about the B series
The B-series Honda DOHC engines are most popular as they have good performers from the factory having models with around 126hp to around 200hp.
about the D series
The smallest of the D-series engines is a 1.2 liter (1,200cc) and the largest is 1.7 liter. Single OverHead Camshaft and Double OverHead Camshaft.
about the K series
The Honda K series engine is a four-cylinder otto cycle engine. It is available in 2.0 L and 2.4 L naturally-aspirated variants, and a 2.3 L turbocharged model.