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← TechnologyWhich risk increases in an internal combustion engine when an oversized piston is installed without reboring the cylinder?
A)Increased oil consumption from ring wear✓
B)Detonation caused by high compression
C)Increased valve float at high RPM
D)Crankshaft failure from excessive loading
💡 Explanation
When an oversized piston is installed without reboring, insufficient clearance causes excessive friction leading to accelerated piston ring wear because of increased contact pressure against the cylinder wall. Therefore increased oil consumption develops as oil bypasses worn rings, rather than other failures involving unrelated valve, compression, or loading issues.
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