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View Full Version : `05 viper 90r 2 stroke?



jfwyatt
07-21-2009, 04:30 PM
my sons viper has lost power when climbing hills. the engine bogs istead of staying revved up like it used to. any ideas? ive checked copression its just as good as new and cleaned the carb which didnt change anything and the cdi is turned all the way up.

nordic quad
07-21-2009, 04:57 PM
Maybe a bad torque spring?

etondaddy
07-22-2009, 06:59 AM
Originally posted by nordic quad
Maybe a bad torque spring?
Yep next place to go is the clutchs..... is it good on the flat...??


Mike Kozura

jfwyatt
07-22-2009, 04:06 PM
still does pretty good on flat ground the hills are whats giving trouble. Also should i put stock back in or upgrade to a 1500 rpm red torque spring and maybe even the upgraded clutch springs?

etondaddy
07-22-2009, 04:30 PM
First get the clutchs all apart and check it out (front and rear). Is the motor stock..?? making clutch mods with out more HP will make it worse. If the motors stock just freshing it all up will make it run like it used to. Did you check the comp. with a gauge....what did you get.



Mike Kozura

jfwyatt
08-12-2009, 03:25 PM
fixed it the rollers in the variator had worn grooves and were hanging up. sanded the grooves smooth and the problem is fixed new variator should be here next week. thanks for the input.

etondaddy
08-12-2009, 09:52 PM
10-4........


Mike Kozura