Yes, I feel the increased girth, over that of a screw driver, would yield a higher success rate, and be less prone to bending when the spanner is struck with a large hammer. Fordo!
Isn't there a flat on the exhaust cam that you can use a spanner/adjustable to stop the cam turning to undo the cam pulley bolt? Or was I just a monster and used vise-grips?
Very possibly. They look mint to me. Drop me a PM! GVK: I'll go look, but I too can hear the call of the Waterpump pliers! Fordo!
No Gary, I've just been to look, no 'flat' as such, although there's plenty to grab hold of with a large set of grips if you don't mind risking butchering it. But then again, I'd rather butcher the cam than the head...! Fordo![:^(]
