The FD3S RX-7 still endures in time attack and club racing circles thanks to its sublime weight distribution and powerful, compact rotary engine. Those who aren’t keen on the turbocharged 13B-REW, an engine we’ve learned how to tune recently, there are options. Many Americans opt for the Chevy LSX, but in Australia, the 20B is not an uncommon swap. With three rotors displacing 2.0 liters, this motor came in both turbocharged and atmospheric versions, the latter being a huge success in several racing categories. With plenty of torque and a silky power delivery, this 20B chucks the nimble Mazda out of corners with a precision not often seen with the quickest time attack machines.
That is usually due to the fact that the chart-toppers at events like the World Time Attack Challenge rely on big turbos for their induction, and the delivery of a turbocharger, no matter how refined, will never be as manageable as a finely-tuned, high-revving atmospheric engine like this. When matched with a sequential gearbox, that engine becomes a real weapon. That progressive torque curve helps Andy Duffin apply the throttle early and without any hysterics – just a smooth, steady surge forwards.
With immense grip offered by the rear wing, diffuser and splitter, Duffin has no problem braking late and carrying entry speed. He coaxes the rear into the most minute slides on entry and mid-corner, but once the throttle is applied, the car hooks up and sprints towards the end of the next straight at an alarming pace. Even without the help of a turbo to rocket through Sydney Motorsport Park, this nimble, incisive machine manages to stun with its sublime cornering capabilities. It’s been said that the FD3S is the best handling machine to ever emerge from Japan, and this screaming example proves that saying correct.