* Engine and Transmission Compatibility: Engines and transmissions are designed to work together. The DOHC Neon engine likely has a different bell housing (the part that connects to the transmission) than a SOHC engine. This means the transmission won't physically bolt up to the DOHC engine.
* Clutch System: The clutch system (clutch disc, pressure plate, release bearing) is designed to work specifically with the engine and transmission. A DOHC engine may require a different clutch system than a SOHC engine.
* Control Systems: The DOHC Neon engine may use different sensors, wiring harnesses, and control modules than a SOHC engine. This means it might not be compatible with the car's existing electrical system.
What you can do:
* Find a DOHC Engine with a matching Transmission: Look for a complete engine/transmission setup from a DOHC Neon car. This will ensure compatibility and simplify the swap.
* Adapt the Transmission: It's possible, but challenging, to adapt the existing SOHC transmission to work with the DOHC engine. This would require significant modification to the bell housing and clutch system, and may involve custom fabrication.
* Consult a Mechanic: If you're considering this swap, consult with a qualified mechanic specializing in engine swaps. They can assess the feasibility and provide guidance on the required modifications.
Important Note: Swapping engines is a complex project requiring significant mechanical expertise and specialized tools. It's important to weigh the time, effort, and cost involved before attempting such a project.
