Originally Posted by CossieRich

Hows this for a story then.

Le Mans this year, the top bolt of my alternator worked loose and flew up into my cambelt. It bent the tensioner and the washer on the bolt got traped underneath my brand new vernier exhaust cam pulley against the thermostat housing. Resulted in a snapped belt, compeletly ruined exhaust cam pulley, a lump out of the inlet pulley and a bent tensioner. This was with the cambelt cover ON. If i hadnt been running the car with the cover on then the bolt would have just fallen harmlesley onto the floor, but because the bolt and washer had no where to go it got trapped in the cambelt and this is the result. i now have no compression on cylinder 2,3 and 4, am going to have to buy new vernier pulleys and see what valves have been bent. I will always run a cambelt cover even though it helped towards such nasty damage on my cossie.

Bling bling verniers or not you should always run one. If you want your pulleys on show then buy the spec r cambelt cover with the cut-outs at the top so the pulleys cam be seen.