Timing Belt Replacement :One of the most important maintenance items is an engine timing belt. Modern high powered, small displacement motors are of a high valve lift, high compression design (known as collision) that can lead to serious engine damage if any part of the timing belt system fails. When replacing the timing belt it is highly recommended that you replace the belt tensioner, roller and water pump. More often than not, it is not the timing belt that fails, but one of the bearing driven accessories that seize causing the belt to fail. AKINS AUTO REPAIR recommends servicing the timing system on a performance tuned vehicle on time.