CAA NZ AME Piston Engines Practice Questions - CAA NZ AME Licence Exam - Piston Engines (Subject 5, New Zealand) Exam

Why are studs preferred over cap screws for securing cylinder bases to an aluminium engine crankcase?

Studs reduce the overall weight of the crankcase assembly Studs eliminate frequent thread wear in the soft aluminium crankcase during cylinder removal Studs allow cylinders to expand laterally without stress Studs provide a metallic ground for spark plug high-tension leads

Correct Answer:

Studs eliminate frequent thread wear in the soft aluminium crankcase during cylinder removal

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