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Are all Honda Engines true Interference Engines?

No, not all Honda engines are true interference engines. Some Honda engines are designed with a non-interference valvetrain, meaning that if the timing belt or chain fails or breaks, there will be no contact between the pistons and the valves, preventing catastrophic engine damage.

Here are some examples of Honda engines that are known to be non-interference:

1. Honda D15B, D16A, and D17A series SOHC engines

2. Honda B16A and B18C series DOHC VTEC engines

3. Honda K20A, K24A, and K24Z series DOHC i-VTEC engines

4. Honda L15A, L15B, and L18A series SOHC i-VTEC engines

It's important to note that while these engines are designed with a non-interference valvetrain, it's still recommended to replace the timing belt or chain at the specified intervals to prevent engine issues and ensure optimal performance.

However, there are also some Honda engines that are designed as true interference engines. In these engines, a timing belt or chain failure or breakage will result in the pistons hitting the valves, causing severe damage to the engine components and potentially leading to expensive repairs.

Examples of Honda engines that are known to be true interference engines include:

1. Honda F-series engines (F22A, F23A, and F20B)

2. Honda H-series engines (H22A)

3. Honda J-series engines (J30A, J32A, and J35A)

It's crucial to identify the specific Honda engine model in your vehicle to determine whether it's an interference engine or not. This information is usually available in the vehicle's owner's manual or can be obtained from a trusted mechanic or automotive professional.