The second belt is required it is a balance shaft. Used to balance the engine. Without it at high Rpms or even a very long drives the vibration motor puts out, can and will damage the motor. You can find the timing marks on the gears as well as the housing.
It is very hard to get all the timing marks to line up but it can be done. Remember do not turn the camshaft in reverse rotation it will damage the valves. So to answer you straight up get both belts. I'm surprised the person you got the big timing belt from didn't know that
Thursday, December 23rd, 2010 AT 6:22 AM