I know that the 4.0 L - SOHC - V6 engine has 3 timing CHAINS
the miles are 81000 of Honda odeysse 2004, When should change of timing belt?
Change it every 60,000 miles.
when the noise come.
Before it breaks
65000 miles
Never, the 2004 Civic SI has a timing chain as do all K Series engines.
The manual states that the timing belt on a 2004 Accord V6 should be replaced at 105,000 miles.
The first timing belt change is at 60,000 miles.
Timing is computer controlled.
You don't as the 2004 Honda CRV uses a timing chain and not a belt. It should last the life of the engine.
The 4.0 liter SOHC - V6 engine has ( 3 ) timing CHAINS
warped rotors change them and it should be fine