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Superior XP-Engines

Technical Specifications

  Experimental
XP-320
Experimental
XP-360
Experimental
XP-400
Displacement 320 cubic inches 360 cubic inches 400 cubic inches 
Max Continuous Brake horsepower 160 hp standard
150 and 165 available
180 hp standard
170 hp and 185 hp available 
215 hp 
Compression Ratio 8.5:1 standard
7:1 and 9:1 available
8.5:1 standard
7.2:1 and 9:1 available
8.9:1 standard
Engine Mount Types Type 1 or 2 Dynafocal or Conical
Propeller Drive Direct, AS127 Type 2 Modified
Propeller Type Fixed Pitch or Constant Speed
Weight 285 - 290 lbs depending on model 288 - 297 lbs depending on model 310 pounds 
Engine Dimensions
(in inches)
O-320
24.6" H x 32.3" W x 32.8" D
O-360
24.6" H x 33.4" W x 32.8" D
IO-400
24.0" H x 34.3" W x 32.8" D  
IO-320
24.0" H x 32.3" W x 32.8" D
IO-360
24.0" H x 33.4" W x 32.8" D

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  • Over 2,000 FAA-approved PMA parts and components available
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superior air Vantage Engines

  • FAA certified
  • 180-horsepower
  • Runs on Avgas or automotive gasoline*
  • Millennium Cylinders®

superior air XP-Series Engines

  • 150- to 215-horsepower range
  • Runs on Avgas or automotive gasoline*
  • Aircraft, helicopter and aerobatic configurations
  • Millennium Cylinders®

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