Storm88000 said:...unless it breaks.
we just got done rebuilding a ka24e engine, the tensioner broke and the customer kept driving it until the chain rubbed a grove in it about 1/2 inch deep.Harris said:Which is a RARITY, I might add.
The only way you could really snap a chain is by neglecting the motor, over-revving it all of the time, or simply due to the passage of a hell of a lot of time. I've seen motors die more because of something other than the timing chain snapping. That's the advantage of timing chains; they are supposed to last the life of the motor. Timing belts, however, need to be replaced every 60,000 miles or so.