first change for me. 158,813 miles, and just in time.
Timing belt was't in "bad" shape, but was beginning to show it's age with some tiny hairline surface cracks if you bent it in a 2" circle. I don't think they were as much from mileage as they were from age - almost 8 years.
Water pump was leaking just a tad through the weep hole - I don't know how long, but I never lost coolant level and it never "dripped".
Crank seal had a tiny weep.
I had:
Timing Belt
Water Pump
Crank Seal
Cam Seals
Tensioner
AC belt
Power Steering Belt
Alternator Belt
Toyota Red Coolant
all for $252 in OEM parts (most of it thanks to Phil - Toyota of Dallas) and $200 in labor via a local independent shop and a toyota certified master technician.
not bad at all.
i would NOT suggest going this long on a timing belt. i would suggest no longer than 6-7 years or 120k and at most 140k. i was overdue and it showed after it was torn down.
now the cool part - apparently, the original belt had stretched or something. i had a slight valve chatter at certain times on a long grade (even after seafoam, and that's with 33's and 4.56's). now, not only is the idle just buttery smooth, but the acceleration is better and the almost silent valve chatter that was there is now gone. there really is a difference in the "feel" of the engine - which also means that i waited too long to do it.