What Are the Symptoms of Crank walk?

[DSM GREENHORN]

My car was running fine, and then all of a sudden it starts shuddering really bad when I take off from a start. It feels like I'm letting the clutch out too fast, but that's not it. It still does it when I ride the clutch. Right before this happened, I accidently turned my boost up to 16psi on my b16g on a stock motor w/ stock injectors, and stock fuel pump. I do have an S-AFC, but it's @ 0's on all the throttle settingd (high and low). When I had the boost up that high, it was making a sound that sounded like paper ripping when I really got on it. I only had the boost like this for about 5 mile, and then turned it back down to 10. I know it take a lot of boost to get crank walk, but could it have messed up my crankshaft just a little. It also vibrates a bit under heavy acceleration. Does anyone have any ideas on what this could be? Is it my clutch? I have a centerforce that's pretty new, but I know things can go wrong at any time. Please help me understand what I need to do to fix this. Oh yeah, one more thing, I just changed out some vaccuum lines right before I took off, would this have anything to do w/ it? Thank-you to anyone who finds it in their hearts to answer my probably stupid questions.

 

[ACKERSON]

probably not crank walk. Overboosting is not going to mess up your crank. If you replaced vacuum lines recently that would be the first place I would look. Other than that I think its pretty hard to diagnose with the info you provided.

 

[oldman]

Sounds more like a boost leak to me.