What is the schedule on these?

I know that, historically, on many OHC engines you are supposed to replace them every 60K miles, though on an 88 nova I never did, and it was at 107K when I sold it.

I didn't see an item called timing belts in the maintenance schedule, unless it is covered by drive belt, which is changed every 30K miles.

Thanks,
Kevin

 

The VQ35 has a timing chain. It should never need to be replaced. The timing chain tensioner may crap out on you at 100-120K, but it's a pretty easy and cheap fix because there is an access port on the timing chain cover.

 

Thanks. That is what I wanted to hear.

 

Chains do stretch over time and eventually will need to be replaced as well. Think of it like a Bicycle chain. They stretch and start to flap after sometime. Same thing. Just not as soon as belts of course.