I didnt replace mine. It broke. I replaced it along with all me valves, 14 vavle guides and a wad of cash... The auto tensioner should be replaced, they is crapper than crap.
Also the plate which it bolts to is cast ally and it then proceeded to break (maybe stressed when the old belt snapped???)..
suffice to say me car needs another head rebuild, cam belt, some pulleys.. a new water pump and stuff..
then its gone... anyone wanna buy a 16v Calibra on a K plate with a spunkin new head and stuff....
i'd recommend replacing the following on a cambelt change:
2. Guider rollers.
3. Water Pump.
4. Auto Tensioner.
5. Auto Tensioner Mounting plate.
this could be one of my last posts.. i've lost faith in vauxy's after this.. .......