Details
Weichai X6170ZC650-2 Marine Propulsion Diesel Engine
The Weichai X6170ZC650-2 is a high-performance marine propulsion engine developed for commercial vessels that require dependable power, fuel efficiency, and long-term durability. Rated at 650 HP (478 kW) at 1200 RPM, this engine belongs to the proven Weichai X6170ZC series and is widely used as a marine main engine for fishing boats, cargo vessels, engineering ships, workboats, and coastal transportation fleets.
Built on Weichai's mature 170 mm bore platform, the X6170ZC650-2 combines robust mechanical reliability with efficient fuel utilization. Its medium-speed operating characteristics provide excellent torque output and stable performance under continuous load conditions, making it an ideal choice for vessel owners seeking lower operating costs and extended service life.
As a professional marine engine supplier, HekoPower provides genuine Weichai X6170ZC650-2 marine engines, spare parts support, technical consultation, international shipping, and after-sales service for customers worldwide.
Tech Specs of Weichai X6170ZC650-2
General Engine Data
Engine Model: Weichai X6170ZC650-2
Cylinder Count: 6 / 8 Cylinders in Line
Engine Type: 4-stroke, water cooled, in-line, turbocharged and aftercooled
Total Engine Displacement: 27.24 L / 36.32 L
Bore * Stroke: 170×200 (mm)
Dimensions L×W×H) / net weight: L6 2463×1200×1650 (mm) / 3100kg; L8 2650×1040×1818 (mm) / 3800kg
Key Performance Data
Rated Power: 478 kW / 650 HP
Rated Speed: 1200 RPM
Idle Speed: 450-650 RPM
Minimum fuel consumption rate: 197 g/kW.h
Oil consumption rate: ≤0.5 g/kW.h
Torque reserve: 20-34%
More Technical Data
Certification: IMO Tier II
Aspiration: turbocharged and aftercooled
Starting system: Gas/Electrical
Rotation(facing the flywheel) : Counter-clockwise
Fuel system: Mechanical pump
Power rating: P1
Noise: ≤105 dB(A)
Technical Positioning of the X6170ZC650-2 Propulsion Engine
Understanding where the Weichai X6170ZC650-2 fits within the broader Weichai X6170ZC series helps vessel owners choose the right powertrain. The engineering designation contains specific details about its design: the "X" highlights structural upgrades over older layouts, "6" signifies the inline six-cylinder configuration, "170" indicates the 170mm cylinder bore, "Z" points to turbocharging, and "C" denotes marine propulsion applications. The suffix "650-2" designates the maximum 650HP output at a stable 1200 RPM rated speed.
Weichai X6170ZC650-2 vs X6170ZC620-2
When conducting a Weichai 6170 series engine comparison, commercial operators often evaluate the X6170ZC650-2 against its closest counterpart, the 620-horsepower variant. While both variants share the same inline configuration, 170mm bore, and 200mm stroke, they target different operational demands.
The 620-horsepower model operates with a slightly lower thermal profiling, making it ideal for vessels that experience routine idling cycles. In contrast, the Weichai X6170ZC650-2 marine engine modifies the fuel injection volume via an optimized mechanical pump system. This modification unlocks an additional 30 horsepower without increasing the rated speed beyond 1200 RPM. This makes the 650HP version the best 650HP marine diesel engine option when you need maximum continuous bollard pull or steady cruising speeds under heavy loads.
Advantages of a Medium Speed Marine Diesel Engine 650HP Platform
High-speed marine engines often require frequent maintenance turnarounds due to the internal friction caused by running at 1800 to 2100 RPM. The Weichai 478kW marine diesel engine operates down at 1200 RPM, classifying it firmly as a medium speed marine diesel engine 650HP solution.
The lower mechanical velocity directly prolongs component life, decreases internal operating temperatures, and brings down the Weichai X6170ZC650-2 fuel consumption profile to a highly efficient 197g/kW·h minimum rate. This gives vessel owners a balance of high torque capacity and long-term fuel efficiency.
Real Application Scenarios for the Weichai X6170ZC Series
A commercial marine main engine must handle specific regional water dynamics and hull resistances. The physical construction of the Weichai ship propulsion engine—featuring a heavy gantry-type cast iron block, single-piece forged crankshaft, and individual cylinder heads—makes it highly effective for diverse heavy-duty commercial vessels.
Weichai Fishing Boat Engine Applications
For deep-sea fishing trawlers, engine reliability is a matter of crew safety. The 650HP marine engine for fishing boat operations provides the steady power needed when dragging heavy nets against strong ocean currents. The engine's high torque reserve, ranging from 20% to 34%, ensures that the vessel maintains structural momentum without stalling the propulsion line when nets fill or seas worsen.
Weichai Cargo Vessel Engine and Coastal Transport
Coastal transport vessels and short-sea cargo ships require an engine that can handle long duty cycles. As a specialized marine power system, this engine carries a P1 continuous rating. This means it can run at 100% full load for unlimited annual hours, making it an excellent choice as a Weichai cargo vessel engine or Weichai engine for coastal transport vessel setups.
