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400R

The Merucy Racing V10 400R offers more low-end torque, more peak horsepower and a higher rpm range than any outboard in it's category. THis is the perfefct prescription for performance center-console boates and catamarans capable of speeds well beyond 75 mpg - the potent performance and drivability only Mercury Racing can offer.

Deep-Breathing QC4

The Mercury Racing Quad Cam Four Valve (QC4) desing features double overnhead camshafts and four-valve aluminum cylinder heads. A proprietary 92mm throttle body  and tuned intake work with the QC4 head to maximize airflow and power.

The exclusive heavy-duty throttle body serve motor is designed to prodcut instant throttle response, while a Mercury Racing fuel pressure sensor provides precise fueling under acceleration to further enhance performance. A 6000-6600 WOT rpm range for propping any performance hull type. All of this thrilling power and performance is produced on radily available 87 octane (91 RON) fuel. 

Racing AMS

The exclusive Mercury Racing Advanced MidSection (AMS) supports the V10 400R with tight-tolerance heavy-duty guide plates and stiffened engine mounts tuned to stablize the engine for enhacned high-speed handling. An optional rear tie-bar bracket integral to the Racing AMS provies a strong, ultra-light moutning point fo rrock-solid precision steering on catamaran and other ultra-high-speed applications. The Racing AMS isolates the powerhead form teh transom to ensure run quality is smooth and quiet at all speeds.

Gearcase Options

Two gearcase options are offered for the Mercury Racing V10 400R. The race-proven Sport Master gearcase is a surface-piercing design intended for boats capable of exceeding 85 mph and features low water pickups and a crescent leading edge to maximize speed and efficiency. The Mercury Racing 5.44 HD gearcase option is ideal for heavy bay boats and multi-engine performance center-console boats that require a more submerged gearcase and benefit from added stern lift. Both gearcase options feature a 1.60:1 gear ratio.

Specifications

Product details

5.7 V10 400R

Horsepower (HP/KW)

400/298

WOT RPM

6000-6600

Engine type

V10 (64 Degree) with 40-Valve Dual Overhead Cam (DOHC)

Displacement (LITER/CID)

5.7/349

Induction system

Naturally Aspirated

Fuel requirements

Unleaded 87 Octane Minimum (R+M/2) or 91 RON

Charging (AMP/WATT)

150/1890

Throttle & shift

Digital Throttle & Shift (DTS)

Midsection

Racing Advanced MidSection

Integrated rear tie bar bracket

Available

Shaft lengths (INCH)

20 / 25 / 30 / 35

Gearcase

Sport Master or 5.44" HD

Gearcase ratio

1.60:1

Dry weight (LB/KG)

695/315