Yamaha FJR1300 Engine Displacement, Valvetrain, FI System

The Yamaha FJR1300 features a powerful 1298cc inline four-cylinder engine with a displacement of 1298cc.

With its 10.8:1 compression ratio and advanced electronic fuel injection system, the engine generates an impressive 142 horsepower at 8000 rpm and 99 ft-lbs of torque at 7000 rpm.

The engine uses 4.2 quarts of oil and has a transverse-mounted, liquid-cooled configuration with four valves per cylinder.

The FJR1300 combines its muscular engine performance with a smooth-shifting shaft final drive transmission, making it a sport-touring motorcycle with plenty of power for everything from commuting to cross-country rides.

Yamaha FJR1300 Displacement & Configuration

The Yamaha FJR1300 features a powerful 1,298cc inline four-cylinder engine with a bore and stroke of 79mm x 66.2mm.

This oversquare engine design allows for increased power output due to the larger bore size.

The engine has a compact DOHC design with four valves per cylinder to improve breathing and power delivery across the rev range.

Yamaha FJR1300 Bore & Stroke

As mentioned, the FJR1300 has a bore and stroke of 79mm and 66.2mm respectively.

This oversquare configuration favors torque and power over low-end grunt.

The larger 79mm bore size enables the use of bigger valves and more airflow into the combustion chamber.

Coupled with the shorter 66.2mm stroke, the FJR1300 can safely rev higher and produce more peak power.

Yamaha FJR1300 Engine Specifications

Yamaha FJR1300 Horsepower and Torque

The 1298cc inline-four produces 142 horsepower at 8,000 RPM and 99 ft-lbs of torque at 7,000 RPM because of excellent combustion efficiency and breathing capabilities.

This gives the FJR1300 a wide powerband and muscular mid-range punch for strong acceleration.

Read our article on FJR1300 Horsepower specifications for a detailed overview of the engine’s power and torque.

Yamaha FJR1300 Transmission

The engine utilizes a smooth-shifting 5-speed transmission with optimized gear ratios for acceleration and relaxed cruising.

A hydraulically actuated slipper clutch prevents rear wheel hop during aggressive downshifts, improving stability and control.

Head over to the linked article to learn more about the FJR1300’s transmission.

Yamaha FJR1300 Compression Ratio

FJR has a high 10.8:1 compression ratio, so it uses the fuel-air mixture efficiently.

This squeezes the air/fuel mix aggressively for maximum energy extraction per combustion cycle.

The high compression ratio improves thermal efficiency and provides knock-free operation because of the precise fuel injection system.

Yamaha FJR1300 Valvetrain Configuration

The DOHC setup uses lightweight forged aluminum buckets with shim-type valve adjustment.

Each cylinder gets two intake and two exhaust valves made from durable steel.

The four-valve head improves breathing while the shim adjustment enables precise valve control with low maintenance.

Yamaha FJR1300 Fuel Injection System

Modern fuel injection takes the guesswork out of tuning carburetion.

The FJR1300 has advanced electronic fuel injection for crisp throttle response and optimal fuel mapping.

Sensors constantly monitor engine parameters while the ECU precisely calculates the fueling requirements.

This results in excellent throttle response, easy starting, and maximum power delivery.

Yamaha FJR1300 Liquid Cooling

To handle the excessive heat from generating high power levels, the FJR1300 engine integrates advanced liquid cooling.

A high-capacity radiator, water pump, thermostat, and fan maintain optimum operating temperatures in traffic or during spirited riding.

This improves engine durability and consistency during extreme demands.

Yamaha FJR1300 Engine Specifications

Performance Metrics

With its torque-biased power delivery, the FJR1300 can sprint from 0-60 mph in just 3.2 seconds.

Quick acceleration gives the FJR1300 a decidedly sporty feel despite the touring design.

Top speed is limited to 150mph, providing a thrilling rush when the road opens up.

Yamaha FJR1300 Lubrication System

To enhance engine longevity, the FJR1300 utilizes a wet sump lubrication system.

An oil pump circulates oil to critical components while the oil filter cleans contaminants.

Oil jets beneath the pistons provide cooling and anti-friction properties.

Overall, the advanced lubrication system minimizes wear for extended engine life.

Yamaha FJR1300 Engine Oil

Recommended oil grades are SAE 5W-40 or SAE 10W-40 fully synthetic or semi-synthetic 4-stroke motor oil meeting API service classification SH or higher.

Honda recommends major brands like Mobil 1, Castrol, and Shell Rotella for optimal performance.

Fully synthetic oils from brands like Mobil 1, Motul, and Liqui Moly are best for high-performance engines.

Yamaha FJR1300 Engine Oil Capacity

Honda ST1300 engine oil capacity is 3.9 quarts (3.7 liters) without changing the oil filter, it increases to 4.1 quarts (3.9 liters) if you replace the oil filter.

Honda suggests changing the oil and filters every 8,000 miles or 12 months.

Yamaha FJR1300 Fuel Efficiency

While powerful, the FJR1300 engine maintains excellent fuel efficiency thanks to the precise injection system and four-valve head.

Expect around 40-45 mpg during normal riding conditions, giving the 5.8-gallon tank a decent range.

Even aggressive backroad riding will stay in the high 30s for mpg.

You wouldn’t want to miss our article on FJR1300 fuel efficiency.

Engine Capacity/Engine Displacement1298cc
Engine Oil Capacity4.2 quarts
Engine Configurationtransverse-mounted inline-four engine with four valves per cylinder
CarburetionElectronic fuel injection
Bore x Stroke 79x 66.2mm
Compression Ratio10.8:1
Maximum power Output142 hp
Maximum Torque99 ft-lbs @ 7,000 RPM
Cooling systemLiquid
Transmission typeShaft Final Drive

Engine Emission Standards

The FJR1300 meets the strict Euro 4 and EPA emission standards.

Advanced fuel injection, the three-way catalytic converter, and precision engineering result in ultra-low tailpipe emissions.

This keeps the FJR1300 environmentally friendly in all conditions.

Hassle-Free Maintenance

With modern engineering, the FJR requires minimal maintenance.

Oil changes every 6,000 miles keep the engine protected while valve adjustments are only required every 26,000 miles.

Easy-access filters simplify maintenance too.

Basic maintenance is enough to keep the engine in mint condition.

Yamaha FJR1300 Engine Reliability

FJR1300 engine has proven extremely reliable across tens of thousands of miles because of rigorous engineering, premium materials, and extensive testing.

Following the maintenance schedule consistently results in trouble-free operation for the engine and drivetrain.

Conclusion

The Yamaha FJR1300 has an outstanding inline-four engine optimized for real-world sport-touring demands.

Advanced engineering and thoughtful design create a powerplant that’s both thrilling and practical.

With excellent power delivery, refined ride quality, and proven reliability, the FJR1300 engine has become a benchmark in the category.

For riders seeking uncompromising performance and everyday usability, it’s easy to see why the FJR1300 remains a top choice.

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