snowman 700
Pro
- Joined
- Oct 10, 2005
- Messages
- 166
- Location
- Mid-Michigan
- Country
- USA
- Snowmobile
- 2011 Apex SE
2012 Vector (wifes)
Seeing Over 120 mph, Gearing specs, chain case changes, boost pressure and other thoughts.
Check out his blog http://snowmobiles.yamahablogs.ca/
Check out his blog http://snowmobiles.yamahablogs.ca/
Last edited:
DoktorC
TY 4 Stroke Master
That's a lot of good news in there....
bleedyamaha
TY 4 Stroke Master
- Joined
- Sep 28, 2013
- Messages
- 1,492
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- Northern Iowa
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- USA
- Snowmobile
- 2017 Yamaha Sidewinder Rtx Le 2012 Yamaha Vector Ltx
Nice read
ROCKERDAN
OCD Sledhead
- Joined
- Oct 8, 2005
- Messages
- 7,503
- Location
- Huntsville Ontario & Niagara NY
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- Snowmobile
- '18 RTX 50th "Winder"
CR is the best, I never miss his blog and really loving the new SW info!
Great news on the chaincase updates and testing sounds solid.
Dan
Great news on the chaincase updates and testing sounds solid.
Dan
sxr70001
Lifetime Member
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- Dec 4, 2010
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- 1,129
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- Michigan
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- Sidewinder LTX SE
SR Viper RTX SE
The more I read the more I want one. Now to convince the wife.
tapex_07
TY 4 Stroke Master
- Joined
- Feb 15, 2009
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- 1,160
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- Snowmobile
- '10 Nytro MTX SE IMPULSE 174x3
'14 Viper XTX SE MPI 159x14x1.25
'07 Apex RTX SC2 MPI 128x1
12lbs stock. Niiice!!
langow
Expert
Can't be 12 psi stock, can it? That would put this thing well over 200hp in Stock form.
WVTurboLTX
TY 4 Stroke Guru
- Joined
- Nov 9, 2014
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- 878
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- 43
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- 2009 Nytro XTX
2017 Sidewinder LTX LE
Lower compression pistons means base engine is down on power.Can't be 12 psi stock, can it? That would put this thing well over 200hp in Stock form.
Big_Phil
TY 4 Stroke Master
- Joined
- Feb 5, 2014
- Messages
- 1,182
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- Wasaga Beach, Ontario
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- Canada
- Snowmobile
- Sidewinder RTX LE
Can't be 12 psi stock, can it? That would put this thing well over 200hp in Stock form.
Its prob 12psi or so stock. The Cat 1100 is about that too I believe. Its just a little peashooter turbo on it, prob makes less that 10hp per psi.
DC5
TY 4 Stroke Junkie
The 998 in the SxS only makes 112hp or there abouts at 10,500rpm, with 9:1 compression ratio at 8800rpm this motor is lucky to make 90-100hp without the turbo so 12lbs sounds about right.Can't be 12 psi stock, can it? That would put this thing well over 200hp in Stock form.
langow
Expert
I've been hearing 180-190hp. Even with lower compression and less RPM, 12psi would put it over 200hp I would think.
blueironranger
TY 4 Stroke God
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- Feb 3, 2009
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- Iron Range MN
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- 2014 Viper XTX
2009 Phazer MTX
12psi is probably at 10,000 ft where they say power finally drops off, that would put it around 9psi at sea level. We really can't base it off the SxS numbers since that probably has cams more tuned for power range that works well for the manual transmission. It only has 5% less displacement than the 1049 which equates to around 7-8hp if it was cammed similarly. Less than 10hp loss from the compression difference. So it should be around 115hp with not boost. I'd be very surprised if it pushes beyond 9psi at sea-level to make ~190hp
No way is it going to put out 200 hp and advertised at 180. 190 possibly.
kviper
VIP Member
12 psi MAX in stock tune!!! It was dynoed yesterday at dyno tech! Numbers should be out soon. Heard a rumor it was around nine at the dyno.
ROCKERDAN
OCD Sledhead
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- Oct 8, 2005
- Messages
- 7,503
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- '18 RTX 50th "Winder"
I heard its been dyno'd at 204hp. This sled will haul the mail.
Dan
Dan
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