An interference engine has enough clearance between the piston and valves so that it will not bend the valves if the timing belt breaks, slips, or skips.

Question

Quizplus · Accepted Answer

An interference engine does not have enough clearance between the piston and valves, so if the timing belt breaks, slips, or skips, it can cause the valves to bend due to collision with the pistons.

An Interference Engine Has Enough Clearance Between the Piston and Valves