How many hours does it take to replace a timing chain?
Overall, replacing the timing chain and its associated hardware should take a qualified mechanic 5 to 8 hours to complete. How long does it take to fit a new timing chain? In general, if the timing chain is replaced by a mechanic having all their replacement supplies and parts easily accessible, the job itself should not take more than 5 to 8 hours total. Again, it depends on the location of the job and accessibility of tools and supplies.