The Revmaster R-2300 engine maintains Revmaster’s  systems and parts, including its RM-049 heads that feature  large fins and a hemispherical combustion chamber.  [Figure 11-21]  It maintains the earlier R-2200 engine’s top  horsepower (82) at 2950 rpm continuous.  [Figure 11-22] kept on file for each individual engine. Once the engine’s  proper performance is assured, it is removed and packaged  in a custom built crate for shipping. Each engine is shipped  with its engine service and operations manual. This manual  contains information pertaining to installation, break–in,  testing, tune-up, troubleshooting, repair, and inspection  procedures. The specifications for the Aeromax 100 engine  are outlined in  Figure 11-20 . Direct Drive VW Engines Revmaster R-2300 Engine  Figure 11-16.  Jabiru 2200cc specifications. 11-13 Displacement Bore Stroke Compression Ratio  Directional Rotation of Prop Shaft  Ramp Weight  Ignition Timing  Firing Order  Power Rating  Fuel Consumption at 75% power  Fuel Oil Oil Capacity  Spark Plugs  Engine Features Opposed (OHV) Magneto Ignition Generator 20 Amp Pressure Compensating Carburetor  Four-stroke  Four-cylinder horizontally opposed  One central camshaft  Push rods  Overhead valves (OHV)  Ram-air cooled  Wet sump lubrication  Direct propeller drive  Dual transistorized magneto ignition  Integrated AC generator 20 amp Electric starter  Mechanical fuel pump  Naturally aspirated - 1 pressure compensating carburetor  Six bearing crankshaft 2200 cc (134 cu.in.)  97.5 mm  74 mm  8:1 Clockwise - pilot’s view tractor applications  132 lb complete including exhaust, carburetor, starter motor,  alternator, and ignition system 25˚ BTDC 1–3–2–4 85 hp @ 3300 rpm 4 US gal/hr AVGAS 100LL or auto gas 91 octane minimum Aeroshell W100 or equivalent 2.3 quarts NGK D9EA - automotive  Specifications: Jabiru 2200cc 85 HP Aircraft Engine