first off i just found this site after googlin for an awnser to my question
glad i signed up
my 08 wr250 smoker has like 80-110 hrs on it from last season with zero problems.the last ride of the year before i was going to be putting a top end in it i got a Very bad vibration in the motor.noticable more under deceleration.
now still has great compression and starts good
Any ideas?
iam going topull it apart next week but wouldnt mind a "look for this " type help
iam thinking crank bearing or somthing with the flywheel.But crank bearing after only 100hrs??
i mix my amsoil perfect but i beat the shit out of it when riding/racing
glad i signed up

my 08 wr250 smoker has like 80-110 hrs on it from last season with zero problems.the last ride of the year before i was going to be putting a top end in it i got a Very bad vibration in the motor.noticable more under deceleration.
now still has great compression and starts good
Any ideas?
iam going topull it apart next week but wouldnt mind a "look for this " type helpiam thinking crank bearing or somthing with the flywheel.But crank bearing after only 100hrs??
i mix my amsoil perfect but i beat the shit out of it when riding/racing

The good news is the motor looks brand new inside. 

