I was getting set to replace the valve stem seals in my 1.5litre, 16 valve head. I was reading the Haynes book on the subject. The book has a section on this job, but in the beginning of the section, it says that the instructions don't apply to 16 valve heads.Does anybody know a reason for this? Is it not possible to change the valve stem seals on a 16 valve head just like any other, ie 12 valve head? Thanks for any help on this matter.