my civic has around 225,000 miles on a d16z6 motor. How likely is it that the timing chain will break? Is it a good idea if I replace it? Or just wait till the motor quits working and then rebuild or swap?

 

As a precaution, most ppl change their timing belts every 90k miles

 

I would recommend changing the timing belt. No sense in ruining the engine over a belt. Besides, if the belt breaks and engine is ruined, do you have another car to drive while you are waiting on your swap to arrive and getting it installed?

 

wow, talk about A person with a care in the world...which I was like that
but ya change the belt, if the motor runs nice, the change in belt should ensure it goes into over-time

 

alright then, I guess it is a good idea to change it. The Civic is a very reliable car. I was just driving one day and thought: that would suck if the timing chain broke. Since I am the third or fourth owner of the car, it is in my best interest to change the chain. Thanks for the advice everyone.

 

by the way its not actual chain but a rubber belt.