V8 5.6L 425 hp
The XTO Offshore® is the result of years of collaboration with top boat designers, and has been built from the ground up to provide the ultimate in power and efficiency offshore. With impressive stats such as the highest compression ratio on the water, industry firsts such as an electric steering system, and engineering touches such as iridium spark plugs and quad thermostats, it’s purpose-built for extreme power, durability, control and reliability.
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- 425 hp
XTO Offshore® V8 5.6L 425 HP
| Engine Type | V8 / DOHC / 32 valves / 4 Valves per Cylinder |
| Displacement | 5.6L |
| Bore x Stroke | 96 x 96 mm (3.78 x 3.78 in) |
| Prop Shaft Horsepower | 425hp at 5500 RPM |
| Full Throttle RPM Range | 5000 - 6000 RPM |
| Alternator Output at W.O.T. | 90 Amp Gross, Max |
| Compression Ratio | 12.2:1 |
| Fuel Induction System | Direct Injection / Up to 2900 PSI |
| Weight* | 432 kg (952 lbs) / 443 kg (977 lbs) / 453 kg (999 lbs) |
| Recommended Fuel | Octane 89 |
| Recommended Engine Oil | Yamalube® 4M (See owner's manual) |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel / Water Separating Filter (external) |
| C.A.R.B. Rating | 3-Star |
| Exhaust | Through Propeller (Except in Reverse Under 2500 RPM) |
| Intake | 32 |
| Ignition | TCI Microcomputer |
| Spark Plug | ILMAR7E-9 / Iridium |
| Alternator Output | 90 Amps Gross, Max |
| Starting System | Electric w/ PTT |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 7.8L / 8.2 Quarts | 7.5L / 7.9 Quarts |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | (25/14) 1.79 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 25" - 30" - 35" |
| Degree of Tilt | -4° through +73° |
| Degree of Trim | -4° through +16° |
| Dry Weight | 25" shaft / 432 kg (952 lbs) ; 30" shaft / 443 kg (977 lbs; 35" shaft / 453 kg (999 lbs) |
| Mounting Centers | 28.5" |
| Steering | Integrated, Electric Actuation |
| Steering Angle (maximum) | 31° from center, either direction |
| Warranty | Limited 5-Year Pleasure, 3-Year Government, 1-Year Commercial |
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