I want to remove the cam belt, such that the woodruff key on the crank shaft is in the 12 o clock position (long story, but I want to do some work on it).

My question is, in this position, will any of the camshafts suddenly rotate of their own accord due to pressure from the valve springs when I remove the cambelt?

 

the top left pulley will spin but if you've marked it with tipex or paint you can but it back to same position when refitting , won't cause damage and also if you look the pulleys have marks on them , the double marks go together on the top and bottom pulleys and the top pulley with one mark goes to 12 oclock, if that makes sense

 

as above you can take the belt off in any position but the pulleys, may spin, just makesure that you marked them up correctly fro refitment