Honda Insight IMA VTEC-E Valvetrain
The Honda Integrated Motor Assist system's VTEC-E (variable valve timing and
lift electronic control for economy) valvetrain is a completely new design that
incorporates the following features:
- VTEC free-breathing 4-valve combustion chambers and SOHC design ensure
smooth power delivery and driveability
- Enlarged stratified-charge swirl area improves fuel efficiency
- L-shaped rocker arms use a common shaft for greater engine compactness
- Roller-element cam followers, and offset cylinder bores, help to minimize
engine friction and improve efficiency
- VTEC actuation mechanism is coaxial with the roller-element cam followers
(as in the S2000), which helps to further minimize reciprocating mass and
increase engine compactness