QUOTE]I'm sorry, but I don't buy it. Chain? No maintainence. Ever. Belt? Every 60-100K, depending on the vehicle. The chain on the small block Chevy in my Buick Roadmaster will still probably around long after I'm dead. The belt in my '02 Accord will get replaced in 3 or 4 years.
While I can't say that "chains never break", I *can* say that "chains *almost* never break" and are typically designed to last for the life of the engine or longer. Belts are designed-in wear items, plain and simple. [/QB][/QUOTE]
I disagree that a chain needs no maintenance, but agree that "chains *almost* never break". The problem with high mileage chains is that they stretch, and loosen between the links slightly creating backlash or slop. This could cause starting problems, hesitation and just general subtle driveability problems affecting power and economy. Ever replace a timing chain? A new chain can be held horizontal and it would not "sag or bow". Take an old chain and hold it the same way and it will "bow". Some dont think this is a problem, but I think it is. But everyone has their own opinions on whether this needs maintenance.
A "gear to gear" probably would approach the "no maintenance needed" requirement, in my book. But I dont know of a new engine having gears, due to the gear whine it creates.
While I can't say that "chains never break", I *can* say that "chains *almost* never break" and are typically designed to last for the life of the engine or longer. Belts are designed-in wear items, plain and simple. [/QB][/QUOTE]
I disagree that a chain needs no maintenance, but agree that "chains *almost* never break". The problem with high mileage chains is that they stretch, and loosen between the links slightly creating backlash or slop. This could cause starting problems, hesitation and just general subtle driveability problems affecting power and economy. Ever replace a timing chain? A new chain can be held horizontal and it would not "sag or bow". Take an old chain and hold it the same way and it will "bow". Some dont think this is a problem, but I think it is. But everyone has their own opinions on whether this needs maintenance.
A "gear to gear" probably would approach the "no maintenance needed" requirement, in my book. But I dont know of a new engine having gears, due to the gear whine it creates.