Mazda RX-7 on-board | WTAC

In Circuit, Video by fullboost

Jason Dorrington’s time attack RX-7 cutting a lap at last year’s World Time Attack Challenge practice day at Sydney Motorsport Park. The car was suffering from a little electrical noise during the early session which was later rectified.

Power comes from a Maztech 13B bridge port rotary engine that generates over 500hp to the rear wheels, coupled to a TTI 6-speed sequential gearbox, AP Racing brakes and Ohlins suspension.

Mazda FD RX-7
Maztech 13B bridge port rotary engine
Garrett GT4094R turbocharger
PWR custom oil, radiator, fuel and top mount intercooler
Aftermarket Industries fuel tank with in-built Walbro pumps, Turbosmart regulator
MicroTech LT16 ECU, dash logger, X4, EGT’s, eBoost controller
TTI 6-speed sequential gearbox, Kaaz 1.5 way LSD, 4.1 or 4.77 ratio diff depending on circuit
AP Racing 6-piston front brakes
Ohlins external canister dampeners, Racing Beat sway bars by Centreline Suspension
Works 18×10.5 wheels, Yokohama 050 295mm semi slicks
Topstage Composites custom carbon V3 widebody kit, carbon doors, front and rear guards, bonnet, hatch, V3 wing , front and rear V3 diffusers.
Race weight 1050kg / 2320Ib with 50L of fuel
Power: 370kW / 496hp @ wheels on 19psi boost
430kW / 576hp @ wheels on 25psi boost