Vibration. Clutch or engine?

[Rawze]

had someone here one time with a vibration no one could find .. was in the enigne, it would be real bad at about 1400 rpm or so even in neutral.

turns out that it had a slightly bent (not visible by eye) connecting rod because they re-used the old rods during its recent inframe after the engine had hydra-locked previously and no one bothered to check them properly.

the quality of what repair shops do to these engines is complete s$it these days.. so one never knows any more.