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2018 Mercury Racing Sterndrive 860

Racing Sterndrive 860

Introducing the all-new QC4v (quad cam four valve) 860 sterndrive. Designed, developed and manufactured in-house, the naturally aspirated, 9.0 liter engine features Mercury Racing's exclusive aluminum four-valve cylinder heads and dual overhead camshaft valve train. This proven valve train, which greatly enhances engine performance and durability over a standard two-valve design, enables the engine to produce 860 horsepower at 6800 rpm on 89 octane (Rec 90) pump fuel. The engine's 6300-6800 rpm operating range offers unsurpassed acceleration for its power rating. The higher rev limits expand the range of propeller options available for a variety of applications.

Information

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Specifications

Engine Specs
  • Cylinders : V-8
  • Displacement Liter/CID : 9.0/552
  • Bore & Stroke (in/mm) : 4.57/116 x 4.21/107
  • Compression Ratio : 9.75:1
  • Fuel System : Sequential Fuel Injection
  • Full Throttle RPM Range : 6300-6800
  • Gear Ratio : Application dependent (contact Mercury Racing for additional information)
  • Length (in/mm) : 31/791
  • Width (in/mm) : 38.3/973
  • Height (in/mm) : 26/664
  • Fuel Requirements : 89 Octane Pump Fuel
  • Drive Unit : M6, M8 Optional
  • Transmission : Mercury Racinq Hydraulic
  • Weight (lbs/kg) : 1420/644
  • Warranty : 2-Year Limited for Recreational Boating
  • Alternator amp / Watt : 95/1340
  • Controls : Distributorless
  • Power mhp / kW : 860 (641 kW)