Car engines work better when they can “breathe” freely.
Otherwise, it’s a bit like if you or I had a blocked-up nose. Performance is a little under par, and there’s no nasal spray especially for cars.
But engineers long ago learned that adding more valves – which allow air to flow in and out of the engine’s cylinders – can have the desired effect.
Back in 1970, the sporty Escort RS1600 became one of the very first modern cars to increase the number of valves per cylinder from two to four.
And this also contributed to improved performance, and better fuel efficiency.
Turn the clock forward 45 years and there’s another exciting new Ford RS on the way – the all-new Ford Focus RS.
Will the technology that this model introduces have such a dramatic impact?
For now, we’ll just have to wait and see…