Horizontal Crankshaft


Need loads of horsepower? Fuel-injected, intelligent computer-controlled lineup delivers versatile power and high performance for commercial applications.

Horizontal Crankshaft

Reliability meets Intelligence

iGX800 Features
  • Electronic Fuel Injection. The EFI configuration offers a number of performance enhancements for the new Honda V-twin engines
  • DBW (Drive-by-Wire)
  • STR (Self Tuning Regulator) governor
  • Integration of the ECU architecture into new V-Twin models.
  • Digital CDI ignition system with variable timing
  • Insert style rod bearings
  • Hemispherical combustion chamber delivers rapid combustion
  • 9.1:1 compression ratio generates high-power output without the need for premium fuel
  • Forged steel crankshaft
  • Pressure-fed crankshaft bearings
  • Integrated cylinder and head
  • Racing-inspired forged steel connecting rods
  • High-capacity 36-blade cooling fan
  • Aluminum push rods with steel tips, lighter weight, lower vibration, and quieter operation
  • High-capacity pump facilitates consistent oil delivery
  • Dual element (foam pre-cleaner & paper air cleaner)
  • Large-diameter air intake for superior cooling
  • 3-Year Limited Warranty
  • Oil Alert
  • Easy Diagnostics and Communication
  • Easy communication with CAN bus data logging (SAE J1939)
  • Easily diagnosis with LED Malfunction Indicator Light on the control panel
  • Link with tablet or PC with Dr.H software
  • Auto choke function
  • Running time and number of starts are monitored (no accessory hourmeter is required)
  • Conveniently located controls, with several configurations available based on user preference
  • Automotive-type spin-on oil filter
  • Automatic mechanical de-compression system
  • Variable ignition timing
  • Electronic Fuel Injection
  • Compact base frame footprints of other high-output Honda engines.
  • CARB and EPA certified
  • No catalyst necessary
  • High-capacity charging systems
  • Regulator/Rectifier to match charging system selected
  • A variety of control box configurations
  • Oil pressure or oil level switch
  • Air filter (canister type) mounting plate
  • Fan cover protector
  • Muffler-Right mounted, muffler-Left mounted
  • Spark arrester
  • Hour meter

Efficient Fuel Consumption: Honda V-Twin engines with EFI boast excellent fuel efficiency due, in part, to an electronic control system (ECS, see discussion below) that continually monitors and adjusts the engine's air/fuel ratio according to variable operating conditions and engine load requirements, maintaining optimal combustion conditions.

Adaptability and Enhanced Reliability: In addition to optimizing air/fuel ratios, the Honda V-Twin EFI-equipped engines offer improved ignition timing over the complete range of operating speeds and compensate for other factors to continually maintain optimal performance.

Improved Starting: Honda iGX700/iGXV700 and iGX800/iGXV800 V-Twin engines boast easy starting performance in both hot and cold temperature conditions, such as when the equipment is started cold or temporarily stopped mid-job. The EFI system and high-pressure fuel pump allow for an ideal air/fuel mixture before it is emulsified and vaporized.Because the new Honda V-Twin iGX engines eliminate the need for manual manipulation of the choke and throttle, they also are ideal for rental applications.

Delivering complete drive-by-wire remote control capability for engine operation and benefiting both contractors and the environment, Honda iGX technology results in excellent fuel efficiency, low emissions, and low noise through engine speed that adapts to fluctuating power demands. The result is more consistent output and less stress on industrial equipment and tools.

Providing enhanced performance and quality, the engines are equipped with fuel injection technology and an integrated electronic self-tuning regulator (STR) governor that delivers drive-by-wire remote control capability to manage key aspects of engine operation.

Central to the iGX concept on the new V-Twin models is an integrated ECU with a self-tuning regulator (STR) governor system that allows the engine to communicate with the machine it is powering to achieve optimal performance by monitoring key parameters, controlling engine speed and diagnostics. The ECU enables drive-by-wire remote control operation of the engine, and speed of the models can be programmed and varied based on the load and speed requirements of equipment applications.

Variable timing digital CDI ignition

V-Twin series

Honda’s Variable Timing Digital CDI ignition allows optimal ignition timing based on engine speed. The result:

• Excellent starting,

• High power output,

• Reduced fuel consumption, and

• Outstanding emissions performance.

Hemispherical combustion chamber

V-Twin Series

Honda’s hemispherical combustion chamber was inspired by our proven racing technology. It offers the highest V-Twin compression ratio on the market.

The power is transmitted through forged-steel connecting rods and a forged-steel crankshaft, supported by a full-pressure lubrication system.

• 9.1:1 compression ratio generates tremendous power

• Excellent combustion efficiency

• Allows a radial configuration to create high volumetric efficiency

• Places the spark plug near the center of the chamber for optimal flame travel

This means increased engine efficiency and more power to your application.

Oil alert

V-Twin series

Honda’s Oil Alert system helps to prevent engine seizure due to a low oil condition.

The system consists of an oil level sensor or oil pressure sensor inside the crankcase. When the oil reaches a level that is too low for safe operation, the engine warns you or stops automatically. The engine will shut down and the LED light will flash the code for low oil.

The new Honda V-Twin models feature a control panel with an LED indicator that informs the user about potential problems with diagnostic trouble codes. This indicator is designed either to stop the engine or alert the operator if any corrective actions need to be taken. These alerts protect and help extend the life of the engine.

As a result of Honda's adoption of the Society of Automotive Engineers (SAE) standard J1939 vehicle bus, the recommended practice used for communication and diagnostics among vehicle components, the new Honda V-Twin models offer a standardized method for communication across ECUs for seamless integration between engine and application.

The new Honda V-Twin models feature a control panel with an LED indicator that informs the user about potential problems with diagnostic trouble codes. This indicator is designed either to stop the engine or alert the operator if any corrective actions need to be taken. These alerts protect and help extend the life of the engine.

Communication for diagnosis of the engine utilizes Dr.H software. Linked via USB port to a tablet or PC for quick repairs.

The throttle body is equipped with an ambient temperature sensor and map sensor to adjust the fuel/air ratio for improved startability.

Hour meter is equipped on the control box. ECU logs all engine history, accessible via Dr.H

Automatic mechanical decompression system

All engines

Honda’s automatic mechanical decompression system is designed to give you quicker, easier starts.

This system, which is connected to the camshaft, reduces compression by opening the exhaust valve slightly when the engine is being started. This reduces the amount of force needed to start the engine and improves starting performance.

The system disengages automatically after the engine starts to prevent any power loss during normal operation.

The Honda V-Twin iGX engines with EFI eliminate the need for manual manipulation of the choke and throttle

The new Honda V-Twin models feature high power output in a compact design comparable to the compact base frame footprints of other high-output Honda engines, ranging from the GX630 to the iGX800. The design compatibility minimizes changing time, making it easy for the user to install the new V-Twin models when older engines reach the end of their service lives. The design also allows manufacturers maximum flexibility with current tooling and frames.

  • Service & Warranty

    You can rely on Honda dealers and Honda Genuine Parts.

    Keeping your Honda healthy is an imperative part of maintaining the quality, reliability and performance of your engine.

    Learn More
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