took a vacation? I had mine break when I was cruising at 60mph or so, so the RPM's were low. I did not try to start the car after that, not even once. After this, I redid the timing belt and drove the Z for another 2 years. After driving for this long, I soon had lower compression in 2 cylinders (which was a H.G. issue). Removed motor and valves didn't appear to be bent. I might be a miracle case here, but this was my experience.