Until fairly recently, 60,000 was the standard for Tbelts. As far as I can find out, there hasn't been a serious advance in the materials that prompted the upgrade to 105k.
My suspicion is that the change represent a triumph of the marketing department over the engineering department. The engineers probably felt that they needed a 99.5% probability of the belt making it to the change interval OK, thus 60,000. Marketing probably said "C'mon, Nissan and those other timing chain guys are hammering us for the belt replacement cost. We're losing sales. Your own testing says 97% of them will make it to 105k. Thats's good enough."
I guess Honda's Canadian brass still value engineers more than marketing pukes. Or at least they did in 2001.
Yes, I am a cynical and bitter engineer. (Though not the automotive type)
I'm doing my first one at 80k. If it's not a rust heap by 180k, I'll do it again then.
My suspicion is that the change represent a triumph of the marketing department over the engineering department. The engineers probably felt that they needed a 99.5% probability of the belt making it to the change interval OK, thus 60,000. Marketing probably said "C'mon, Nissan and those other timing chain guys are hammering us for the belt replacement cost. We're losing sales. Your own testing says 97% of them will make it to 105k. Thats's good enough."
I guess Honda's Canadian brass still value engineers more than marketing pukes. Or at least they did in 2001.
Yes, I am a cynical and bitter engineer. (Though not the automotive type)
I'm doing my first one at 80k. If it's not a rust heap by 180k, I'll do it again then.