So I've been curious lately about timing belts. I know isuzu recommends changing them every 120k but out of curiosity,is this necessary? Everywhere I turn people are saying timing belts are extremely small. On my quest to research the matter I found a post on a forum where a guy was asking how strong timing belts were because he bought an engine and the owner pulled the engine using a timing belt. That's just wack! But serious, could you get away with changing the pusher to make sure the timing belt is on there tightly and that it doesnt skip a tooth or something like that? How many people on here have had a timing belt break on them? and how many miles were on it?