Heavy Engineering Boats, Tug Boats, and Workboats
Whether it is a Weichai engine for engineering boat dredging operations, a Weichai engine for tug boat docking maneuvers, or a general Weichai engine for workboat transport, the mechanical injection system remains highly resilient. It easily handles variable fuel quality in remote ports, ensuring that workboat fleets stay operational with minimal downtime.
Maintenance and Replacement Tips for Longevity
The Weichai 6170 engine overhaul period 20000 hours target is highly achievable, but it depends heavily on structured maintenance and using genuine components. As a dedicated Weichai marine engine supplier, HekoPower recommends following a strict component replacement schedule.
Essential Weichai Marine Engine Overhaul Parts
When an engine approaches its major service interval, using a generic maintenance kit increases the risk of early component failure. The high combustion pressures inside this 27.24L block require specialized metallurgy.
- Weichai 6170 Cylinder Liner: Replace liners that show vertical scoring or oval wear that exceeds factory tolerances. Genuine liners feature a cross-hatched internal finish that retains lubricating oil effectively.
- Weichai 6170 Piston Kit: Always replace pistons, wrist pins, and rings as a single matched assembly. Genuine pistons include internal cooling galleries that handle heat from continuous 478kW output.
- Genuine Weichai 6170 Engine Parts: Avoid mixing aftermarket valvetrain or bearing shells with original components. Incorrect clearances can disrupt oil pressure across the crankshaft journals.
Preventive Routine Maintenance Guidelines
To maximize the service life of your Weichai vessel diesel engine, check the dual-skinned fuel pipes and the integrated leakage collector during daily pre-start inspections. Clean the washable air filter element regularly, especially when operating in dusty coastal industrial zones. Additionally, utilize the built-in capability to replace fuel filters while the engine is running to prevent debris from reaching the mechanical inline P-type injection pump during long voyages.
Sourcing and Procurement from HekoPower
Navigating the procurement process for a heavy industrial diesel powertrain requires clear communication regarding technical data, logistics, and localized customization. HekoPower streamlines the purchasing cycle for international fleet managers and shipbuilders alike.
Weichai X6170ZC650-2 Price and Quotation Details
When looking to buy Weichai X6170ZC650-2 marine engine units, the initial Weichai X6170ZC650-2 price can vary based on the required classification society certifications. Engines that require specialized oversight—such as ABS, BV, CCS, DNV, or LR compliance—undergo individual factory trial witnessing. HekoPower provides an itemized Weichai X6170ZC650-2 quotation that breaks down the base engine cost, optional air starting systems, extended wiring harnesses, and specific shipping arrangements.
Logistics, Lead Time, and Export Packaging
As an established genuine Weichai X6170ZC650-2 exporter, HekoPower coordinates heavy-freight shipping from China Weichai marine engine manufacturer facilities directly to your shipyard. The typical Weichai X6170ZC650-2 lead time averages around 40 days, which includes factory calibration, certification logging, and export preparation. Every engine is mounted on heavy shipping skids, treated with anti-corrosion barriers for ocean transit, and wrapped in heavy industrial protective packaging.
Weichai WP10 series marine diesel engine, original products from Weichai. This series mainly includes WP10C313-21, WP10C350-18, WP10C375-21, WP10C395-22.
Frequently Asked Questions
What are the exact structural dimensions and weight of the engine?
The Weichai X6170ZC650-2 engine dimensions feature a standard footprint layout measuring approximately 2463 mm in length, 1200 mm in width, and 1650 mm in height. The net dry Weichai X6170ZC650-2 weight sits at roughly 3100 kg. This compact size allows it to fit easily into traditional mid-sized vessel engine rooms during retrofits.
Which classification society certificates are available for this model?
This marine engine can be supplied with major international marine certifications. Depending on your vessel’s registration requirements, HekoPower can deliver the engine with CCS, BV, ABS, DNV, GL, LR, KR, NK, RINA, or RS documentation, along with full IMO Tier II and EIAPP emissions compliance.
Can I get a full technical data sheet for installation planning?
Yes, HekoPower provides the complete Weichai X6170ZC650-2 marine diesel PDF manual and technical data drawing sets to clients during the project design phase. These documents contain the necessary torsional vibration details, cooling water intake sizing, and exhaust backpressure limits needed by naval architects.
What options are available for starting systems?
The standard configuration uses a 24V electric starter motor accompanied by a high-output charging alternator. For vessels with specific safety mandates or cold-weather requirements, an optional air starting system with dedicated compressed air storage bottles can be integrated at the factory.
How does HekoPower handle the supply of ongoing spare parts?
HekoPower maintains a comprehensive inventory of Weichai X6170ZC650-2 spare parts and pre-packaged Weichai X6170ZC650-2 maintenance kit options. This ensures that whether you need routine filtration elements or critical engine overhaul parts, we can arrange fast air-express delivery to minimize your time in port.
