| Attribute | Specification |
|---|---|
| Production Years | 2014 – 2016 |
| Engine Type | 1832cc SOHC Liquid-cooled Flat-Six |
| Engine Oil | SAE 10W-30 API SG (3.7 L) |
| Tire Size (Front) | 130/60R19 M/C 61H |
| Tire Size (Rear) | 180/55R17 M/C 73H |
| Battery Type | YTZ14S |
| Spark Plug | NGK BKR6E-11 |
Engineering Highlight: The 70kg Transformation
A unique engineering feat of the Honda Gold Wing F6C (SC68) is its weight-loss program. By stripping the traditional GL1800 of its fairings, luggage systems, and reverse gear, Honda engineers managed to shed approximately 70kg (154 lbs). This transformed the platform from a trans-continental tourer into a ‘Power Cruiser’ with a significantly lower center of gravity and a visceral power-to-weight ratio that allows the 1,832cc flat-six to accelerate with surprising urgency.
Technical Review: Performance and Handling
The SC68 variant, often referred to as the Valkyrie in international markets, utilizes the legendary horizontally opposed six-cylinder engine. This powerplant is renowned for its near-zero vibration and massive low-end torque. The ‘Halbschale’ (half-shell) design provides a minimalist aesthetic while the twin-spar aluminum frame ensures the bike remains composed during aggressive cornering—a rarity for machines in this weight class.
Maintenance Guide
Lubrication System
To maintain the longevity of the flat-six engine, MotoSpecsLab recommends using 3.7 liters of SAE 10W-30 oil. It is critical to ensure the oil meets JASO MA standards to prevent clutch slippage, as the F6C uses a shared sump for the engine and transmission.
Tires and Traction
The SC68 utilizes a unique tire combination to balance cruiser aesthetics with touring stability. The front 19-inch wheel requires 2.5 bar (36 psi), while the 17-inch rear requires 2.8 bar (41 psi). Proper inflation is vital to prevent ‘cupping’ of the front tire, a common issue on heavy flat-six platforms.
Electrical & Ignition
The ignition system relies on six NGK BKR6E-11 plugs. Given the engine’s layout, access is relatively straightforward compared to the fully-faired Gold Wing models. The electrical system is anchored by the YTZ14S battery, which provides the high cold-cranking amps (CCA) necessary to turn over the large displacement pistons.
Frequently Asked Questions
Q: How often should the spark plugs be replaced?
A: While NGK BKR6E-11 plugs are durable, we recommend inspection every 12,000 miles to ensure optimal combustion efficiency.
Q: Can I use 10W-40 oil?
A: Honda specifies 10W-30 for the SC68 to ensure proper flow at startup and fuel efficiency, though 10W-40 may be used in consistently high-temperature climates if it meets JASO MA specs.