There was a TSB for these years concerning the Crank bolt. The TSB was for a re-torque not a replacement. I've replaced mine (95SR) during a timming belt change just for piece of mind as it was relativly cheap (at that time). In my opinion most failures are caused from improper torquing of the crankshaft bolt after a timing belt intallation. If the mech is too lazy, or does not have the right tool to appply the correct torque value to the bolt...well you know the rest of the story. <img src="/forums/images/graemlins/scared.gif" alt="" /> Moral of the story: There's no room for error in the design of the crank, pully , bolt assembly, so make sure you or your mech is doing it correctly.