What is non interference engine?

Answer 1

A 'non-interference engine' is designed so that if the timing belt or chain breaks while running, the valves will not strike the piston tops. The engine will only stop running without damage. 'Interference' engines will suffer major mechanical damage if the chain or belt fails during operation, thus the need to replace the belt or chain when recommended. A 'non-interference engine' is designed so that if the timing belt or chain breaks while running, the valves will not strike the piston tops. The engine will only stop running without damage. 'Interference' engines will suffer major mechanical damage if the chain or belt fails during operation, thus the need to replace the belt or chain when recommended.