Blown Viper Motor. Diesel fuel.

[Sasquatch]

K I have to chime in! A mile is covered in less then a minute at 100mph you are almost at 2 miles a minute so a mile run is just over 30 seconds at full song alowing for backing off cause the shore is coming up real fast and the take off time to full song! Now if you can't pin it for 30 seconds why bother to spend the money on a turbo. I can see if you want to run on the ragged edge but the pics don't lie the sled was rich on two lean on one. To me that is either a dealer error in install of a Factory flaw in equipment.

And I only said that Nytros are cold riding and to damn twitchy to enjoy! Now an Apex hey it just fits me, well after I bought the biggest windshield and the lower wings for it. 2014 Apex XTX for 12700 turbo it and sell that Catamaha.

A side note Turbo Don runs a mile flat out with his Turbo Apex at the Ballliker in Lac DU Bonnet along with all the other turbo sleds, Nytros, Vipers including some Cats cranked up to 300hp. Top speeds of 136mph! Can't pin them for a mile? Really!

 

[Sasquatch]

Unless it's strictly a mountain sled running high elevation, how can anyone hold these things wide open for 1-2 minutes, my turbo viper is at 105-110 mph in 10 seconds, why in gods name are people holding turbo sleds at wot for miles across a lake? Anyone can say that it "should" hold up on long runs, but what's everyone's reasoning of why it should hold up? Cuz we want it to? Long wot runs cause the intake to keep getting hotter and hotter, and without an innercooler there's nothing cooling that air down, and hot intake charges temps can be the death of a boosted sled, especially a high compression engine like the viper with the aggressive ecu setup.

Who said miles? See to prove your point you jump to miles when it was a mile or as I have said just a tad over 30 seconds. Course the vid shows maybe 4 miles at WOT

 

[Tricky Nick]

K I have to chime in! A mile is covered in less then a minute at 100mph you are almost at 2 miles a minute so a mile run is just over 30 seconds at full song alowing for backing off cause the shore is coming up real fast and the take off time to full song! Now if you can't pin it for 30 seconds why bother to spend the money on a turbo. I can see if you want to run on the ragged edge but the pics don't lie the sled was rich on two lean on one. To me that is either a dealer error in install of a Factory flaw in equipment.

And I only said that Nytros are cold riding and to damn twitchy to enjoy! Now an Apex hey it just fits me, well after I bought the biggest windshield and the lower wings for it. 2014 Apex XTX for 12700 turbo it and sell that Catamaha.

LOOK AT WHERE YOU ARE POSTING AT. THIS IS THE MOUNTAIN SECTION WE ARE NOT LAKE RACERS. Most of us could care less about going 100mph plus ACROSS A LAKE. Yes the OP was lake racing when this happened but most of us are turboing these sleds to ride mountain. A turbo sled will take you a lot more places in the mountains than a N/A sled will take you. It takes a lot of power to spin a 162in track up a near vertical face in 6ft of pow. AND YESS IT IS POSSIBLE TO DO A LONG WOT PULL WHILE MAKING YOUR WAY UP A MOUNTAIN.


I will Agree with you on one point. There is no reason to turbo a trail sled IMO

 

[Studroes144]

Who said miles? See to prove your point you jump to miles when it was a mile or as I have said just a tad over 30 seconds. Course the vid shows maybe 4 miles at WOT

The guy asked how long is too long..1 mile? 2 miles? My response stated that unless you're a mountain rider, why are u holding this sled wide open on a lake for several miles, I'm sorry but that's just plain dumb, coming from someone that owns a turbo viper, I know that with stock clutches and gearing you should be able to run 110 mph in less than 15 seconds or in roughly a 1/4, my sled with stock clutches and gearing does just that and it's totally shifted out, it's actually done gaining any speed at less than 1000', but still people want to hold them for miles!?

 

[Rev-it]

It's not wanting to, it's what they have been provin too. I said one or two mins. I was to the bar for less then a min or roughly a mile.
And it has the recommended clutching set up by the dealer and it was geared up and a 1.75 track since you don't need to run a 2.6 track in the early snow. It holds 9000 no rev limiter then back 9000.
Yes it was the first time holding it to the pin other then short blips.
Other then back firing at start up cold a lot. I was told that is a viper issue. It's ran spot on no hick up burbles over reving. Nothing. Once warm, till that run.

 

[matt@mpi]

All this talk about no long WOT runs doesn't seem right. looks like MPI tested for long WOT runs at or near sea level already.

http://www.ty4stroke.com/threads/a-little-different-dyno-test-with-mpi-turbo-viper.129472/

That was one of many runs that were made at WOT over several days. So many variable can go into the failure. It's hard to comment on what happened without knowing more details?

 

[Sasquatch]

LOOK AT WHERE YOU ARE POSTING AT. THIS IS THE MOUNTAIN SECTION WE ARE NOT LAKE RACERS. Most of us could care less about going 100mph plus ACROSS A LAKE. Yes the OP was lake racing when this happened but most of us are turboing these sleds to ride mountain. A turbo sled will take you a lot more places in the mountains than a N/A sled will take you. It takes a lot of power to spin a 162in track up a near vertical face in 6ft of pow. AND YESS IT IS POSSIBLE TO DO A LONG WOT PULL WHILE MAKING YOUR WAY UP A MOUNTAIN.


I will Agree with you on one point. There is no reason to turbo a trail sled IMO

K simmer down! Same difference Lake or mountain I have watched many a sled doing a full throttle climb that lasted for as long or more then a run across a lake. Which is the OP's point! Why the hostility?

