IHey guys I'm in a rut here, had an exhaust valve burn on my 2007 Audi a4 Quattro, got the head machined by a machine shop but they could not find a any info on how the set the timing chain, can anyone help me out here? Any info on how cams need to be set, marked etc will help!

 

There is no timing chain. Only a timing belt.

 

Timing chain in the rear of the head runs both cams timing belt in front runs exhaust cam

 

there is a special tool to align and lock the cams to each other.