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Thread: 850 Sci

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    Administrator Ron Hill's Avatar
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    Default 850 Sci

    Mercury Racing Releases the 850 SCi Sterndrive
    --Features 1075 SCi DNA For Unmatched Power & Durability

    Miami Beach, Fla.. (Feb. 17, 2005) – Mercury Racing is proud to announce the introduction of the newest addition to its stable of high performance sterndrive engines….the 2006 HP850 SCi. The engine was released this morning at a Mercury Marine press conference, just prior to the opening of the Miami International Boat Show.
    Based off the revolutionary 1075 SCi, the 850 SCi completes a full line of high performance sterndrive engines to come from Mercury Racing – the world leader in advanced marine propulsion systems.
    Like the 1075 SCi, the 850 SCi features the Mercury exclusive propulsion control module (PCM) 03 microprocessor, which is the brain behind the brawn. The 850 SCi’s PCM 03 computer features knock control that enables the engine to run on 87-octane fuel at a reduced power output in situations where the recommended 91-octane is not available.
    New graphics and engine aesthetics, including a composite engine cover, composite supercharger air inlet resonators and new style anodized billet aluminum pulleys are the differentiating birth marks which set the 850 SCi apart from its big brother.
    The 850 SCi shares the same mild mannered personality as the monster 1075 SCi. A pair of Lysholm twin screw superchargers, combined with multiport fuel injection (two injectors per cylinder), provides sport boaters with turn-key starting, great overall running quality and incredibly smooth idle quality for a high horsepower engine package. The engine’s 800 rpm idle speed makes shifting into and out of gear smooth as silk, making docking a pleasant experience.
    The 850 SCi is the third engine, following the 1075 SCi and 600 SCi, to be accredited by Mercury Racing’s T.E.A.M. (Total Engine Application Management) initiative. The standardized T.E.A.M. process ensures proper installation of the engine with factory specified components, providing maximum performance along with unmatched quality and durability. The 850 SCi will only be sold to accredited OEM boat builders and dealers who agree to the terms of the T.E.A.M. initiative.
    Mercury Racing engineers designed the 850 SCi for ease of installation. Every component is strategically placed with an end package that is as compact as possible. The twin screw superchargers, which require less power than traditional roots blowers, sit on a corrosion resistant charge air cooler and induction system designed exclusively by Mercury Racing. The low-profile design helps to reduce overall engine height and center of gravity.
    Supercharger induction noise levels are controlled by twin composite air inlet resonators. New high performance air filters/flame arrestors, custom designed for Mercury Racing by ITG, enhance engine operating efficiency and increased durability resulting in lower maintenance. Supercharger boost is variable. A boost bypass control valve, electronically activated by the PCM 03 microprocessor, continuously adjusts the amount of boost needed to provide consistent horsepower. Under optimum ambient conditions, the boost bypass control valve will open to adjust for the lower boost required to obtain 850 horsepower.
    The PCM 03 controller closes the bypass control valve to provide the additional boost required to maintain a consistent 850 horsepower when operating in sub-optimal running conditions as well as limited higher altitude environments. The 850 SCi’s ability to provide a consistent horsepower in any condition or locale eliminates the hassle of re-propping the boat to match conditions. The PCM 03 computer also enables individual cylinder control. This ability to optimize fuel, spark timing and knock control independently for each cylinder enhances engine running quality, performance, fuel economy, and durability. The use of eight independent ignition coils, one per cylinder, helps eliminate spark plug fouling.
    The PCM 03 also drives the exclusive Engine GuardianTM System. Engine Guardian monitors engine functions to forewarn of possible problems that could lead to engine damage. This “smart” technology not only detects and alerts the boater of a problem; it processes the data and reduces power to a maximum, safe level that allows the boater to continue operation. Engine Guardian also has the ability to proactively help prevent engine overheating by sensing not only engine temperature, but also cooling water pressure as well. By sensing water pressure and temperature, the system can provide advanced warning to the PCM 03 control module, which then reduces engine power before temperature related engine damage takes place.
    Mercury Racing’s new SystemView Race Edition software is compatible with the 850 SCi’s PCM 03 microprocessor. SystemView Race Edition features custom interactive software designed for performance boaters. Engine and vessel operating parameters are sent from the PCM 03 microprocessor and displayed real-time on SmartCraft® SC5000 SystemView Hardware.
    SystemView Race Edition is capable of displaying vital information for up to four engines at one time! Over 20 screens are available to display more than 30 engine/boat functions. Each screen can be configured by the boat owner to create custom displays for virtually any combination of real-time performance data. Display fonts were purposely designed to be as large as possible for an accurate quick read of vital engine/boat functions in the fast-paced performance boat environment. Engine/vessel data displayed include engine rpm, boat speed, fuel tank levels, water depth, outboard/drive trim position, and trim tab position.
    The 850 SCi features a dry-sump lubrication system. Three scavenge pumps and one pressure pump keep oil off the crankshaft, reducing friction for enhanced power and performance. A remote oil tank separates air from the oil and gives it time to settle, providing the pressure pump with a constant supply of oil. The oil tank also reduces foaming, improving overall oil lubrication, even in the most adverse sea conditions.
    Custom sealing systems, developed by Mercury Racing, enhance engine durability. The use of corrosion resistant engine components and treatments enhance engine quality and protection against the corrosive saltwater environment.
    An all-new, thermostatically-controlled, high velocity cooling system uses a combination of a circulating pump and sea pump to keep the engine at an optimal operating temperature and peak performance. The system utilizes a three-stage sea pump. Two stages feed cooling water to the engine block and cylinder heads, while the third stage feeds the charger air cooler.
    Longer valve train life is the result of Mercury Racing dynamic optimization utilizing in-house valve train dynamics test rig.A high-output, 65-amp alternator provides increased power at idle and full power. The increased charging capacity makes running a variety of electronic accessories worry-free.
    Both the 850 SCi and 1075 SCi are built from the bare block to completion in Mercury Racing's four-cycle Race Shop. Technicians use specialized components throughout the engine, from the heavy-duty valve train to the custom fabricated steel oil pan. Engine packages come standard with the Mercury Racing dry-sump six drive.




