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
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