[Al Skierkiewicz]

This is one of the best examples of over revving I have seen in a great while. For starts note the burning on the top of the pistons and the inside of the head and valves. This engine was burning itself alive. The thread also mentioned that the trans was modified. Very typical chain of events is this. Trans loses it between shifts, likely 2 to 3, and goes no load on the engine. Before the driver can think to react and shut down, the engine goes past redline (especially with the boost) and things start to go bad pretty fast. One cylinder (the bent rod most likely) whacked a valve and bent the rod making it shorter. When it came down the piston pulled out of the cylinder and was forced back in at an angle, tearing up the cylinder wall and leaving debris in the pan. This debris then gets whacked by a piston on the way down or gets jammed between a crank weight and a bearing journal. If the piston was on a power stroke, it comes apart. It's all downhill from there, the engine is now unbalanced and a lot of debris is being flung inside the pan. By now the rod without piston is traveling back up the cylinder wall, finishing the damage to the remains of the piston. When it comes back down, it pulls out of the cylinder, goes sideways and punches a hole in the side of the block while the crank continues to turn. All of this is taking place in a couple of revolutions of the crank while it's turning 8000 or 9000 RPM. The driver is lucky if the engine doesn't catch fire at this point and the trans doesn't decide to fall back into gear on a locked engine. The car is already out of control with oil pouring onto the pavement and wetting the tires. If the trans had cut back in, the drive wheels would have locked and the car would have been an out of control rocket. This is the very reason drag racers moved to rear mounted engines, the debris and oil and flames would be behind them instead of in front.