| Component | Specification |
|---|---|
| Engine | 782cc 90° V4, Liquid-cooled, 16V VTEC |
| Engine Oil | SAE 10W-30 (JASO T 903 MA) / 3.2 Liters |
| Tires (Front/Rear) | 120/70 ZR 17 / 180/55 ZR 17 |
| Tire Pressure | F: 2.5 bar (36 psi) / R: 2.9 bar (42 psi) |
| Battery | YTZ12S (AGM) |
| Spark Plug | NGK IMR9E-9HES (Iridium) |
The Honda VFR 800 F (RC79) represents a significant engineering milestone in the V4 lineage. While its predecessor, the VFR1200F, attempted to push into the heavyweight category, the RC79 saw Honda returning to its roots. A unique engineering highlight of the RC79 is the refined VTEC (Variable Valve Timing and Lift Electronic Control) system. Unlike the abrupt transition found in the earlier RC46 models, the RC79 utilizes updated ECU mapping and revised valve timing to deliver a linear, sophisticated surge in power that honors the legacy of the NR750 and RC30.
Technical Review: Engineering & Performance
The heart of the RC79 is the 782cc 90-degree V4 engine. This configuration is inherently balanced, negating the need for heavy balancer shafts. The RC79 iteration focused on mid-range torque and weight reduction, shedding approximately 10kg compared to the previous VFR800 generation. The inclusion of a single-sided Pro-Arm swingarm and a revised stiffened subframe enhances both the aesthetic and the handling precision of the machine.
From a professional perspective, the RC79 is lauded for its build quality. The fit and finish of the bodywork and the integration of the LED lighting system set a benchmark for the sport-touring class during its production run from 2014 to 2021.
Maintenance Guide: Keeping the V4 Purring
1. Lubrication System
The V4 engine demands high-quality shear-stable oil due to the VTEC engagement mechanisms. Use SAE 10W-30 oil meeting JASO T 903 MA standards. The drain and refill capacity with a filter change is 3.2 Liters. Regular intervals of 12,000 km (8,000 miles) are recommended, though annual changes are advised for low-mileage riders.
2. Electrical & Ignition
The RC79 utilizes high-performance NGK IMR9E-9HES Iridium spark plugs. Due to the V4’s compact layout, accessing the front bank of cylinders requires pivoting the radiator, making this a more involved task than on an inline-four. The YTZ12S battery provides the necessary cold cranking amps to start the high-compression V4; ensure terminals are kept clean to prevent regulator-rectifier stress, a historical weak point in the VFR lineage that was largely addressed in this generation.
3. Chassis & Tires
Tire selection is critical for maintaining the RC79’s neutral handling. The standard 120/70 ZR 17 front and 180/55 ZR 17 rear should be maintained at 2.5 bar (36 psi) and 2.9 bar (42 psi) respectively. Given the bike’s 240kg wet weight, maintaining these pressures is vital to prevent cupping and ensure high-speed stability.
Expert Verdict
The Honda VFR 800 F RC79 is perhaps the most refined analog-feeling sport-tourer of the modern era. It offers a perfect balance of mechanical soul and Japanese reliability. For the owner, meticulous adherence to the VTEC valve clearance checks (typically at 24,000-mile intervals) is the key to longevity.