MerCruiser >> Inboards >> 8.1 S High Output |
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 MerCruiser MPI engines with SmartCraft™ feature the most sophisticated boat/engine data-management system available. This system monitors up to 64 internal and external functions and continuously adjusts the engine operations for optimum performance.
Mercury-exclusive ECM 555 processor optimizes fuel mixture, knock control and ignition timing independently for each cylinder, resulting in improved, precise performance. ECM 555 also enables the connection of SmartCraft components.
Engine Guardian™ proactively monitors and protects your engine from the damaging effects of low oil pressure, high engine temperature, engine over-speed, or low cooling water pressure.
The Engine Guardian system not only detects and alerts you of an engine problem, it automatically reduces power to a safe level that allows you to continue operating.
The SmartCraft Digital Throttle & Shift (DTS) system brings digital precision to engine throttle and shift (optional). |
DTS provides unprecedented smooth shifting (compared to mechanical systems); precise throttle control; and superior, reliable performance. SmartCraft DTS offered as a boatbuilder option on the 8.1 models (single- and twin-engine applications).
Dry-joint technology reduces the potential for water leakage in exhaust components and improves corrosion resistance in the exhaust system.
MerCruiser ignition strategy optimizes exhaust temperatures. These optimized temperatures reduce water vapour condensation, thereby minimising the potential for water ingestion and related exhaust corrosion.
MerCruiser water-cooled and insulated fuel system, which eliminates the need for a return line to the fuel tank, helps keep fuel temperatures down and greatly reduces the potential for vapour lock with today's fuels. |
Maximised exhaust riser height within the available package envelope (additional two inches over previous big blocks) and increased down-angle improve resistance to water ingestion.
MerCruiser-exclusive water drain system - an air-actuated, single-point interface to two drain points - provides a fast, convenient means of draining water from the engine.
The innovative water drain system effectively enables boaters to extend their boating season into the cold months.
Developed to increase durability particularly in saltwater environments, the 8.1S engine models feature closed-cooling with long-life coolant. |
SmartCraft : Yes
Horsepower: 420 hp (313kw)
Displacement Liter/CDI: 8.1L / 496
Cylinders: V-8
Bore & Stroke: 4.25in. x 4.38 in. (108mm x 111mm)
Compression Ratio: 9.1:1
Fuel System: MPI
Full-Throttle RPM Range: 4400-4800
Ignition Type: PCM 555 Distributorless
Alternator Amp: 65 (917) watt
Total Weight (Ib/kg): 1130/513
Length (in/mm): 47/1194 |
Width (in/mm): 33/838
Height (in/mm): 24/610
Velvet Drive 71C (1) N/A
Velvet Drive 72C (2) 1.0:1 (5)
Velvet Drive 5000A (3) 1.5, 2.0, 2.5, 2.8:1
Velvet drive 5000V (4) 1.5, 2.0, 2.5:1
ZF Drive 63 A (3) 1.5, 2.0, 2.5, 2.7:1
ZF Drive 63 IV (4) 1.5, 2.0, 2.5:1
Audio Warning System: Standard
Closed-Cooling: Standard
Engine Flush Port: N/A
Exhaust Elbows: Painted Stainless Steel |
Exhaust Manifolds: Ceramic, EDP &
Painted Aluminum
High-Mounted Starter: Standard
Knock Control: Standard
Optional Riser: 2" & 6"
Platinum-Tipped Spark Plugs: Standard
Remote Oil Filter: Standard
Serpentine Belt: Standard
Water-Cooled Fuel System: Standard
Water Drain System: (5) Standard
Water/Fuel separator: Standard
CARB Star Rating: 3 |
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| Contact Details : |
51 – 59 Snook St (service rd) , Elizabeth Avenue , Clontarf QLD 4019
Tel: (07) 3284-2342 | Fax: (07) 3284-9155 | Email: info@cunninghamsmarine.com.au
Mon - Fri: 8:00am - 5:15pm | Sat: 8:00am - 4:00pm |
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