An engine that has enough piston-to-valve clearance to prevent contact is MOST-Likely known as a(n):

Question

Quizplus · Accepted Answer

A freewheeling engine is designed such that even if the engine timing belt or chain fails, the pistons will not come in contact with the valves due to adequate clearance. This is a safety measure that prevents significant engine damage. The other options do not necessarily guarantee adequate piston-to-valve clearance.

An Engine That Has Enough Piston-To-Valve Clearance to Prevent Contact