Is the v6 in these cars interference or non-interference? I see it has a timing belt, rather than a timing chain sadly.

 

It is an interference motor.

They rely on a careful compromise of compression ratios and timing with the valves to get the power/economy that they want.

The most modern J Motors can have multiple ways of altering the valve timing, and it's not necessarily related to the old VTEC one high and one low lobe. So if you allow a timing belt to break, you could end up with a catastrophe, or just a couple of bent valves. But these are definitely interference motors.

Basically, you need to maintain the timing belt the way that you should in order to avoid catastrophe.

 

All Honda V6's are interference designs.

 

+1

Honda has been using the same basic design for their V6's (with exception to the NSX) since 1998. Lots of improvements obviously, but the root of the design is relatively unchanged. All interference.

But OP, I wouldn't let that dissuade you from an Acura or Honda with a V6 though. It's an excellent engine and the timing belt is extremely unlikely to break unless you push it way past it's lifespan without changing it.