How do you know when a timing chain is about to go? Any kind of warning noises?

Or at what milage should you change it? I have always heard to change it at 80K miles.

 

I don't believe there are any signs, chains don't normally break like timing belts do. You'll just get some slack which will decrease performance over time.

I thought I remembered Vader saying a while back that the chains are good for 150k miles , not positive though. If you're putting in a cam, it's a perfect time to change it, otherwise, I wouldn't worry about it.

 

80,000 isn't bad at all. Chains last a pretty good while unless the motor has had abuse, then maybe a little less. No real warning signs that I know of. What makes you worry about it??

 

Just some wierd noises coming from the motor.....and I'm getting an awful bogging when I take hard turn under heavy acceleration. I'm pretty sure that has nothing to do with the timing chain, but with the fuel system, but I really have no idea.

 

You can test your timing chain for excessive slack if you turn the crankshaft and see if your rotor turns right away. The longer it takes for the rotor to move, the more stretched your chain is- simple as that.