833 OD vibration

dusterMike said

I was reading through AJ's suggestions. particularly (C). those are some things I haven't really tried. the vibration happens from 75 to 90 mph (2500 to 3000 rpm in OD). so I was thinking I would take it up to 90, then put in neutral. I figure if the vibration is still there it has to be after the trans, but if it goes away then it must in the trans.

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I really doubt that it inside the box, that OD gear is really really small. Using direct gear will bypass all the internal parts and any vibration remaining, will likely be after the trans...... if you have proven that it's not in the engine or the clutch, per the offered tests. So then in direct, you don't need to drive that fast.

Here's another tip; 30 mph is 44 feet per second. If you have a 26.7inch tire at 7 ft circumference, the tire would be rotating at ~6.3 revolutions per second. To get an idea of how fast this is, it is about as fast as you can count numbers from one to 12,repeating.