The Honda D17A9 engine is a powerful and reliable engine that was manufactured by Honda from 2001 to 2005. This engine was typically found in the Honda Civic Coupe ES in Europe during this time.
Understanding the engine specs and performance of the D17A9 is crucial for car enthusiasts, potential buyers, and anyone interested in the automotive industry.
Engine specs and performance review help to determine the capabilities, strengths, and weaknesses of an engine.
They also provide valuable insight into how the engine performs in real-world driving conditions, which is critical information for anyone considering purchasing a car with this engine.
In this blog post, we will delve into the details of the Honda D17A9 engine, exploring its specs and performance.
Honda D17A9 Engine Overview
The Honda D17A9 is a 1.668-liter inline four-cylinder engine that was manufactured by Honda between 2001 and 2005. This engine was used in the Honda Civic Coupe ES in Europe and was known for its impressive power and reliability.
The engine has a bore and stroke of 75 mm x 94.4 mm and a rod length of 140 mm, giving it a rod/stroke ratio of 1.48.
The compression ratio of the D17A9 is 9.9:1, which allows it to produce a maximum power output of 125 PS (92 kW) at 6,300 RPM and a maximum torque of 145 N⋅m (107 lb⋅ft) at 4,800 RPM.
One of the key features of the D17A9 engine is its SOHC VTEC-E valvetrain, which provides four valves per cylinder. The VTEC switchover occurs between 2,500 and 3,200 RPM, and the engine is equipped with an OBD-2 MPFI fuel control system.
The RPM redline of the D17A9 is 6,800 RPM, and the rev-limiter is set at 7,200 RPM. This high rev limit allows the engine to rev freely, providing improved acceleration and performance.
In summary, the Honda D17A9 is a compact, powerful, and efficient engine that was designed for excellent performance in the Honda Civic Coupe ES.
With its high-revving capability, advanced valvetrain, and fuel control system, the D17A9 is a prime example of Honda’s engineering prowess and dedication to producing high-quality engines.
Specification table for D17A9 engine
| Specification | Value |
| Displacement | 1,668 cc (101.8 cu in) |
| Bore and Stroke | 75 mm × 94.4 mm (2.95 in × 3.72 in) |
| Rod Length | 140 mm |
| Rod/Stroke | 1.48 |
| Compression | 9.9:1 |
| Power | 125 PS (92 kW) at 6,300 RPM |
| Torque | 145 N⋅m (107 lb⋅ft) at 4,800 RPM |
| RPM redline | 6,800 RPM |
| Rev-limiter | 7,200 RPM |
| Valvetrain | SOHC VTEC-E, 4 valves per cylinder |
| VTEC Switchover | 2,500 – 3,200 RPM |
| Fuel Control | OBD-2 MPFI |
Source: Wikipedia
Comparison With Other D17 Family Engine Like d17A1 and D17A2
The Honda D17A9 is part of the D17 family of engines, which includes other popular engines such as the D17A1 and the D17A2. While all three engines belong to the same family, there are several key differences between them.
Compared to the D17A1, the D17A9 has a higher power output, producing 125 PS compared to the D17A1’s 115 PS. The D17A9 also has a higher redline, with the rev-limiter set at 7,200 RPM compared to the D17A1’s 6,600 RPM.
Additionally, the D17A9 is equipped with a VTEC-E valvetrain and an OBD-2 MPFI fuel control system, which provides improved performance compared to the D17A1.
In comparison to the D17A2, the D17A9 has a slightly higher power output, producing 125 PS compared to the D17A2’s 120 PS. The D17A9 also has a higher redline, with the rev-limiter set at 7,200 RPM compared to the D17A2’s 6,800 RPM.
However, the D17A2 has a slightly higher compression ratio of 10.1:1 compared to the D17A9’s 9.9:1, which may provide improved fuel efficiency.
While all three engines belong to the same family, there are several key differences between the D17A1, D17A2, and D17A9.
The choice between the three engines will depend on the specific needs and requirements of the buyer, including desired power output, fuel efficiency, and performance.
Head and Valvetrain Specs D17A9
The Honda D17A9 engine features a SOHC VTEC-E (Single Overhead Camshaft, Variable Valve Timing and Lift Electronic) valvetrain, with four valves per cylinder.
This type of valvetrain provides improved performance compared to traditional SOHC engines by utilizing VTEC technology, which allows for increased valve lift and duration at high RPM.
The VTEC switchover occurs at 2,500 – 3,200 RPM, allowing for a smooth transition from low-lift, low-duration valve operation to high-lift, high-duration valve operation, providing improved power and efficiency.
