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← TechnologyWhich outcome occurs in high-performance engines operating near peak RPM when crankshaft torsional vibrations amplify?
A)Harmonic balancer failure✓
B)Increased fuel consumption
C)Reduced exhaust emissions
D)Premature valve spring fatigue
💡 Explanation
Harmonic balancer failure occurs because amplified torsional vibrations induce excessive stress on the crankshaft and its attachments, specifically by resonance. This mechanical resonance strains the mountings; therefore, balancer failure results, rather than improved fuel efficiency or reduced emissions.
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