[mechhound]

If it's an interfierence engine, which most engines are, you will likely do extensive damage.

An interfiernce engine is one in which the valves when open, the piston will hit the valve. So the cylinders that have the valves open, will get piston to valve damage if the timing belt breaks. You don't want to have a broken timing belt for that reason. I hope others that are familiar with this engine will comment.