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Caterpillar
C7.1 High Performance Propulsion Engine
The C7.1 marine propulsion engine is ideal for recreational boating applications, specifically smaller vessels and motoryachts ranging from 25 -60 feet in size. The engine features a common rail fuel system enabling optimum combustion and low emissions. The engines provide noticeably quiet operation due to reduced combustion noise through advanced electronic control. Additionally, no visible smoke is emitted from the C7.1 engines during operation.
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Details
Specifications
Ratings
| Spec | Value |
|---|---|
| Power Range | 400 - 500 bhp (298 - 373 bkW) 400 - 500 bhp (298 - 373 bkW) |
Engine Specifications
| Spec | Value |
|---|---|
| Speed Range | 2900 rpm 2900 rpm |
| Rotation from Flywheel End | Counterclockwise Counterclockwise |
| Bore | 4.13 in 105 mm |
| Stroke | 5.31 in 135 mm |
| Aspiration | Turbocharged - Aftercooled Turbocharged - Aftercooled |
| Displacement | 428 in³ 7.01 l |
| Configuration | In-line 6, 4-Stroke-Cycle Diesel In-line 6, 4-Stroke-Cycle Diesel |
| Emissions | IMO II, U.S. EPA Tier 3, RCD II, China II IMO II, U.S. EPA Tier 3, RCD II, China II |
Dimensions & Weights
| Spec | Value |
|---|---|
| Width – Engine | 31.4 in 798 mm |
| Height | 34.5 in 876 mm |
| Engine Dry Weight – Approximate | 1676 lb 760 kg |
| Length – Engine | 43.1 in 1095 mm |
Standard Equipment
Exhaust System
- Water cooled turbocharger and exhaust manifold
Fuel System
- Common rail fuel system
- Fuel cooler
- Electric fuel priming pump
Cooling System
- Corrosion resistant sea water aftercooler
- Gear driven sea water pump (rubber impeller)
- Fin and tube type jacket water heat exchanger
Starting System
- Starter motors – 12V or 24V
General
- Closed crankcase ventilation system
- Integral engine oil cooler
- Vibration damper and guard
- Self-tensioning multi-vee alternator drive belt
Mounting System
- Front and rear engine mounting brackets
Optional Equipment
OPTIONAL ATTACHEMENTS
- Transmission gear oil cooler (engine mounted)
General
- Alternators – 24V 140 amp – 12V 175 amp
- Instrument Panels
- Glow plugs
- Primary fuel filter/water separator (remote mount)
- Selection of factory-fitted marine transmissions and oil hoses
- Triple groove PTO pulley (crankshaft mounted)
- Flexible fuel hoses
Cooling System
- Jacket water heater
- Cabin heater (calorifier) connections
Exhaust System
- 6″ water cooled exhaust elbow
Mounting System
- Isolation mounts
Lube System
- Right-hand and high level left hand oil dipsticks