Volvo Penta D6-400 Aquamatic Sterndrive Marine Diesel Engine

Description

Need instant 400BHP hole-shot acceleration without excessive stern weight dragging down your performance hull? The Volvo Penta D6-400 Sterndrive Engine pairs supercharging with turbocharging across a 5.5L 6-Cylinder layout producing 400BHP at 3,500 RPM. Common-rail injection requires 2-micron fuel filtration, while the DPH outdrive demands scheduled gear oil maintenance to protect hydraulic clutch components.

A parent bore ductile cast iron block integrates a heavy stiffening ladder frame to eliminate structural twist. The single-piece 24-Valve cast iron cylinder head operates direct cam followers over dual camshafts. Electrical components include a 12V marine ground, a 3.0 kW starter, and a 12V 115A alternator. Package envelope measures 45.3in long, 32.4in wide, and 30.7in high. Complete package dry weight with the DPH outdrive equals 1,731 lbs. Lube oil sump capacity holds 5.28 US gal.

Key Features of Volvo Penta D6-400

Offshore performance enthusiasts buy Volvo Penta D6-400 sterndrive marine engines to push sport powerboats and day cruisers to maximum velocities. Marine yards specify this outdrive package for commercial workboat diesel engine repower installations in high-speed rescue craft.

• Roots superchargers force dense charge air into cylinders at low RPM to eliminate turbo lag
• Turbochargers take over at cruise RPM to maintain sustained continuous horsepower up to 3,500 RPM
• Common-rail fuel injection operates at 1,600 bar to optimize combustion pressure and emissions
• Aquamatic DPH sterndrives feature hydraulic shifting for smooth gear engagement into forward and reverse
• DuoProp counter-rotating propellers grip water to eliminate steering pull and maximize acceleration
• Cast iron ladder subframes hold crankshaft bearings secure during peak supercharger torque spikes
• Multi-rib poly-V belt drives provide reliable power transmission to the 12V 115A alternator

Dynamometer Limits Thermal Bench Output

Dynamometer test records confirm 400BHP peak output at 3,500 RPM and 300BHP continuous output at 3,100 RPM. Supercharger and turbo compounding produces 2.00 bar peak intake boost pressure. Freshwater heat exchangers hold core coolant temperatures at 185°F under sustained maximum power dyno pulls. Engine oil pressure maintains 55 PSI across full operational revolutions. Sterndrive trim permits up to 30° static trailering angles. Crankshaft journal runout remains below 0.0005in TIR to protect bearings against deflection fatigue. Exhaust gas temperatures stay below 1,280°F.

Field Operation Maintenance Service Rules

Electronic EVC helm levers provide resistance-free throttle adjustments with under 2 lbs of hand resistance. Do not install this 5.5L supercharged sterndrive package in slow-speed displacement push-boats or vessels operating in shallow mud shallows that clog raw-water intakes. Operators must use clean ultra-low sulfur fuel and maintain sterndrive drive bellows regularly.

• Drain engine oil and change spin-on oil filter cartridges every 200 service hours
• Inspect DPH sterndrive gear oil, drive bellows, and sacrificial zinc anodes every 100 hours
• Replace the primary 2-micron fuel water separator filter cartridge every 250 engine hours

Factory Warranty Shipment Package Contents

Volvo Penta protects this engine with a 2-Year limited warranty and 3-Year major component structural coverage. The shipment crate contains the diesel engine assembly, Aquamatic DPH sterndrive outdrive unit, transom shield kit, 12V 115A alternator, 3.0 kW starter, EVC helm harness, and factory technical manuals.