Volvo Penta V6-250-C Aquamatic SX Sterndrive Engine Package

Description

Skippers of older carbureted runabouts struggle with vapor lock, hard starting, and sluggish throttle response in hot weather. The Volvo Penta V6-250-C SX Package resolves these issues through direct spark injection on a 4.3L V6 producing 250BHP at 5,800 RPM. Direct injection demands 10-micron fuel filtration, and aluminum castings require closed freshwater cooling protection.

A die-cast aluminum block integrates cast-in iron liners to support continuous high-RPM running. The all-aluminum 12-Valve cylinder heads feature sintered valve seats and variable valve timing. Electrical systems operate on a 12V marine ground with a 1.4 kW starter and a 12V 75A alternator. Package envelope dimensions measure 36.0in long, 30.6in wide, and 31.1in high. Complete package dry weight equals 985 lbs with the SX sterndrive. Oil pan capacity holds 1.32 US gal.

Key Features of Volvo Penta V6-250-C

Runabout boaters buy Volvo Penta V6-250-C SX sterndrive packages to repower 19ft to 24ft sport boats with efficient direct injection. Marine shipyards choose this single-prop package for commercial workboat diesel engine repower hulls converting to light gasoline power.

• Direct fuel injection sprays atomized fuel straight into combustion chambers for clean burn
• Variable valve timing adjusts camshaft overlap across RPM bands to maximize hole-shot torque
• Aquamatic SX sterndrives use a single propeller layout for high hydrodynamic top-end speed
• Closed freshwater cooling loops protect internal aluminum water jackets from corrosive raw seawater
• Common fuel rails operate direct injectors to optimize fuel burn and reduce carbon emissions
• Die-cast aluminum engine castings reduce transom weight to improve bowrider planing hull trim
• Serpentine belt systems maintain positive drive grip on the 12V 75A alternator

Bench Dynamometer Load Test Output

Dynamometer test runs prove 250BHP peak output at 5,800 RPM and 195BHP continuous output at 5,000 RPM. Naturally aspirated intake manifold pressures hold at 1.00 bar barometric reference. Closed freshwater cooling circuits stabilize block temperatures at 160°F under continuous dyno loading. Engine oil pressure maintains 45 PSI across operational engine speeds. Sterndrive trim permits up to 30° static trailering angles. Crankshaft journal runout remains below 0.0005in TIR to protect bearings against deflection fatigue. Exhaust manifold temperatures stay below 1,150°F during full power runs.

Field Operation Maintenance Service Rules

Mechanical throttle and shift controls provide positive detent action with under 2 lbs of lever resistance. Do not install this gasoline sterndrive package in commercial displacement push-boats or vessels operating in shallow mud flats without raw-water strainers. Operators must run clean unleaded gasoline with minimum 87 AKI octane ratings and inspect outdrive drive bellows regularly to prevent water intrusion.

• Drain engine oil and change spin-on oil filter cartridges every 100 operating hours
• Inspect SX sterndrive gear oil, drive bellows, and sacrificial zinc anodes every 100 hours
• Replace the primary 10-micron fuel water separator filter cartridge every 100 engine hours

Factory Warranty Shipment Parts Manifest

Volvo Penta provides a 2-Year limited warranty backed by 3-Year major component structural coverage. The shipment crate contains the V6 marine gasoline engine core, Aquamatic SX sterndrive outdrive unit, transom shield kit, 12V 75A alternator, 1.4 kW starter, power trim pump, and factory technical manuals.