Volvo Penta D4-320I-G Twin Engine Package: 640hp Total
Professionally paired and calibrated twin diesel installation for optimal performance and reliability
Introduction
The Volvo Penta D4-320I-G Pair represents the pinnacle of twin-engine marine propulsion, combining two sophisticated 320hp diesel engines into a perfectly synchronized power package. This matched set delivers 640hp of total propulsion power while maintaining the compact dimensions and exceptional efficiency that the D4 series is renowned for. At Wave Inboard Motors, our expertise in Marine Engine Installation Services ensures that your twin-engine installation is calibrated for perfect synchronization and optimal performance.
Engineered for luxury yachts, sportfish vessels, and performance cruisers from 40 to 60 feet, this paired configuration offers redundant reliability and superior maneuverability. Each engine features Volvo Penta’s advanced common rail fuel injection and integrated Electronic Vessel Control (EVC), ensuring seamless operation between both powerplants. Whether you’re considering a new build or Marine Engine Repowering Solutions, this twin-engine package provides the ultimate in performance and peace of mind.
Technical Specifications Table
| Specification | Details |
|---|---|
| Engine Model | Volvo Penta D4-320I-G (Pair) |
| Total Power Output | 640 hp (2 x 320 hp) |
| Engine Type | Twin 4-cylinder, turbocharged diesel |
| Displacement | 7.4 liters total (2 x 3.7L) |
| Max Torque | 1180 lb-ft total (2 x 590 lb-ft) |
| Fuel System | Common rail direct injection |
| Control System | Integrated EVC electronic controls |
| Total Weight | Approximately 2092 lbs (2 x 1046 lbs) |
| Gear Ratio | Matched pair with synchronized ratios |
Competitor Comparison Table
| Feature | Volvo Penta D4-320I-G Pair | Competitor Twin Packages | Single Engine Alternative |
|---|---|---|---|
| Configuration | Twin synchronized | Varies | Single engine |
| Total Power | 640 hp | 600-700 hp | 300-400 hp |
| Maneuverability | Excellent | Good | Basic |
| Redundancy | Full redundancy | Limited | No redundancy |
| Installation | Professional pairing | Varies | Simple |
Verdict: The Volvo Penta D4-320I-G twin package offers superior synchronization, full operational redundancy, and the proven reliability of matched components, making it the ideal choice for serious boaters who value safety and performance.
Installation Options Table
| Option | Basic Installation | Professional Package | Premium Turnkey |
|---|---|---|---|
| Calibration | Basic setup | Full synchronization | Perfect synchronization |
| Warranty | Separate engine warranties | Integrated package warranty | Comprehensive coverage |
| Commissioning | Basic sea trial | Full performance validation | Extended testing & tuning |
| Support | Limited | Dedicated technical support | Priority service |
Expert Recommendation: For twin engine installations, we strongly recommend our Professional Package or Premium Turnkey option to ensure perfect synchronization and long-term reliability. The complexity of twin engine calibration demands expert installation and commissioning.
Pros and Cons Table
| Pros | Cons |
|---|---|
| Perfect engine synchronization | Higher initial investment |
| Full operational redundancy | Complex installation requirements |
| Superior maneuverability | Increased maintenance costs |
| Balanced performance | Requires specialized knowledge |
| Integrated control systems |
Frequently Asked Questions (FAQ)
Q1: Why choose a factory-paired engine set over two separate engines?
A: Factory-paired engines are matched for identical performance characteristics, ensuring perfect synchronization and balanced operation. This eliminates the performance variations that can occur when installing two separately sourced engines.
Q2: What is included in the D4-320I-G paired package?
A: The package includes two perfectly matched D4-320I-G engines, synchronized gear ratios, integrated EVC control systems, and all necessary components for a balanced twin-engine installation.
Q3: How does the Electronic Vessel Control (EVC) system manage twin engines?
A: The EVC system continuously monitors and adjusts both engines to maintain perfect synchronization, optimal fuel efficiency, and balanced power output across all operating conditions.
Q4: What maintenance considerations are unique to twin engine installations?
A: Twin engines require synchronized maintenance schedules, balanced propeller tuning, and regular calibration checks to ensure continued perfect operation. Our Scheduled Marine Diesel Maintenance programs are specifically designed for twin-engine applications.
Q5: Can the twin engine package be installed in existing single-engine vessels?
A: While possible, converting from single to twin engine configuration requires significant structural modifications. We recommend a thorough Marine Engine Diagnostic Service to assess feasibility before proceeding.
Q6: What kind of performance improvement can I expect over a single engine setup?
A: Twin engines provide superior acceleration, better maneuverability (especially with counter-rotating props), increased safety through redundancy, and often better fuel efficiency at cruising speeds due to optimized engine loading.
Q7: How does the warranty work for paired engines?
A: Paired engines typically come with synchronized warranty coverage, and when installed by authorized professionals like Wave Inboard Motors, you receive comprehensive package warranty protection.
Q8: What is the installation timeline for a twin engine package?
A: Professional twin engine installation typically requires 4-6 weeks, including precise alignment, systems integration, calibration, and comprehensive sea trials to ensure perfect synchronization.
Q9: Can the twin engines be configured with different gear ratios?
A: While possible for specific applications, we strongly recommend matched gear ratios for optimal performance and synchronization in standard installations.
Q10: What support do you provide after installation?
A: We provide complete after-installation support including commissioning services, operator training, and customized Scheduled Marine Diesel Maintenance plans to ensure long-term reliability and performance.
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