Nope, the two are not related. You have to do a real lot of disassembly to get down to the timing belt.
One of my reference sources lists this engine as an "interference" engine, meaning a broken belt will cause bent valves. They recommend the belt replacement intervals to avoid that damage. It is also customary to replace the water pump and all the tensioning devices at the same time. Your mechanic will strongly recommend that if he has your best interest at heart. Some mechanics prefer to not replace everything in an attempt to save you a few bucks. I hope that isn't what happened here.
Tuesday, February 28th, 2017 AT 6:15 PM