03-23-2006, 01:31 PM
Join Date: Oct 2004
Location: Nashville, TN
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TIming chain is for life item. It can break at anytime but normally you will be able to get 150k miles out of it. I have seen 22r series engines cahins break with 60k miles on them and I have seen them go well over 200k miles with the original chain. on those engines though it was not so much the chain that you had to worry about as it was the guides. when the guides break the chain starts slapping on the tiing cover and make a lot of noise. WHen that happens you need to get it replaced beofre it breaks because most of the tim if a chain breaks you are going to have catastrophic engine damage.
I would assume the case will be the same for the 3.5 that Toyota is using in everything now. Make sure you keep your oil changed and this will help prolong the life of the chain.
One more thing My mother had a 1979 Chevy Impala with a 350 in it when I was kid. She sold and it and the next owner had to replace the timing chain at about 300k miles when it broke. thenhe drove for another 100k miles before getting rid of it.
Nowadays there arent many people that even drive their car to 100k miles so you should be just fine.
PLEASE DO NOT GET RID OF THE OLD TN AS WE KNOW IT.
Last edited by Cyorke; 03-23-2006 at 01:33 PM.