O.S. Engine Max - 81 VR-M Marine Engine, Brand New in Box
The MAX 81 VR-M is high performance power units that have been designed for power boat racing. For increased performance and longer life, MAX 81 VRM incorporate a specially developed O.S. piston/cylinder construction, chrome-molybdenum steel read drum valve and heavy duty piston pun and connecting rod. This engine is equipped with the O.S. Type 9B carburettor which provides a correctly balanced mixture of fuel and air at all throttle settings. Fully computerized modern precision machinery and carefully selected top quality materials are employed in the manufacture of each engine to ensure consistent performance and long life.
flywheel shown are optional extra parts.
- Drum-valve induction is standard on the .81 VR-M ABC.
Designed for high-nitro fuels and all-out racing
- ABC Construction
- O.S. Type 9B carburettor which provides a correctly balanced mixture of fuel and air at all throttle settings
- One Assembled Engine
- One Instruction Manual
Displacement: 13.01cc (0.794 cu in)
Bore: 26.0mm (1.024")
Stroke: 24.5mm (0.965")
Power Output: 4.2 PS at 22,000 RPM
Weight: 914g (32.26oz)
Practical RPM Range: 2,500 - 25,000 RPM