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 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