The Vanguard® 29,9 Gross kW EFI/ETC BIG BLOCK™ engine represents the peak of Vanguard’s horizontal shaft EFI line, developed through close collaboration with OEMs needing unparalleled power, torque, and dependability. Designed as a diesel alternative, it provides real-time adaptive fuel and throttle control through a closed-loop EFI and Electronic Throttle Control (ETC) system. With exceptional torque delivery, automatic altitude adjustments, superior stale fuel resistance, and industry-leading fuel efficiency, this 40 HP powerhouse is purpose-built for the most demanding agricultural, construction, and industrial platforms.
- Power for heavy-duty tasks: High-torque V-Twin design ensures consistent power for large-scale machines in extreme conditions.
- Smooth operator: Dynamically balanced internals reduce vibration and operator fatigue.
- Efficient power delivery: EFI and ETC deliver better starts, adaptive throttle control, and improved fuel use.
- Durable design: Built from rugged materials with cast iron sleeves and high-efficiency filtration for long-term operation.
Features & Benefits
- Improved Sound Quality
Engineered blower housing and flywheel fan reduce noise and deliver a smoother acoustic signature in operation. - V-Twin OHV Technology
V-Twin configuration with overhead valves increases torque and improves combustion efficiency, enhancing power output and durability. - Smooth Easy Starting
Mechanical compression release and Magnetron® ignition ensure fast, maintenance-free starts; optional solenoid shift and recoil starters available. - Maximum Durability
Robust aluminum block paired with cast iron sleeves withstands intense wear and optimizes oil control under sustained load. - Cyclonic Air Cleaner
Advanced five-inch cyclonic air filtration guards internal components from airborne particulates in harsh environments. - Electronic Fuel Injection (EFI)
Closed-loop automotive-grade EFI system ensures real-time fuel management for smoother starts and up to 25% fuel savings.* - Electronic Throttle Control (ETC)
ETC instantly reacts to load changes via RPM sensing and throttle body adjustment, maintaining constant power under variable demand. - Extended Engine Life
Spin-on oil filter, dual ball bearings, and full-pressure lubrication protect critical parts, supporting long operational life. - Superior Balance
Balanced crankshaft and lightweight piston/ring set reduce vibration, enhancing durability and performance consistency. - High Efficiency Head Design
Angled ports improve air-fuel mixing, delivering cleaner emissions, smoother idle, and higher efficiency.
Specifications
| Engine Type: | V-Twin, 4-stroke, air-cooled, OHV |
| Model Number: | 61G2 |
| Gross Power @ 3600 rpm: | 29.9 kW / 40.0 HP* |
| Displacement: | 993 cc |
| Cylinder: | Cast iron sleeve |
| Bore & Stroke: | 85.5 mm x 86.5 mm |
| Fuel Tank Capacity: | N/A |
| Oil Capacity: | 2.3 liters |
| Compression Ratio: | 8.2 : 1 |
| Air Cleaner: | Five-Inch Cyclonic Air Cleaner |
| Ignition System: | Computer Controlled Battery Ignition |
| Lubrication System: | Full Pressure with Spin-On Oil Filter |
| Dimensions (L x W x H): | 561 x 514 x 626 mm |
| Dry Weight: | 56.7 kg |
| Optional Features: | Low Profile Air Cleaner, Oil Pressure Switch, Flywheel Stub Shaft, High and Mid Mount Mufflers, Alternators (9–50 amp), Key Switch, Tach/Hour Meter with Check Engine Light, Spline Crankshaft |
*Power levels are stated gross kilowatts per SAE J1940 as rated by Briggs & Stratton. Fuel savings may vary depending on usage conditions and application design.
