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Engine torque?

9686 Views 4 Replies 4 Participants Last post by  camshaw
Does anybody knows what is the TR-1 engine torque?
And at what RPM is the peak?

It looks like it's the same engine mounted on the new Waverunner VX 2016 and on the Viper snowmobile
A 1,049cc with 82.0 mm x 66.2 mm, but adjusted to SXS with a shorter bore (80mm vs 82mm) to stay below the 1.000cc limit

Plenty of info about the 112HP power, but nowhere info about the torque...

Anybody got info about it?!??
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Torque on these Yamaha triples is excellent. Here is a short article from Snowtech..

Here is a power and torque graphic for the Genesis 130 FI (fuel-injected three cylinder 1050cc four-stroke) found in the all-new 2008 Yamaha Nytro FX models.
The addition of fuel injection and the increase in displacement yielded a 16-horsepower gain over the Genesis 120 engine it is based on. “We built this engine with an eye squarely on the ISR Stock 600 Class rules�, said Yamaha Snowmobile Product Manager, Adam Sylvester. “We wanted the new engine to be fast-revving and powerful for both competition and for consumers. We got everything we had hoped.�
Yamaha brought a preproduction Genesis 130FI engine and a full-production Genesis 120 engine to (our old friend Olav Aaen) at Aaen Performance’s dyno testing facility for same-day, back-to-back testing in order to determine the extent of the performance difference.
Peak horsepower figures were 138.6 HP on the FX Nytro and 122.6 HP RS Vector. Both engines showed a very similar curve profile, holding their respective peaks for several hundred rpm.
Torque showed a similar gain, from the carbed 120 to the fuel-injected 130. The Vector engine showed a peak torque figure of 82.9 foot/pounds. The FX Nytro
engine pulled 94 foot/pounds at 7100 rpm. “That kind of torque is near what consumers have found in competitive big-bore 2-stroke engines in the past,� said Yamaha Snowmobile Marketing Manager, Rob Powers.
The Genesis 130FI engine also showed a huge gain in torque down in the low end. At 3500 rpm, the new engine posted nearly 72 foot/pounds of torque. That is a 17-point improvement over the Genesis 120 engine. “Consumers are going to absolutely love the high torque this engine puts out at clutch engagement,â€� added Sylvester. “The reason is this engine’s amazing low-end grunt.â€�
The torque curve is what you feel when you squeeze the throttle. The new fuel-injected triple comes alive quickly and with authority, delivering a wide torque delivery all the way from a grunting 5000 RPM, rising quickly and peaking at about 95 pound-feet of torque at around 6,000 RPM, remaining strong through the entire operating range.
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Hey guys, just do a little research, this particular triple 4 stroke series has been around since 2005, and I've been riding them on the snow since in Vectors and Nytros. Technically, it's 3/4ths of an FJR1300 engine. The 1049 is easy to push up to 150 normally aspirated hp in the sleds, boosted units can go crazy.
the new generation 3 cylnder watercraft motor produces 125hp at the crank but is 1049cc, the yxz is also bases on this design but is 998cc. So based on 8.39cc's per HP the new xyz should make 119 hp if all things are fair...now yamaha when producing numbers for carb and epa always errors on the conservative side and also gives fully heat saturated numbers, meaning they run it the hottest they can to make it burn the cleanest and combustion tempetures that are high always come up lower in rated HP..its safe to say the yxz is probably 119 hp at the crank my friends....the cam profiles are not maximized and either is the porting and mapping....There is alot more HP and torque available from this cross plain crankshafted motor....
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