Warning, -16 late build Viper turbo breakdowns, bad rods.

[HURRICANE]

The 2015 engine will install inplace of the 2016 engine with no ecu swap

 

[kviper]

One thing that may or may not be an issue is load and unload under full power. Let's say you come over a small rise in the trail at WOT sled breaks traction and then lands hooking hard at WOT. I would suspect that would put a shock load all the way back to the source of the power (combustion chamber) ? This would not be duplicated on a Dyno! I know of a case where this was suspected on a big boost Apex that put a rod through the block!

 

[ntm_08]

The 2015 engine will install inplace of the 2016 engine with no ecu swap

What is your oppinion of the other new parts in the engine? Does it look weak compered to the old engine?

 

[HURRICANE]

Some of the mods are good such as joining the cam caps together for added suport

 

[titanrcr]

One thing that may or may not be an issue is load and unload under full power. Let's say you come over a small rise in the trail at WOT sled breaks traction and then lands hooking hard at WOT. I would suspect that would put a shock load all the way back to the source of the power (combustion chamber) ? This would not be duplicated on a Dyno! I know of a case where this was suspected on a big boost Apex that put a rod through the block!

Good point, I'm sure that would cause loads of stress on the crank and rods.

 

[kviper]

Allen you want to slam the break on under full power a couple times on the track Dyno to test this? LOL!

 

[WVTurboLTX]

I think that the rods become an issue in the short term at a certain level of hp. What is the short term level of hp? Well, it appears to be over the 190hp somewhere. Saying that, how do we test those limits? Also, what are the long term problems of the soft rods both boosted and stock? These questions are why we at hurricane performance have suspended turbo sales on these engines till we can find some concrete answers.
Guys will need to be careful in the future with there mpi upgrades on these engines. According to our dyno, the mpi trail turbo makes 141hp @4.5lbs boost. We turned it up to 158hp@6lbs boost. I can understand why the rods will take longer to break in the engines with mpi trail turbo kits compared to the hurricane 193hp@6lbs and the mcx 184@6lbs.these hp numbers are based on the engine making 130.2hp stock.
Also, we warrantied the engine for one year with the purchase of the hurricane 190hp turbo kits to address the thought of yamaha warranty with mpi turbo kits. This year however we have not extended warranty to the engines due to the success of several hundred hurricane 190 kits over the last couple of years. Also we are aware that the yamaha warranty states that the engine is NOT covered under warranty with the mpi trail turbo installed if engine damage occured due to boost.
I have to think that yamaha will quickly address the rod issue in future engines in 2017. I hope that yamaha will help the 2016 customers as the rods break over time in the near future. In the mean time, we at hurricane performance are working on aftermarket rods as well as a short term solution to the rods.
Dave marshall

I don't get how you can claim more HP at the same boost levels. If AFR is running the same and boost level is the same shouldn't the HP numbers be close?

 

[ViperNorway]

I really appreciate all the answer you give me.
Can I try one last one?

Is there any other parts I need to change over except the 15' engine itself?
Like any kind of electronics, the gauge, anything basically?
Thanks indeed

 

[HURRICANE]

There are many things that affect hp at the same boost such as the style of muffler, velocity stacks in air box and injector duty cycle. Also, as far as i can tell there is no reason that the 2015 viper engine wont bolt right in and run the same

 

[machzrobbie]

I say let the guys who are comfortable with running 190 HP with the new motors - get r dun and let the rest of us know how it works out!!!

 

[allyammies]

If anyone wants to give me their turbo kit ill take it!!

 

[chaleurphantom]

Okay so maybe I am just a tad too cynical and this is by no means meant to disparage Sunvang or any other person who is trying to spread information to all of us fellow riders. That is absolutely appreciated.

