I'm looking to buy a used 300ZX. Is there a way to tell if the timing belt has been replaced? Is there anything else I should look for or be careful of before buying? Thanks.

im not sure if the timing belt is exposed on that engine, or if it has a "viewing cutout"...if it is visible, just see how it looks..with a bright White light, look along the insides of the belt, and the outside, for very minor cracking.

Thanks. Any idea when timing belt replacement is recommended?

hmmm..im not sure on that one, but i woudl guess every 75,000 miles or so?

look 4 a silver sticker under hood that says if it has been changed. change every 60k miles.make sure the wiring harness 4 the coils and injectors are not all broken up from being removed. also on the belt isue look 4 missing bolts around belt cover or look to see if the crank balancer has chips missing on the back of it.