Driveline Vibrations

Unfortunately sometimes the right shop is more expensive, but they get it done right the first time and not necessarily ignore what you say, but educate and work with you. That's why I like the machine shop I went with. Surely they don't know the VG SOHC like I do so I can answer a few questions here and there, but they sure as hell know what they are doing when it comes to what I'm paying for. This place actually calls me every time there is a minor/major issue and ask me how I want to proceed rather than making decisions for the customer and just working ahead.

For the unbalance to be un-detectable, it absolutely does. As speed increases (rpm), so does the parasitic force of the unbalance (lbf). Centrifugal force 101. Something balanced with a threshold of 5 ounce-inches, at 100rpm, will fail miserably at 6k rpm. This is the reason Adam only gets the vibration at higher speeds. The unbalance is still there at slower speeds, it's just not detectable.

Just why do you think manufacturers use rubber in their mounts? Tolerance.

Pun intended.

and...... run out was measured at 0.080". At least we know what the issue is. Piece of shit is being scrapped and a new one is being made.