* Displacement: The Type 3 engine has a displacement of 1.5 liters, while the Type 4 engine has a displacement of 1.7 liters.
* Power: The Type 3 engine produces 53 horsepower, while the Type 4 engine produces 65 horsepower.
* Torque: The Type 3 engine produces 78 lb-ft of torque, while the Type 4 engine produces 89 lb-ft of torque.
* Compression ratio: The Type 3 engine has a compression ratio of 7.3:1, while the Type 4 engine has a compression ratio of 8.5:1.
* Fuel injection: The Type 3 engine uses a single-barrel carburetor, while the Type 4 engine uses a two-barrel carburetor.
* Cooling: The Type 3 engine has a single cooling fan, while the Type 4 engine has two cooling fans.
In general, the Type 4 engine is a more powerful and efficient engine than the Type 3 engine. However, the Type 3 engine is lighter and more compact, making it a better choice for some applications.
