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Is an all new YAMAHA FACTORY TURBO VIPER on the horizon??

And the new yamaha R1M has 230hp! Standard R1 is only 200

That would be even better. 230 hp is pretty damn respectable. And without boost. Less things to go wrong then.

The only down side would be loosing power with altitude. But that's not usually much of a concern around here. I don't think there's anywhere in the state that people ride much over 5000 feet.

Not that it really makes a difference, but I do like the sound of the R1 engine far more than the three cylinder. It just screams when it winds up.
 
And the new yamaha R1M has 230hp! Standard R1 is only 200

I don't know what they're doing to get 230 hp naturally aspirated, but I would think you could do a low boost kit and alleviate the loss of horsepower with altitude gain without having to mod the engine.

Maybe three pounds or so would put you around 250 hp and maintain that power regardless of what altitude you ride. If you could do that with pump gas and no engine mods, you'd have a pretty sweet setup.
 
A lower compression viper engine, maybe more like 9.5:1 pistons and cams that are designed for boost will make great rideable power. Especially because they can build a map that has timing and fuel control that will wake up even the slightly lower compression engine when off boost.
 
So what everybody with a new sled sled say on their questionair for that buck.i spent it on chew and booze:)))) should have saved and invested all those dollars and now I'd be rich. Well let's do it on SW Hood (junk) Reroute of oil lines over and over(junk) EVO quick release hood screws (junk) watching Chris and help use a crow bar on air box (junk) I will stop there because I dropped the money and all got was to watch you ****s ride
 
I JUST got that questionnaire in the mail last week.
Filled it out and mailed it in.
Still have the shiny new dollar bill on my desk!
 
I think rather than seeing Turbos in the future...Big Bore 4 Strokes may be a better way to go. Reliable result, manageable big horsepower in the 180 to 200 range.

DPG
 
I don't know If it's coming into the 4 stroke sled market anytime soon...But the guys in the MotoGp world almost all run big bore 4 strokes with modified fuel systems in there bikes and getting crazy reliable horsepower.....Talk about a sleeper under the hood.

DPG
 
The big bore route is not optimal for high elevation situations that we are in. For much lower tooling costs, you can add a turbo and go from 140 to 200 HP and be reliable. You can also use the same motor in the NA configuration for many different applications like Yamaha does and cut your overall costs quite a bit. A four stroke snowmobile right now is like a diesel pickup........no boost, no roost.
 
For the guys worrying about running the throttle electronically, you are worrying about a very limited issue. We have been running them in class 8 vehicles for millions of miles for over 30 years and there is very seldom a failure. I can see them upping the rail pressure on a direct injection 4 stroke for better anatomization of the fuel and thus requiring a little less oxygen to produce the power making them retain a few more HP at elevation. Running a big enough bore at elevation to keep up with even a pump gas turbo would be weight prohibitive.
 
th


That's a mighty big APPLE.
 
For the guys worrying about running the throttle electronically, you are worrying about a very limited issue. We have been running them in class 8 vehicles for millions of miles for over 30 years and there is very seldom a failure. I can see them upping the rail pressure on a direct injection 4 stroke for better anatomization of the fuel and thus requiring a little less oxygen to produce the power making them retain a few more HP at elevation. Running a big enough bore at elevation to keep up with even a pump gas turbo would be weight prohibitive.

Pretty stable technology by now
 
To bad this new beefed up -16 Viperengine doesnt hold up for a 190 turbo anymore, the rods are like overdone spaghetti!
:face-icon-small-dis
 
Are people bending rods or just leaning them out? The nytro rods were good to 17lbs....

Sent from my SM-G920V using Tapatalk
 
Are people bending rods or just leaning them out? The nytro rods were good to 17lbs....

Sent from my SM-G920V using Tapatalk

Check out the thread "you guys paying attention to this?"

The new rods are failing at anything above 190 horsepower. They are OK with the MPI trail 180 kit. So if we do get a factory turbo, it will likely be 180hp and not take too kindly to additional boost. Yamaha just lost a lot of potential buyers!
 
Hello all....new to the forum and recently purchased HCR 8 (used)and have been reading up on all the information I can find....but I have always been a Yamaha faithful.

Thought I would throw in my 2 cents....worst winter in Ontario for a long time so I am reading more than riding :(

The main reason Y made changes to the 3 cylinder was a "cost decision"...had to many different configurations that dollar wise was not making sense ....now that block has certain specs they use for Snowmobile/ side X side / watercraft.

I know there expectations for snowmobile sales in 2017/2018 ...and it's a pretty big jump, so there is something coming for sure ....and did anyone read the article with Brad Darling & Peter Smallmentew?....some strong hints there also.

Like all of you I want the lightest, best handling, give me that " wow" factor sled.....but those big sales increase can also come from the utility market that skidoo owns....who knows what's coming?

But if I can't ride I do enjoy the "what if" discussions .

Now off to do my snow dance for all the sled heads out there.

Cheers!
 
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