If you have a 1994 or early-1995 1.8 (NA), you have the short-nose crank, and the crank keyway is the one catastrophic-sounding failure worth checking. It is preventable.
The nose of the crankshaft drives the timing belt and accessory pulley through a small Woodruff key. On the short-nose crank (all 1.6s and 1.8s up to roughly mid-1995), the pulley bolt is the only thing clamping that stack together
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