Camlifter seems to have damage along the edges


I'd say that the vast majority of lobe issues I've seen have been on the edges like yours.

Only one springs to mind that wasn't and it's from a Glanza 4EFTE that blew up on track about three years back.

On engine strip down I found heavily carbon build up in the ringlands which had gummed up the piston rings. Subsequent oil in the compression chambers coupled with a bit too much boost, lazy tune and hard driving led to detonation. Four pistons cracked as a result so the damage on the cam was the least of this engines problems. Amazingly it did drive home lol.

The gummed up ringlands is a common issue on the 4E, a topic for a different thread I reckon.