Well I guess I'll either need to get new weights or add more boost! Since I have a 26 pulley sitting around I may as well add the boost.
FLYBYU
VIP Member
Then you might as well do the fuel upgrade.
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full tilt viper
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27tx28b will give you on a very cold day 6.5 lbs at 8900. Run it around -5 same clutching wont pull the rpm 8600 which pulls down boost to 5.5 . If you want 7-8 lbs you need a 29b. been there done that it is bang on 7.7-8 lbs. I run in southern ontario at 350'
Full Tilt- you are spot on! 27t/28B is exactly what you say. 6.5lbs!!!! I was told that 27/28 would get me to 10 and its not even close. I guess i'll need to get a 29 for the bottom and run 26t/29b and hopefully get close to 10.
full tilt viper
Pro
- Joined
- Dec 25, 2009
- Messages
- 142
- Reaction score
- 18
- Points
- 988
- Location
- Ontario
- Country
- Canada
- Snowmobile
- Nytro MPI Stage 1
27x29 will give you close to 8 with good rpm. 25x29 which i ran on my old sled will give you a solid 9-10
FLYBYU
VIP Member
Like it says though! 8900 RPM. If you don't get that first your going to chase your tail. Been there done that.
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