Quote:
Originally Posted by @Art_Mighty
My belife is that the tolerances inside the cam gears are actually a little TOO tight for some of them function properly. It goes to this concept of tolerances "stacking up" inside the cam gear (this was mentioned in Toyota's official communication). Inside these things there are basically a bunch of parts. If each one of them is a little on the large side then all of them together won't move too well...
...in a way I really appreciate that this could even be a problem because it means that the engineers who worked on the cam gears are designing the tolerances for ware. As our motors get older these delicate and expensive assemblies will continue to function as intended. 
So to your question; the harder the break-in the looser the tolerances become? |
Okay. Let's say these lovely, tight tolerances are a good thing. Engines are breaking. Maybe it's too much of a good thing.
How do you figure that "delicate and expensive" is going to improve durability? I'm not following your logic here.