Excellent write up. I also have the N62 engine in my 650i. Last year I did the stem seals using the AGA tool, upper timing cover seals, alternator bracket seals etc and when putting the upper timing cover back on a stripped a thread, so I did a temporary repair to get me going but anyway lately I've been struck with electrical gremlins, fixed them now but my tep fix on the upper cover seal started to leak quite badly so I decided to remove the left hand rocker cover and upper timing cover to change the seals and came across this...…



I too have eccentric shaft teeth issues!! so I googled the issue and came across your post.

I have a few questions if you don't mind me asking?.....first off where did you get the blue special tool that holds the cam assembly? I can get the N62 cam timing kit off eBay, that's ok but that blue piece I'm struggling to find.

Next question, TIS states to remove the exhaust "adjustment Unit" (cam timing gear), does this need to be removed? or can I keep it attached as I'm only doing the inlet side of things?

Thanks for any tips and help you give

Sorry, I don't know why the picture is blurry?