If you’re looking at a Honda with a 2.4-liter engine under the hood, you might just have the K24W1. Understanding the Honda K24W1 Engine Specs and Performance is key to appreciating this modern powerplant. This engine represents a significant evolution in Honda’s long-running K-series family, balancing efficiency with a surprising punch.
It’s found in some of Honda’s most popular models from the last decade. We’re going to look at everything that makes it tick, from its basic dimensions to how it feels on the road.
Honda K24W1 Engine Specs and Performance
This heading marks the core of our technical look. The K24W1 isn’t just another four-cylinder; it’s a carefully engineered piece of machinery. Below, we break down its fundamental specifications in a clear, easy-to-read format.
Core Technical Specifications
Let’s start with the hard numbers that define the engine’s architecture and output. These are the baseline figures every enthusiast or owner should know.
- Engine Code: K24W1
- Displacement: 2.4 liters (2356 cc)
- Configuration: Inline-4 (I4), transverse mount
- Bore x Stroke: 87 mm x 99.1 mm
- Compression Ratio: 11.1:1
- Valvetrain: DOHC, 16-valve, i-VTEC
- Fuel Delivery: Direct Injection (DI)
- Horsepower: 185 hp @ 6400 rpm (in most applications)
- Torque: 181 lb-ft @ 3900 rpm (in most applications)
- Redline: 6800 rpm
Key Design Features and Innovations
The specs tell part of the story, but the engineering behind them is what matters. Honda packed several advanced technologies into the K24W1 to meet modern demands.
Earth Dreams Technology Foundation
The K24W1 is part of Honda’s Earth Dreams family. This isn’t just a marketing term. It signifies a suite of technologies aimed at reducing friction, improving thermal efficiency, and enhancing power delivery. You get the benefits of better fuel economy without sacrificing driving enjoyment.
Dual i-VTEC System
This is a big one. Unlike older VTEC systems that only affected the intake valves, the K24W1’s i-VTEC governs both intake and exhaust camshafts. It can continuously vary valve timing on both sides. This allows for two key profiles: an economical mode for low-RPM cruising and a powerful mode for high-RPM acceleration. The transition is seemless.
Direct Injection (DI)
Fuel is sprayed directly into the combustion chamber at high pressure. This allows for more precise fuel control, cooler combustion chambers, and that higher 11.1:1 compression ratio. The result is improved efficiency and a bit more power from every drop of fuel.
Friction-Reducing Measures
Honda engineers went to great lengths to reduce internal drag. They used low-friction piston rings, an offset cylinder block design, and a special treatment on the cylinder walls. Less friction means more of the engine’s power gets to the wheels instead of being lost as heat and noise.
Performance Characteristics and Driving Feel
So what do all these specs and features feel like from the driver’s seat? The K24W1 has a distinct personality that sets it apart from earlier K24 engines.
You notice the torque first. With 181 lb-ft peaking at just 3900 rpm, the engine feels strong and responsive in everyday driving. You don’t need to rev it hard to get moving, which makes for relaxed around-town performance. The direct injection gives it a crisp throttle response.
When you do decide to push it, the i-VTEC system comes into play. While the “VTEC kick” of older engines is more subdued, there’s still a noticeable swell of power in the mid-to-high RPM range. It pulls strongly to its 6800 rpm redline, emitting a smooth, refined growl. The power delivery is linear and predictable, which inspires confidence.
Models and Applications
You’ll find the K24W1 engine in several key Honda models from the 2010s. Knowing which car it’s in helps understand its tuning and role.
- Honda CR-V (2015-2016): Here, it served as the sole engine option, tuned for a blend of SUV power and efficiency.
- Honda Accord (2013-2017): In the Accord sedan and coupe, it was the base engine, offering a great balance for daily driving.
- Acura ILX (2016-2018): For Acura’s entry-level sedan, the K24W1 provided a premium, smooth power source.
It’s important to check your specific vehicle’s documentation, as calibration can vary slightly between models. For instance, the Accord might have a slightly differant tune than the CR-V.
Maintenance and Reliability Considerations
The K24W1 has a strong reputation for reliability, but it has specific needs. Following the correct maintenance schedule is crucial for long-term health.
Critical Maintenance Items
Here are the areas that demand your attention:
- Oil Changes: Use a high-quality 0W-20 full synthetic oil. Stick to the 5,000-7,500 mile interval, especially with direct injection.
