on with the engine off (tether lanyard plugged in) and push the quick prime switch down. You should be able to see LED flash and you will be able to hear the valve "click" as it closes. If she "clicks" and the LED flashes, then your good to go!

Bill

up-high · Jan 13, 2015

All you have to do is pull the tether and the solenoid should close.

John Cambell · Jan 13, 2015

Thanks Bill. And if by chance it does fail, how do you start the sled to get off the mountain?

MTN_VIPER · Jan 13, 2015

The ROV system can be unplugged at the plug/play connectors that connect to the back of the ignition switch. Then just plug your OEM harness in to the ignition switch (effectively connecting the sled by to stock). The shut off valve is a normally open type of valve and will stay open, allowing you to continue on your ride.

The picture below is of the upper ROV wiring harness. Located in the Green square are the plug/play connectors that plug in to the back of the igntion switch.

greasemonkey3406 · Jan 14, 2015

A rollover valve wont do you any good when you are carving with the sled. Youre still gonna have oil spillage. Its meant only for when the sled rolls over and you pull the tether to shut the engine off and close the valve so it doesnt empty the tank.

julio · Jan 17, 2015

oil

greasemonkey3406 said:
A rollover valve wont do you any good when you are carving with the sled. Youre still gonna have oil spillage. Its meant only for when the sled rolls over and you pull the tether to shut the engine off and close the valve so it doesnt empty the tank.

he said it does it when he slips off and the sled is tipped, I assume it doesn't leak the oil while he is doing cookies so a valve should work as long as he pulls the tether.

julio · Jan 17, 2015

ps

In my opinion tethers are required equipment for sleds in the first place.. julio

thamax · Jan 17, 2015

Mpi Has is testing a solution to the oil leak problem! They are rerouting the breather line back to the motor and tee in a vent I am doing the same and seems to cure the normal riding situaton problems.

Shred4Ever · Jan 17, 2015

Yamaha should have went with MCX 190 kit rather than MPI - it's a far superior product IMO... Maybe they will c the light for next release.

sidehil · Jan 18, 2015

I'm stunned with MPI kit , I cant tell you a holes enough about them and can not get thru to the shop, it's good

)) Pro cousin helped with install really likes it to a lot, it's good to have a Polaris dick help with a Yamaha turbo install :

))) Phone call shortly.))))))))):face-icon-small-win

n2otoofast4u · Jan 18, 2015

^ wtf does that say?

blown addiction · Jan 18, 2015

MPI Turbo oil leakage

So can we get back on topic?/?

I really like the fit and finish of the turbo kit, that being said I think the oil breather is an issue. What I would like to know is if people are having this same issue stock. If there is an issue stock I wouldn't blame MPI, But I think the way the that the oil breather is run with this kit there is no possible way the oil can get back into the engine. It was the lowest point in the system it can suck it back that far up.

A breather should be the highest point, I like the idea of guys re-routing the overflow line back to the engine that seems like the best idea, if the sled tips side to side it would be unlikely it would run out the breather unless tipped complete upside down then that is where the rollover valve should take effect.

Just from my personal experience, I ran the hell out of it yesterday and had it every way except completely upside down, completely vertical and several times all the way on its side while I lost about a teaspoon of oil when it mixes with the water melting in the belly pan it makes one hell of a mess. I am thinking about either installing a catch can and teeing the breather up a bit higher but I have all the panels off gonna fix it now.

TApeX_07 · Jan 18, 2015

blown addiction said:
I am thinking about either installing a catch can and teeing the breather up a bit higher but I have all the panels off gonna fix it now.

Any chance for some pics?!?

blown addiction · Jan 20, 2015

viper leak

After seeing the guys re-routing to the inspection port I am trying to locate a fitting and I will re-locate the air oil seperator instead of using a catch can setup. so I will post pics as soon as I can get my hands on a fitting

thamax · Jan 21, 2015

Let me know if u need the fitting have a local source

madmax · Jan 22, 2015

Any of the four strokes with a dry sump oil system and external tank can spill oil when tipped over. The 1100turbo and M7000 both do it, has nothing to do with the MPI kit. The ROV is the best way to fix it.

yamahajohnson220 · Jan 22, 2015

madmax said:
Any of the four strokes with a dry sump oil system and external tank can spill oil when tipped over. The 1100turbo and M7000 both do it, has nothing to do with the MPI kit. The ROV is the best way to fix it.

Wrong and wrong

MPI turbo issues with Viper

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