Attack gt
Pro
- Joined
- Dec 28, 2010
- Messages
- 137
- Reaction score
- 19
- Points
- 718
- Location
- Damariscotta, Me.
- Country
- USA
- Snowmobile
- 2017 Sidewinder LTX
I bought mine as a left over. It is a 2014 LTX SE Red and Black! Had the 190hp MPI turbo installed at the dealer before I even sat on it. The day I picked it up, it had a coolant leak and had to go back before I put one mile on it. After that repair, I spent the next day Installing 144 trail studs, 6" double runner carbides, Mid height windshield, and touring bag. For the first 1200 miles, I must admit, I was not overly impressed with the top speed as 104 mph was all I could muster and my RPM's were only about 8500 to 8700 but would hit rev limiter briefly. Very impressed with handling and comfort. Great ridding sled! Messed with a 43 helix and it got better able to hit 8700 to 8900 RPM and less rev limiter weird huh. Still not overly impressed with top end but an increase to 106 mph. Installed a 45 degree helix at 6-3 installed AFR and boost gauge. Found my boost was only at 5#. Took two turns on the waste gate to get it to a strong 6# of boost and what a difference! Rarely hitting the rev limiter and 8800 to 9060. Top speed was 109. Not bad, getting closer. At this point, I had about 2000 miles on the sled and changed my GEMS settings slightly. Took an additional half turn on waste gate and blew my first belt at 2100 miles on sled. Changed belt and WOW!!! I was able to hit 115 mph! Very happy at this point. I have over 2200 miles on the sled and only a minor coolant leak and blown belt to show for it. Great Sled! No regrets. Going to put some dupont slides on it and clutch kit for next season. I highly recommend anyone with turbo get the gauges! AFR is critical as well as keeping the boost at 6#. You will likely find it is to low and can turn it up some. All you turbo Viper owners out there that are not happy with your performance, I understand but with a little tuning, you will be impressed! Who would not be happy hitting 115 mph?! LOL.
yamadoo
Yamadoo is a snowmobile ' aholic'.
- Joined
- Jun 3, 2003
- Messages
- 3,645
- Reaction score
- 1,501
- Points
- 1,753
- Country
- USA
- Snowmobile
- 15 Viper STX DX red/white- GPS and KING AIR suspension 4kmiles
13 Apex XTX 45 anniversary RED/WHITE/BLACK 3K miles
10 Vector LTX Blue 9kmiles
11 Venture GT 4k miles
86 SnoScoot(2) for grand kids
Sounds really fun.
Studroes144
TY 4 Stroke God
- Joined
- Oct 30, 2013
- Messages
- 2,897
- Reaction score
- 956
- Points
- 973
- Location
- Lowville, NY Tug hill snowmobiling
Was the 45 helix a yamaha helix or aftermarket helix?
Attack gt
Pro
- Joined
- Dec 28, 2010
- Messages
- 137
- Reaction score
- 19
- Points
- 718
- Location
- Damariscotta, Me.
- Country
- USA
- Snowmobile
- 2017 Sidewinder LTX
It was a aftermarket helix that my dealer had me try. not sure of the Manufacture.
Studroes144
TY 4 Stroke God
- Joined
- Oct 30, 2013
- Messages
- 2,897
- Reaction score
- 956
- Points
- 973
- Location
- Lowville, NY Tug hill snowmobiling
Gotcha, the aftermarket helix probably helped some with top speed, a lot of the aftermarkets would be machined a to allow the secondary to shift a bit more.
Attack gt
Pro
- Joined
- Dec 28, 2010
- Messages
- 137
- Reaction score
- 19
- Points
- 718
- Location
- Damariscotta, Me.
- Country
- USA
- Snowmobile
- 2017 Sidewinder LTX
Well I hope it helps anyone with clutching issues that will not be getting a clutch kit for their turbo Viper. As for me, I already took advantage of the spring sale on the clutch kit for mine. Going to have to wait till next winter to try it out though. Hopefully this kit will be a little more consistent and stay off the rev limiter. I certainly made huge improvement with the clutching before the kit so I hope I continue in the same direction. We will see next season.
Do not waste your time clutching it before putting on the Dupont slides. I put them on mine and now am constantly banging the rev limiter.
