Don't understand what VTEC is??

VTEC variable valve timing and lift electronic control vtec engines benefit from advanced technology proven by our success in motorsport; technology that has helped make honda the world's largest manufacturer of engines

VTEC is honda's unique engine concept that effectively gives you two engines in one, by varying valve timing and lift according to engine speed and load, for driveability in town and responsive acceleration on the open road.

In general,normally aspirated petrol engines focus on either 'low rpm' or 'high rpm' performance, respectively resulting in either gutless top-end performance, or a loss in the low range output performance.

VTEC engines employ a larger third camshaft lobe, positioned between the primary and secondary lobes, with a third rocker arm bearing. at slower crusing speeds the smallerouter camlobes rotate- ensuring the engine breathes its air/fuel mixture more efficiently, but at higher revs the larger central lobe comes into play, opening the valves wider and longer, allowing a bigger charge of air/fuel to be sucked in.

The result is a dual personality engine, changing the timing and lift of the valves to combine good torque characteristics at low revs with high power at high revs.

In 4-stroke engines, the longer the valves remain open, the longer the inlet/exhaust valves remain open together-resulting in a shortened, higly efficient combustion cycle with higher air/fuel mixture intake mix and volume and more rapid exhaust.

Honda continues to promote a wide range of research and development in the pursuit of engineering excellence. honda's racing activities on both two wheels and four have undoubtedly benefited the customers who enjoy our products.