However everyone seems to be getting their panties in a wad over an email from a 3rd party aftermarket turbo supplier. Has anyone seen or even heard of a motor that is having issues? How do we know that 7 tons or 13 tons is not enough to survive use in an engine? I am not saying it is but then again I don't actually know. I am pretty sure that as Yamaha is using this motor on multiple platforms right now, that even if the snowmobile division did not do its due diligence that the watercraft or more importantly the ATV/Motorsports division did. They are putting a lot of effort into the new side by side and am pretty sure they did an abundance of destructive testing and tolerance tests. Could there be an issue with manufacturing? Maybe but through use of the Google machine the only mention I could find about this issue is this exact thread. We also need to remember that Arctic Cat has a bunch of these motors as well so the problem should be on multiple fronts.

Once there is some actual carnage that can be examined then we can move from there and work towards a resolution if one is actually needed. I have an MPI turbo that was installed by Yamaha and a 3 year warranty. If it blows up then they will be fixing it.

You might want to contact your dealer and/or your Yamaha rep. Apparently they are not paying out for repairs caused by the MPI turbo even if dealer installed. I was going to put one on mine when I purchased. I asked the question, "any problems?" And that's when the conversation turned to a non-payment by Yamaha for a failure. I contacted the Yamaha rep. and he would not confirm any payouts for warranty engine repairs on a turbo install. That being said; I didn't go with the Turbo.

 

[tator]

hey dave, your knowledge and testing on your kit and others is very valuable in a time like this. thank you so much for all of the info and the stellar customer service. i am so glad i decided to go with your kit. reading this forum should convince anyone looking to turbo a viper "early 16 and older that is" to choose your kit. thanks again.

 

[Byam]

I think that the rods become an issue in the short term at a certain level of hp. What is the short term level of hp? Well, it appears to be over the 190hp somewhere. Saying that, how do we test those limits? Also, what are the long term problems of the soft rods both boosted and stock? These questions are why we at hurricane performance have suspended turbo sales on these engines till we can find some concrete answers.
Guys will need to be careful in the future with there mpi upgrades on these engines. According to our dyno, the mpi trail turbo makes 141hp @4.5lbs boost. We turned it up to 158hp@6lbs boost. I can understand why the rods will take longer to break in the engines with mpi trail turbo kits compared to the hurricane 193hp@6lbs and the mcx 184@6lbs.these hp numbers are based on the engine making 130.2hp stock.
Also, we warrantied the engine for one year with the purchase of the hurricane 190hp turbo kits to address the thought of yamaha warranty with mpi turbo kits. This year however we have not extended warranty to the engines due to the success of several hundred hurricane 190 kits over the last couple of years. Also we are aware that the yamaha warranty states that the engine is NOT covered under warranty with the mpi trail turbo installed if engine damage occured due to boost.
I have to think that yamaha will quickly address the rod issue in future engines in 2017. I hope that yamaha will help the 2016 customers as the rods break over time in the near future. In the mean time, we at hurricane performance are working on aftermarket rods as well as a short term solution to the rods.
Dave marshall

I am REALY not sold to MPI and i know you make a great kit WAY MORE simple than MPI butt
I dont know what you did to get those number (141hp at 4,5psi)???? Bannana in the muffler! Lol;-)

Even if i am realy mad at Gforce who did my sloppy instalation, my sled on their DYNO was 175-180hp(500/1000ft alt) between 8700-8900 rpm....

So you realy say that the mpi trail kit would give only +11 hp ???

 

[WVTurboLTX]

I am REALY not sold to MPI and i know you make a great kit WAY MORE simple than MPI butt
I dont know what you did to get those number (141hp at 4,5psi)???? Bannana in the muffler! Lol;-)

Even if i am realy mad at Gforce who did my sloppy instalation, my sled on their DYNO was 175-180hp(500/1000ft alt) between 8700-8900 rpm....

So you realy say that the mpi trail kit would give only +11 hp ???

I don't see how those numbers are accurate considering every magazine that tested the trail kit showed that it is faster than the AC 1100 turbo that we know is almost 180 HP.