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Brand: C.OEFT
OE numbers: ASBG-BTYG.CR2-12
Product Name: Timing Chain Kit
Compatible model: /
Product status: New
Number of teeth on the product: /
Product weight: 2.03kg
Packaging size: 40*40*10cm
Product packaging: Neutral Packaging
Car Series: Japanese
Car Type: For Honda Accord 9th Generation CR2
As the "transmission core" of the engine timing system in the 9th Generation Accord CR2, the components of the kit work together to ensure the stable operation of the variable valve timing system:
·Timing Chain: Connects the crankshaft and dual camshafts (the i-VTEC engine is a DOHC double overhead camshaft), strictly maintaining a 1:2 rotation ratio (a core ratio of four-stroke engines). At the same time, it cooperates with the variable valve timing system (VTC) to ensure that the intake and exhaust valves open and close at the precise moment corresponding to piston movement (intake → compression → power → exhaust strokes) — especially when the i-VTEC system switches to high-angle cams, the chain must maintain deviation-free transmission to prevent collision between valves and pistons (such failures can cause valve bending, piston top damage, or even engine scrapping).
·Hydraulic Tensioner: Compensates for the slack of the chain caused by long-term wear in real time, and pushes the guide to fit tightly against the chain through oil pressure, ensuring the chain is always in the optimal tension state and preventing "tooth skipping" (which can lead to timing confusion, resulting in reduced engine power, unstable idling, and surging fuel consumption).
·Guides & Damper: The guides fix the running path of the chain to prevent poor meshing caused by lateral deviation of the chain; the damper absorbs chain vibration to avoid rigid collision between the chain, sprocket, and timing cover, protecting the overall structural stability of the timing system.
2. Adapting to the i-VTEC System to Optimize Engine Performance
·Supporting Variable Valve Timing Switching: The i-VTEC engine of the 9th Generation Accord CR2 achieves a balance between "low-speed fuel efficiency" and "high-speed power" by switching cams of different angles. The timing chain kit must accurately transmit the phase change of the camshaft — the high-strength chain and adaptive tensioner can ensure no transmission delay during the switching process, avoiding power interruption or impact; the low-friction guides reduce energy loss, helping the engine improve fuel economy at low speeds (measured urban fuel consumption reduced by 3%-5%) and release maximum power at high speeds (no loss of the 2.4L engine’s rated power of 186 horsepower).
·Stabilizing High-Speed Operating Conditions: When the engine speed exceeds 5,000 rpm (the activation range of the i-VTEC system), the chain must withstand higher centrifugal force and impact force. The reinforced materials of the kit can ensure stable transmission, avoiding timing errors caused by chain vibration and maintaining the smoothness and power output of the engine at high speeds.
3. Reducing Operating Noise to Improve Driving Comfort
Mute Design Matching Vehicle Positioning: As a Honda mid-size sedan, the 9th Generation Accord focuses on driving quietness. The low-friction guides and high-damping damper of the kit can control the operating noise of the timing system below 55 decibels (at idle), which is much lower than the 65 decibels of ordinary aftermarket kits. This avoids "timing system abnormal noise" affecting the driving experience and matches the original factory mute standards.
·Double Adaptation for Vehicle & Engine: Strictly developed based on the body structure and engine parameters of the Honda Accord 9th Generation CR2, with a specific focus on the timing system design of its 2.4L i-VTEC engine (Model: K24W). The chain pitch (8mm standard i-VTEC timing chain specification), tensioner oil pressure parameters, and guide mounting holes in the kit are 100% matched to original factory data, avoiding issues such as "poor meshing between chain and sprocket" and "mismatched tensioner stroke" that are common with universal kits.
·Precise Model Matching for Plug-and-Play Installation: The kit model ASBG-BTYG.CR2-12 is customized for the CR2 model, requiring no drilling or modification to the engine timing cover or cylinder block. It can directly replace old original parts. Maintenance technicians do not need to adjust component dimensions additionally, and installation efficiency is 40% higher than that of non-specialized kits, reducing the risk of assembly errors.
·OE-Level Quality Benchmark: Key components (e.g., the material composition of the timing chain, the friction coefficient of the guides) are manufactured in accordance with Honda’s Original Equipment (OE) standards and validated through Honda engine bench tests. This ensures consistency in performance and service life with original parts, preventing engine failures caused by differences in component quality.
2. Reinforced Materials & Craftsmanship for High-Load Conditions of i-VTEC Engines
·High-Strength Timing Chain: Forged from chrome-nickel-molybdenum alloy steel, it undergoes three core processes: "cold drawing forming → carburizing and quenching → precision grinding". Its tensile strength reaches 1,450 MPa (25% higher than ordinary timing chains), and surface hardness is HRC 62-64. It can withstand the high rotational speed (up to 6,800 rpm) of the i-VTEC engine and the instantaneous impact force during variable valve timing switching, preventing chain stretching or tooth breakage.
·Adaptive Hydraulic Tensioner: Adopts Honda’s exclusive "two-stage oil pressure buffer" structure, with a built-in pressure sensor that can adjust the tension in real time according to engine load (e.g., idling, acceleration, high-speed cruising) — maintaining low tension at low speeds to reduce wear, and automatically increasing tension at high speeds or during sudden acceleration to prevent tooth skipping. The tensioner housing is made of heat-resistant PA66+GF40 engineering plastic (containing 40% glass fiber), which can withstand the 230℃ high temperature in the engine compartment without the risk of aging or cracking during long-term use.
·Low-Friction Mute Guides & Damper: The guide surface is coated with a nano-level PTFE (polytetrafluoroethylene) coating, reducing the friction coefficient with the chain to 0.07 (35% lower than ordinary guides). This not only extends the guide service life to 200,000 kilometers but also reduces operating noise; the damper adopts a composite structure of high-damping nitrile rubber (NBR) and a metal skeleton, which can absorb 90% of chain vibration at high speeds and avoid abnormal noise caused by "chain knocking on the timing cover".
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