The D17A9’s valvetrain also features hydraulic lifters, which eliminate the need for frequent adjustments and provide a smooth, maintenance-free operation. This helps to ensure consistent performance and reduces the risk of engine failure due to valvetrain issues.
Overall, the D17A9’s SOHC VTEC-E valvetrain provides improved performance, fuel efficiency, and reliability compared to traditional SOHC engines, making it an excellent choice for those looking for a high-performance engine.
The Technologies Used in
The Honda D17A9 engine features several advanced technologies that help to improve its performance and efficiency.
1. VTEC-E (Variable Valve Timing and Lift Electronic)
This technology allows for increased valve lift and duration at high RPM, providing improved power and efficiency.
The VTEC switchover occurs at 2,500 – 3,200 RPM, allowing for a smooth transition from low-lift, low-duration valve operation to high-lift, high-duration valve operation.
2. OBD-2 MPFI (On-Board Diagnostics 2 Multi-Point Fuel Injection)
This advanced fuel control system provides precise fuel delivery, improving engine performance and fuel efficiency.
The OBD-2 system also helps to reduce emissions by monitoring and controlling the engine’s various functions, including the fuel system, ignition system, and emissions control system.
3. SOHC (Single Overhead Camshaft)
The D17A9 features a single overhead camshaft design, which simplifies the engine’s valvetrain, reduces weight, and improves fuel efficiency compared to DOHC (Double Overhead Camshaft) designs.
4. Four Valves per Cylinder
The D17A9 is equipped with four valves per cylinder, which provides improved airflow and combustion compared to engines with two valves per cylinder. This, in turn, provides improved power and efficiency.
Overall, the advanced technologies used in the Honda D17A9 engine help to provide improved performance, efficiency, and reliability, making it an excellent choice for those looking for a high-performance engine.
Performance Review
The Honda D17A9 engine is a highly efficient and capable powerplant, delivering strong performance and fuel efficiency.
With a displacement of 1,668 cc and a compression ratio of 9.9:1, the D17A9 provides a maximum output of 125 PS (92 kW; 123 hp) at 6,300 RPM and 145 N⋅m (107 lb⋅ft) of torque at 4,800 RPM.
This engine’s redline is set at 6,800 RPM, with a rev-limiter at 7,200 RPM, providing plenty of power and responsiveness.
The VTEC-E technology used in the D17A9 provides a smooth and efficient transition from low-lift, low-duration valve operation to high-lift, high-duration valve operation, allowing for improved power and efficiency at high RPM.
The engine’s OBD-2 MPFI system also helps to provide precise fuel delivery and improved performance.
In terms of fuel efficiency, the D17A9 provides impressive results, thanks in part to its advanced technologies and lightweight design. The engine’s SOHC design and four valves per cylinder help to reduce friction and improve combustion, leading to improved fuel efficiency.
Overall, the Honda D17A9 engine provides excellent performance and fuel efficiency, making it an excellent choice for those looking for a high-performance engine.
Whether you are driving around town or cruising on the highway, this engine is sure to provide a smooth, efficient, and responsive driving experience.
What car did the D17A9 come in?
The Honda D17A9 engine was found in the 2001-2005 Honda Civic Coupe ES in Europe. This engine was designed to provide strong performance and fuel efficiency, making it an excellent choice for those looking for a high-performance engine in their Civic Coupe.
The D17A9’s advanced technologies, including VTEC-E and OBD-2 MPFI, helped to provide improved performance and fuel efficiency, making it a popular choice for those looking for a capable and efficient engine for their Civic.
D17A9 Engine Most Common Problems
The common problems with the D17A9 engine found in the 2002 Honda Civic include
1. Valve Cover Gasket Leak
The valve cover gasket can crack and leak oil onto the hot engine, causing a burning smell.
2. Excessive Oil Consumption:
The engine may consume excessive oil, which can be a sign of worn piston rings or cylinder walls.
3. Engine Misfire:
This can be caused by a variety of issues, including a faulty ignition system, clogged fuel injectors, or a vacuum leak.
4. Engine Overheating:
This can be caused by a failing water pump, clogged radiator, or a damaged head gasket.
5. Engine Stalling:
This can be caused by a faulty throttle body, clogged air filter, or a failing mass air flow sensor.
6. Engine Rattling:
This can be caused by a worn timing chain or tensioner, or a damaged engine mount.
It is recommended to have a mechanic inspect the engine for any of these issues if you are experiencing any of the above symptoms.
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