Specifications
The Honda H22 engine is a high-performance 2.2-liter inline-4 petrol engine from Honda’s H-series, widely known for its strong mid-range power and VTEC performance. It features an aluminum DOHC cylinder head, iron block, and VTEC valve timing, delivering between 185 hp to 220 hp depending on the variant, with torque figures ranging from 206–221 Nm. The H22 uses a 16-valve configuration, high compression ratio (around 10.6:1 to 11.0:1), and typically comes paired with a 5-speed manual transmission.
Found in models like the Honda Prelude, Accord SiR, and Prelude Type S, the H22 is respected for its balance of reliability, tunability, and strong naturally aspirated performance, making it a popular choice for enthusiasts and engine swaps.
Engine Variants
H22A (JDM)
The Honda H22A (JDM) is a 2.2-liter, naturally aspirated inline-4 petrol engine developed for the Japanese market. It features an aluminum DOHC VTEC cylinder head paired with a cast-iron block, a 16-valve layout, and a high compression ratio of approximately 11.0:1. Power output ranges from 190 to 220 hp, depending on the specific version, with torque figures around 206–221 Nm. Known for its aggressive VTEC engagement and high-revving nature (up to 7,800 rpm), the JDM H22A was commonly mated to a 5-speed manual transmission and installed in models such as the Honda Prelude SiR, Prelude Type S, and Accord Euro R. Its strong internals and performance-oriented tuning make it one of the most desirable H-series engines.
H22A1 (USDM)
The H22A1 is the U.S.-market version of the H22 engine, introduced in the 4th-generation Honda Prelude. It displaces 2.2 liters (2157 cc) and uses a closed-deck iron block, which offers improved cylinder strength and durability under high loads. This engine features a DOHC VTEC valvetrain, 16 valves, and a compression ratio of about 10.6:1, producing approximately 190 hp and 207 Nm of torque. Paired with a 5-speed manual transmission, the H22A1 delivers strong mid-range performance while maintaining Honda’s renowned reliability, making it a solid platform for mild performance upgrades.
H22A4 (USDM)
The H22A4 is an updated U.S.-spec version used in the 5th-generation Honda Prelude. While it retains the same 2.2-liter DOHC VTEC architecture, Honda switched to an open-deck block design to reduce weight and improve cooling efficiency. The engine produces around 200 hp and 212 Nm of torque, with a compression ratio similar to earlier variants. It is OBD-2 compliant, meeting stricter emissions standards while still offering strong naturally aspirated performance. The H22A4 was exclusively paired with a 5-speed manual transmission and remains popular among enthusiasts for daily driving and engine swap projects.
Frequently Asked Questions
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Will the H22 engine feel noticeably faster than my stock Honda engine?
Yes, absolutely. From my experience, the H22 feels much stronger once VTEC kicks in. The acceleration at higher RPMs is a big step up compared to non-VTEC or smaller Honda engines.
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Is the H22 engine suitable for daily driving, or is it just for performance builds?
I use it for daily driving, and it’s very manageable. As long as it’s maintained well, it drives smoothly in traffic and really comes alive when pushed.
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How expensive is it to maintain an H22 engine?
Maintenance costs are reasonable, but I’ve learned oil changes are critical. Ignoring oil quality or intervals can lead to problems, especially because it’s a high-revving engine.
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Does the H22 engine overheat easily?
In my case, it stays cool as long as the cooling system is healthy. A good radiator, proper coolant, and working fans make a big difference.
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Is the H22 engine still worth buying today?
Yes, if you want a naturally aspirated Honda engine with real character. Even today, the H22 offers exciting VTEC power, strong reliability, and great tuning potential.
Honda H22 Engine
