Timing Belt Change Interval (time vs milage) - Pelican Lot's of different opinions on what the frequency of replacement should be. I've heard 30K, 45K, 50K. I just replaced the original belts, rollers, cam seals and water pump in my car at 60K back in Feb. Mine's an auto, so I don't know if "hard" driving via manual shifts can shorten the belt lifespan or not.'82 928: Necessary to preemptively replace timing belt944 Timing Belt Change IntervalUpdate: new Porsche guidelines for timing belt/water pumpSee more results When does the timing chain need to be replaced? | Testing When does the timing chain need to be replaced? We all know that a timing belt in a car engine needs to be replaced at recommended service intervals, but what about the timing chain? What is the difference between a timing belt and a chain?
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