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gptkbp:instance_of
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gptkb:engine
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gptkbp:application
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gptkb:aircraft
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gptkbp:bore
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5.5 inches
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gptkbp:compression_ratio
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6.5:1
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gptkbp:controls
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mechanical throttle
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gptkbp:cooling_system
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liquid-cooled
water-cooled
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gptkbp:displacement
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2500 cubic inches
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gptkbp:emissions_standard
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gptkb:starship
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gptkbp:engine
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gptkb:historical_event
gptkb:12
gptkb:Packard_V-12
high performance
high reliability
electric starter
nose-mounted
detailed specifications available.
V12 layout
used in WWII
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gptkbp:engine_type
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gptkb:Packard_4_M-2500-1
gptkb:Packard_4_M-2500-2
gptkb:Packard_4_M-2500-3
gptkb:Packard_4_M-2500-4
reciprocating engine
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gptkbp:first_introduced
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gptkb:1940
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gptkbp:fuel_type
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aviation gasoline
carbureted
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https://www.w3.org/2000/01/rdf-schema#label
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Packard 4 M-2500 engines
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gptkbp:ignition_system
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spark ignition
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gptkbp:maintenance
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moderate maintenance
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gptkbp:manufacturer
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gptkb:Packard_Motor_Car_Company
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gptkbp:powers
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1500 horsepower
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gptkbp:production_years
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1940-1945
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gptkbp:setting
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V configuration
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gptkbp:stroke
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6.5 inches
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gptkbp:successor
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gptkb:Packard_V-1650_engine
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gptkbp:torque
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2000 lb-ft
wet sump
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gptkbp:type
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gptkb:engine
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gptkbp:used_in
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gptkb:Packard_C-2_aircraft
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gptkbp:valve_configuration
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overhead valve
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gptkbp:weight
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1200 pounds
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gptkbp:bfsParent
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gptkb:ZRS-4_Macon
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gptkbp:bfsLayer
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7
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