    HP850 SCi - Key Features

    · Designed and developed by Mercury Racing Engineering.
    · New graphics and engine aesthetics, including a composite engine cover, composite supercharger air inlet resonators and new style anodized billet aluminum pulleys.
    · Handcrafted in Mercury Racing’s four-cycle Race Shop.
    · 557-cubic inch tall deck cast iron cylinder block featuring five main bearings with stud fastened steel main bearing caps.
    · Twin-screw Lysholm superchargers require less power than traditional single-screw roots blowers.
    · Superchargers feature engine supplied lubrication for enhanced durability.
    · Supercharger induction noise levels are controlled by twin composite air inlet resonators.
    · New high performance air filters/flame arrestors, custom designed for Mercury Racing by ITG, enhance engine operating efficiency and increased durability resulting in lower maintenance.
    · Eight ignition coils, one per cylinder, eliminates spark plug fouling.
    · The Mercury PCM 03 microprocessor continuously monitors the amount of boost needed to provide consistent 850 horsepower in any condition or environment and varies boost accordingly.
    · The Mercury PCM 03 microprocessor optimizes fuel, spark timing and knock control for each cylinder independently, enhancing engine running quality, performance and durability.
    · Knock control, managed electronically by the PCM 03 microprocessor, enables the engine to run on 87-octane fuel at a reduced power output in situations where the recommended 91-octane is not available.
    · An all-new, high velocity cooling system uses a combination of a circulating pump and sea pump to keep the engine at an optimal operating temperature and peak performance.
    · Innovative dry-sump engine lubrication reduces friction and adds horsepower for improved overall boat performance.
    · Balanced steel crankshaft.
    · Forged-steel, 100% machined connecting rods andcustom Mercury Racing aluminum pistons
    · High performance roller camshaft.
    · CNC ported, race-prepared aluminum cylinder heads.
    · Mercury Racing developed sealing systems, enhance engine durability.
    · High performance electric fuel pump.
    · 65-amp (917-watt) charging system.
    · Features the dry-sump Mercury Racing Six drive.
    · Six drive features innovative dry-sump lubrication system improves horsepower and overall boat performance.
    · Drive-line and plug-in models are available.




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    Released: 02/17/2005-RM

  2. #2
    Administrator Ron Hill's Avatar
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    Default Spec on the 850 SCI

    HP850 SCi - Specifications



    Crankshaft Rated Horsepower 850 (634 kW)
    Full Throttle RPM Range 5500-5800
    Displacement Liter/CID 9.1/557
    Bore (in/mm) 4.50/114
    Stroke (in/mm) 4.375/111
    Compression Ratio 8.00:1
    Cylinders V-8
    Alternator (amp/watt) 65/917
    Controller PCM 03 Distributorless
    Fuel System Sequential Fuel Injection
    Fuel Requirements 91 Posted Octane (R+M)/2
    (98 RON) International
    Transmission Huber 1450 Series
    Drive Unit Dry-Sump Six Drive
    Gear Ratio Application dependent. Contact Mercury Racing for additional information
    Length (in/mm) 55/1397
    Width (in/mm) 40/1016 (w/CMI Exhaust System)
    Height (in/mm) 30/762
    Weight (lbs/kg) 1720/782
    Warranty 180-Day Ltd. for Recreational Boating



    180 day warranty...What does this "SUCKER COST"???? If you have to ask, you can't afford it!!!! (That would be my guess)..


    # # #

    Released: 02/17/2005-RM

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