Vertical V-Twin Engine Manufacturer
Fullas is a professional manufacturer of vertical V-twin engines for generators and industrial power equipment. Our engines feature a compact vertical layout, stable dual-cylinder output, and reliable performance under continuous operation, delivering fuel efficiency, durability, and long service life for construction sites, workshops, outdoor power systems, and backup power applications.
Vertical V-twin Engine
Fullas vertical V-twin engines deliver stable and efficient power for a wide range of industrial applications. Featuring a compact vertical layout and balanced dual-cylinder design, they provide smooth operation, strong torque output, and reliable performance for generators, outdoor equipment, workshops, and backup power systems. Built with durable components and factory-tested for quality, Fullas vertical V-twin engines offer dependable power you can trust.
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Twin-Cylinder Engine Technology
Reduced Noise & Vibration
Advanced CAE analysis technology is applied to optimize key component structures, effectively reducing engine vibration and operating noise. The optimized design ensures smoother operation and improved comfort during long-hour use.
Superior Reliability
The engine is equipped with an imported fuel pump to ensure stable and reliable fuel delivery. A full-pressure lubrication system is adopted to reduce internal wear and extend engine service life.
In addition, a dual-layer cyclone-type air filter with a special filter element is used to effectively prevent dust and impurities from entering the engine under harsh working conditions.
Powerful Output
The 90-degree V-twin OHV configuration combines compact dimensions with large displacement, delivering strong and consistent power output.
Optimized valve timing improves air intake efficiency and combustion performance, increasing power output by 5–10% compared with engines of the same displacement.
Low Oil Consumption
An optimized air-cooling duct structure combined with an oil cooler helps reduce operating oil temperature. The labyrinth-type oil-air separation design further minimizes oil loss, resulting in lower oil consumption and improved long-term operating efficiency.
WHAT SETS US APART?
EFI Engine Comparison Chart
| Model | FP2P73F | FP2P76F | FP2P77F | FP2P80F | FP2P82F |
|---|---|---|---|---|---|
| Engine Type | V-twin cylinder, Air cooled, 4-stroke, OHV | ||||
| Displacement (cc) | 586 | 635 | 708 | 764 | 803 |
| Net Power (kw/3600r/min) sae J1349 | 12.5 | 13.5 | 16 | 17 | 18 |
| Bore X Stroke (mm) | 73×70 | 76×70 | 77×76 | 80×76 | 82×76 |
| Net Torque (Nm / R / Min) | 37/2400 | 40/2400 | 47.5/2400 | 52/2400 | 55/2400 |
| Starting System | Electric | Electric | Electric | Electric | Electric |
| Lubrication System | Splash+pressure | Splash+pressure | Splash+pressure | Splash+pressure | Splash+pressure |
| Air Filter | Dual-filter element | Dual-filter element | Dual-filter element | Dual-filter element | Dual-filter element |
| Engine Oil Capacity (L) | 1.7 | 1.7 | 2.4 | 2.4 | 2.4 |
| Net Weight (kg) | 36 | 36 | 42 | 42 | 42 |
| Product Dimension (L × W × H) (mm) | 430×425×412 | 430×425×412 | 466×480×356 | 466×480×356 | 466×480×356 |
| Loading Qty (20GP/40HQ) | 480/810 | 480/810 | 440/700 | 440/700 | 440/700 |
Key Technologies Inside Fullas Vertical V-Twin Engine
Fullas vertical V-twin engines combine a compact vertical layout with balanced dual-cylinder architecture and precision mechanical engineering. Each core structure is carefully designed to improve power stability, durability, and long-term operating reliability. The following key technologies define the performance advantages of our vertical V-twin engines in demanding applications.
Commercial V-Twin OHV Structure
All models use a V-twin cylinder, 4-stroke OHV design, providing smoother operation, better balance and more stable power output for generators, industrial machinery and commercial equipment.
High Torque Output For Heavy-Duty Applications
The series delivers strong low-speed torque from 37 N·m to 55 N·m at 2400 rpm, helping support demanding loads and continuous operation in construction and industrial environments.
Electric Start System Across The Full Range
Every model is equipped with an electric starting system, improving convenience and reducing startup effort for larger displacement commercial engines.
Dual-Filter Air Intake Protection
The engines use dual-filter air cleaner systems to improve dust filtration and air intake protection, helping extend engine life in outdoor and heavy-duty working conditions.
Splash + Pressure Lubrication System
Combined splash and pressure lubrication improves internal engine protection, supports stable lubrication during long working hours and enhances durability under continuous load.
EPA & EURO-V Compliant Engine Platform
The FP2P series is designed to meet EPA and EURO-V emission standards, offering lower emissions and making the engines suitable for export markets and OEM commercial applications.