- Direct Injection Cleaning: Carbon buildup on intake valves is common with DI engines. Consider a professional walnut blasting service every 60,000-80,000 miles if you notice rough idle or lost power.
- Timing Chain: It uses a durable chain, not a belt. It rarely needs replacement but listen for unusual rattling at startup.
- Spark Plugs: Iridium-tipped plugs have a long service life (often around 100k miles), but don’t ignore them forever.
Common Issues to Watch For
No engine is perfect. Being aware of potential problems helps you catch them early.
- Oil Dilution: In some very cold-climate, short-trip driving conditions, fuel can dilute the engine oil. Check your oil level and smell regularly.
- VTC Actuator Rattle: A brief rattling noise on cold starts can indicate a worn Variable Timing Control actuator. It’s a known but not catastrophic issue.
- Engine Mounts: The hydraulic engine mounts can wear out, leading to increased vibration in the cabin, especially during acceleration.
Tuning and Modification Potential
For those looking to extract more performance, the K24W1 has a solid foundation. However, its design presents some unique challenges compared to older K-series engines.
The high 11.1:1 compression ratio and direct injection mean you must be careful with tuning. Forced induction (turbocharging or supercharging) requires careful fuel and timing management to avoid detonation. It’s often safer to work with a tuner experienced specifically with Earth Dreams engines.
Basic bolt-ons like a cold air intake or exhaust system will yield modest gains and improve sound. The most significant naturally aspirated gains usually come from more aggressive cams and a custom tune, but this can be expensive. Remember, the focus of this engine was factory efficiency, so massive power gains aren’t as simple as with some predecessors.
Comparison to Other K24 Engines
How does the W1 stack up against its siblings? This context is helpful for Honda fans.
The K24W1 is more advanced but less “raw” than legendary engines like the K24A2 from the Acura TSX. The A2 used port injection and a more aggressive VTEC system, making it a favorite for high-RPM power. The W1, with its direct injection and dual i-VTEC, makes more torque lower down and gets better fuel economy.
It’s a classic trade-off: technological progress for better daily driving, with a slight shift away from peaky, high-revving character. For a daily driver, the W1’s broad torque curve is often more enjoyable.
Fuel Economy and Efficiency
This is a major strong point. Thanks to Earth Dreams tech, the K24W1 delivers impressive MPG figures for a 2.4-liter engine.
In the Honda Accord, you could expect real-world numbers around 26 mpg city and 34 mpg highway. The CR-V, being heavier and less aerodynamic, would see slightly lower figures. The combination of direct injection, high compression, and intelligent VTEC allows the engine to operate in its most efficient mode as often as possible. You get the power when you need it without constant penalty at the pump.
Long-Term Ownership Summary
Is the K24W1 a good engine to live with for the long haul? The answer is generally yes, with a few caveats.
Its reliability is proven, with many examples exceeding 150,000 miles with basic care. The driving experience is refined, smooth, and sufficiently powerful for most needs. The main considerations are the potential for carbon buildup (a trait of most DI engines) and the need for strict adherence to oil change intervals. If you adress these, the K24W1 will serve you faithfully for years.
FAQ Section
What is the horsepower of the K24W1 Honda engine?
In most applications, like the Accord and CR-V, the Honda K24W1 engine produces 185 horsepower at 6400 RPM.
Is the Honda K24W1 a reliable engine?
Yes, it has a strong reputation for reliability. Key maintenance points include regular oil changes with 0W-20 synthetic and monitoring for carbon buildup on the intake valves due to its direct injection system.
What cars use the K24W1 engine?
You’ll find it in the 2015-2016 Honda CR-V, the 2013-2017 Honda Accord, and the 2016-2018 Acura ILX. Always verify with your VIN to be certain.
Can you turbocharge a K24W1 engine?
While possible, turbocharging is complex due to the engine’s high 11.1:1 compression ratio and direct injection. It requires expert tuning, lower-compression pistons, or a very conservative boost setup to avoid engine damage. It’s not as straightforward as older K-series engines.
What’s the difference between K24W1 and K24Z7?
The K24Z7 (found in earlier CR-Vs) uses port fuel injection and a lower compression ratio. The K24W1 uses direct injection, has a higher compression ratio, and features a more advanced dual i-VTEC system, resulting in more torque and better fuel economy.
How often should I change the spark plugs in a K24W1?
Follow your owner’s manual, but the iridium spark plugs in the K24W1 typically have a service interval of around 100,000 miles. However, if you experience misfires or rough running, check them sooner.