 

[Tricky Nick]

Why the hostility?

No hostility i just like using capital letters. Makes me look like im yelling like Samuel Jackson lol

Back to topic. WOT runs not the issue imo. rather as stated above looks like a problem with a fuel system components ie injector

Question for OP: did the engine ever eat coolant. Did you check the coolant level before taking it to your dealer

 

[Mountaintech]

I will Agree with you on one point. There is no reason to turbo a trail sled IMO

Now that is a stupid statement if I ever saw one.

 

[Tricky Nick]

Now that is a stupid statement if I ever saw one.

Im sorry you feel that way.

 

[Sasquatch]

Now that is a stupid statement if I ever saw one.

No hostility i just like using capital letters. Makes me look like im yelling like Samuel Jackson lol

Back to topic. WOT runs not the issue imo. rather as stated above looks like a problem with a fuel system components ie injector

Question for OP: did the engine ever eat coolant. Did you check the coolant level before taking it to your dealer

Ah you only want to look hostile! Kinda like Samuel Jackson, just an actor who is trying to be someone he is not! LOL!

As for agreeing with me about trail sleds not having turbos! Nope nowhere did I ever say that! Way to many friends running turbo sleds on the trails! I may be one myself as I'm thinking a turbo would be real nice on my Warrior!

 

[cacsrx1]

Unless it's strictly a mountain sled running high elevation, how can anyone hold these things wide open for 1-2 minutes, my turbo viper is at 105-110 mph in 10 seconds, why in gods name are people holding turbo sleds at wot for miles across a lake? Anyone can say that it "should" hold up on long runs, but what's everyone's reasoning of why it should hold up? Cuz we want it to? Long wot runs cause the intake to keep getting hotter and hotter, and without an innercooler there's nothing cooling that air down, and hot intake charges temps can be the death of a boosted sled, especially a high compression engine like the viper with the aggressive ecu setup.

If this is the case Yamaha needs to add another warning sticker...."This snowmobile is not intended to be used as a snowmobile. Please refrain from using the throttle in an aggressive manner. Yamaha is not responsible for product failure do to its actual intended use."

 

[hlmrx1]

So this sled has always backfired when starting cold. Emptied the oil tank twice. Now ate a big hole in one piston and no warranty, no explanation as to why they think the sled they sold with the Yamaha approved turbo with less then 500 miles did this. Dealer has no clue. So I sit and wait for the last two weeks as to why it blew up and what I am going to do with this $18,000 sled that isn't going to be ridden this year.View attachment 105546View attachment 105547

K I have to chime in! A mile is covered in less then a minute at 100mph you are almost at 2 miles a minute so a mile run is just over 30 seconds at full song alowing for backing off cause the shore is coming up real fast and the take off time to full song! Now if you can't pin it for 30 seconds why bother to spend the money on a turbo. I can see if you want to run on the ragged edge but the pics don't lie the sled was rich on two lean on one. To me that is either a dealer error in install of a Factory flaw in equipment.

And I only said that Nytros are cold riding and to damn twitchy to enjoy! Now an Apex hey it just fits me, well after I bought the biggest windshield and the lower wings for it. 2014 Apex XTX for 12700 turbo it and sell that Catamaha.

A side note Turbo Don runs a mile flat out with his Turbo Apex at the Ballliker in Lac DU Bonnet along with all the other turbo sleds, Nytros, Vipers including some Cats cranked up to 300hp. Top speeds of 136mph! Can't pin them for a mile? Really!

Charlie, we don't even bother holding it wot for the whole run, I just lay on it when coming up to the radar gun, things come at you pretty quick at 136mph, and I can hit that in 1320' with good traction. I would probably not want to hold mine at wot across a lake (depends on the length of the lake) but I would hold it for too long. That being said, I would never run a boosted sled without gauges a I had the same thing happen with a brand new Apex bought turn key from reputable performance shop in the USA and he blamed the detonation on poor fuel (which was not). When we tore things down we found out how poor the workmanship was and that the waste gate was hitting the gas tank and therefore was running 18psi boost as oppose to 10psi that it was set for. I could go on but, in the end it ended up costing me a pile of money and all I can say is that this shop won't see another $ out of me.

Rev-it, I have no experience with the new Vipers or their boost kits, but I noticed you said in your first post, "Emptied the oil tank twice", what do you mean by that, was it pushing oil? If so, then that may have been the precursor to your problems. It wouldn't take long to burn things down with no oil. It sounds like you have gauges as you stated 5psi boost later in the thread. I'm no judge here, but I think your dealer should be backing you up and Yamaha should probably cover this at least for PR reasons. They should seriously look at it and give you a good reason not to cover it. 500 miles is not a lot.

 

[TD Max]

So this sled has always backfired when starting cold. Emptied the oil tank twice. Now ate a big hole in one piston and no warranty, no explanation as to why they think the sled they sold with the Yamaha approved turbo with less then 500 miles did this. Dealer has no clue. So I sit and wait for the last two weeks as to why it blew up and what I am going to do with this $18,000 sled that isn't going to be ridden this year.View attachment 105546View attachment 105547

I see a bit of progression of the wash pattern from end to end. I believe the TB's are railed together? Does the fuel line happen to fill the rail at the opposite end of the cylinder that failed?

 

[Sasquatch]

Rev-it, I have no experience with the new Vipers or their boost kits, but I noticed you said in your first post, "Emptied the oil tank twice", what do you mean by that, was it pushing oil?

Its a Viper thing puking out the oil. Not related to the meltdown, lots of people posting about this little glitch! It was about a 30 second run of WOT!