veemaks
Extreme
I don't think this has been shared. The new motor has been dynoed by by Arctic Adventures and DynoTech Research. The dynoed Thundercat made 211Hp stock. I'm only waiting for snow and my new Sidewinder...
veemaks
Extreme
160hp at 6400rpm 
Yamaporn
Expert
- Joined
- Feb 11, 2009
- Messages
- 238
- Country
- USA
- Snowmobile
- Sidewinder L-TX LE
Can't wait!
jdm
Veteran
- Joined
- Mar 17, 2004
- Messages
- 42
- Location
- Lake George, NY
- Country
- USA
- Snowmobile
- 850 G4
- LOCATION
- Lake George NY
jdm
Veteran
- Joined
- Mar 17, 2004
- Messages
- 42
- Location
- Lake George, NY
- Country
- USA
- Snowmobile
- 850 G4
- LOCATION
- Lake George NY
Dang --that motor sounds righteous !
krm
Lifetime Member
- Joined
- Apr 22, 2016
- Messages
- 859
- Age
- 69
- Location
- ny
- Country
- USA
- Snowmobile
- sidewinder 850 mxz,850xrs 850xrs 900t22Mach Z
hot box on it ,old news
Mighty
TY 4 Stroke God
- Joined
- Apr 17, 2003
- Messages
- 4,794
- Age
- 62
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- Grand Ledge Michigan USA!
- Country
- USA
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- 22 Mach Z
23 Sidewinder SRX
DSimps10
Pro
- Joined
- Oct 10, 2014
- Messages
- 160
- Age
- 32
- Location
- Oxford Michigan
- Country
- USA
- Snowmobile
- 14 Nytro XTX
looks fat, never really crossing 13:1 AFR, im sure this is because of warmer air temps as compared to winter though
Stigapex
Suspended
12,5:1 AFR is around perfect for 10 psi boost. Over 13:1 AFR is to lean. I never run over 12:1 AFR in my sled, when loaded over 18 psi
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Sent from my iPhone using Tapatalk
mike g
Extreme
The sidewinder did not make as much power.
Snowaddict
TY 4 Stroke Master
- Joined
- Feb 28, 2005
- Messages
- 1,107
- Location
- Menasha, WI
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX-LE
- mstahl88
So, you're saying my buddy is going to beat me? I just found out he got a thundercat. He gave me a ton of crap for not getting the Cat (he's a cat guy.) I figured the yamaha clutching and ecu were superior.
stevewithOCD
Yamaha, Make me Come Back
- Joined
- Jan 1, 2008
- Messages
- 3,363
- Age
- 57
- Location
- Live CT Ride MAINE
- Country
- USA
- Snowmobile
- 900 R
2006 Apex RTX
EXACT motor & sled. Only difference is clutches, ski's & colors. Yamaha has better warranty to deal with & better re-sale. Cat offers adjustable handlebars. That's IT kids! We'll see who clutched better. Some motors will have a little more & some will have a little less.
mike g
Extreme
So, you're saying my buddy is going to beat me? I just found out he got a thundercat. He gave me a ton of crap for not getting the Cat (he's a cat guy.) I figured the yamaha clutching and ecu were superior.
The sidewinder had 7 hp less. Both are preproduction units so don't worry about it too much now, that difference is easily made up with clutching or rider weight.
Mighty
TY 4 Stroke God
- Joined
- Apr 17, 2003
- Messages
- 4,794
- Age
- 62
- Location
- Grand Ledge Michigan USA!
- Country
- USA
- Snowmobile
- 22 Mach Z
23 Sidewinder SRX
The average stock Sidwinder should out run the cat due to clutching. But I predict few will keep them stock due to the ease of getting more HP out of them. Coming off a 2016 Turbo Cat, I'm not a fan of their Team clutching.
Snowaddict
TY 4 Stroke Master
- Joined
- Feb 28, 2005
- Messages
- 1,107
- Location
- Menasha, WI
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX-LE
- mstahl88
Actually, the dealer that I bought from sells both brands. He basically said, if you are a cat guy, go with the cat. If you are a Yamaha guy, go with the Yamaha. He also said the warranty and price were better for the yamaha.
