FOR SALE 1991 Volvo Penta 431 4.3 L V6 205 HP Marine Engine NO SALT 459 HRS. Very excellent condition with low HOURS and great runs.

The 1991 Volvo Penta 431 is a marinized version of the General Motors (GM) 4.3L 90 V6 engine. Rated at 205 horsepower, this carbureted powerhouse was highly popular for sport runabouts, cruisers, and fishing boats.

Core Specifications

• Engine Type : 4-stroke, 90-degree V6, gasoline-fueled
• Displacement : 4.3 L (262 cubic inches)
• Horsepower : 205 HP
• Cylinders : 6
• Cooling System : Raw water (seawater) cooled via crankshaft-mounted pump; freshwater cooling kits were available as dealer add-ons
• Ignition System : Breakerless ignition system

Maintenance & Capacities

• Oil Capacity : 4.5 Quarts (with filter)
• Recommended Oil : Typically SAE 30 or 20W-50 marine-grade oil (dependent on operating temperatures)
• Idle Speed : ~600 – 750 RPM (in gear)
• Operating Range (WOT) : 4200 – 4600 RPM
• Total Timing : 8° BTDC (Base/Initial)

Fuel & Electrical

• Fuel Delivery : Carbureted
• Fuel Type : 87 Octane minimum (marine gasoline)
• Alternator : 75 Amp