2017 Mercury 860

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Availability
Brochure
Year
2017
Manufacturer
Mercury
Model
860

Overview

Description

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.

Features
  • Unsurpassed Durability: Naturally aspirated, 9.0 Liter engine features Mercury Racing’s exclusive aluminum four valve cylinder heads and dual overhead camshaft valve train for unsurpassed durability
  • Enhanced Cooling: An all-new heat exchanger maintains engine temperatures for enhanced durability
  • Unmatched Acceleration: The 860’s 6300-6800 rpm operating range offers unsurpassed acceleration for its power rating. Higher rev limits expand the range of propeller options available for a variety of applications
  • Efficient: The 32 valve quad cam valve train offers extreme durability at high horsepower and engine speeds so you can be confident in knowing that the engine can handle anything you can
  • Mercury Racing Transmission: All-new Mercury Racing transmission. Compact, hydraulic design delivers smooth and consistent shifts thanks to DTS technology
  • Noise Reduction: Rear facing ram horn intakes direct induction noise rearward to reduce cockpit noise and enhance engine power. The 860 can also be configured with the exhaust outlets routed below water for reduced off-plane noise.
Specifications
  • Rated Power at Transmission: 860 (641 kW)
  • Full Throttle RPM Range: 6300-6800
  • Displacement Liter/CID: 9.0/552
  • Bore (in/mm): 4.57/116
  • Stroke (in/mm): 4.21/107
  • Compression Ratio: 9.75:1
  • Cylinder Arrangement: V-8
  • Alternator (amp/watt): 95/1340
  • Controller: Distributorless
  • Fuel System: Sequential Fuel Injection
  • Fuel Requirements: 89 Octane Pump Fuel
  • Transmission: Mercury Racinq Hydraulic
  • Drive Unit: M6, M8 Optional
  • 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
  • Weight (lbs/kg): 1420/644
  • Warranty: 2-Year Limited for Recreational Boating

Specs

Engine

Engine Type
V-8
Horsepower
860 hp (641 kW)
Bore x Stroke
4.57 in. (116 mm) x 4.21 in. (107 mm)
Displacement
9.0 L (552 cid)
Compression Ratio
9.75:1

Dimensions

Length
31 in. (791 mm)
Width
38.3 in. (973 mm)
Height
26 in. (664 mm)
Weight
1420 lb. (644 kg)

General

Full Throttle Operating Range
6300-6800 rpm
Fuel Induction
Sequential Fuel Injection
Alternator
95 amp/1340 watt
Warranty
2-Year Limited for Recreational Boating

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