Non-VTEC engines do not have variable valve timing or lift control, and instead use fixed valve timing and lift. This can result in reduced engine efficiency, power, and torque, and higher emissions compared to VTEC engines.
Here is a table summarizing the key differences between VTEC and non-VTEC engines:
| Feature | VTEC | Non-VTEC |
|---|---|---|
| Valve timing | Variable | Fixed |
| Valve lift | Variable | Fixed |
| Engine efficiency | Improved | Reduced |
| Power | Increased | Reduced |
| Torque | Increased | Reduced |
| Emissions | Reduced | Higher |
Overall, VTEC engines are more advanced and efficient than non-VTEC engines, and offer improved performance and emissions.