Here are the key reasons why a 1987 Prelude motor may not fit in a 1988 Prelude:
1. Different Engine Configuration: The 1987 Honda Prelude 2.0 Si came with a carburetor engine, while the 1988 Prelude introduced fuel injection. The fuel injection system in the 1988 model requires different components and sensors, which may not be compatible with the 1987 engine.
2. Electrical Differences: The 1988 Prelude采用了不同的电气系统，包括电子点火，燃料喷射和其他电子组件与1987年的Prelude中的那些。1987发动机中的接线和组件可能与1988模型中的那些不兼容。
3. Engine Mounts and Brackets: The engine mounts and brackets may differ between the 1987 and 1988 Preludes. The location of engine mounts and other attachment points may not match, making it difficult to mount the 1987 engine securely in the 1988 chassis.
4. Transmission Compatibility: The 1987 and 1988 Preludes may have different transmission configurations, such as manual or automatic, as well as different gear ratios. The 1987 engine may not be directly compatible with the transmission in the 1988 Prelude, requiring modifications or swapping the transmission as well.
5. Emission Standards: The 1988 Prelude had to comply with stricter emission standards compared to the 1987 model. The发动机管理系统(EMS) and emission control systems in the 1988 Prelude may not be compatible with the 1987 carburetor-based engine.
While it's theoretically possible to make significant modifications and customizations to fit the 1987 engine into the 1988 Prelude, it would be a complex and time-consuming task that may require extensive custom fabrication and rewiring. It is generally not recommended unless you have significant mechanical expertise and resources available.
