At Auto Composites, our love for Mazda Rotary engines runs deep. So, when Luke reached out to us via email to request a custom set of firewall blank plugs for his RX7 FC3S, we were thrilled to dive into his project. Having recently acquired the car which had been off the road for years, Luke wasted no time in reviving it.
He began by overhauling the fuel system, installing an E85-compatible pump, a Raceworks regulator, and upgrading to 1600cc injectors. Enhancing the engine's performance, he added a cast FD style intake and an 80mm throttle body to not only improve aesthetics but also to replace the outdated throttle position sensor.
Taking on the task of replacing the old, outdated microtech system and the partial series 4 & series 5 harness, Luke opted for a Fueltech FT450 to manage the 13B turbo, allowing for flex fuel capabilities and a two-step feature. After configuring the inputs and establishing a wifi connection, Luke enlisted the expertise of Race Only in Sydney for remote tuning, resulting in the successful ignition of the cranky Bridgeport engine.
With time taking its toll on the car during its dormant period, Luke ensured the car's safety by fitting new brake rotors, rebuilding calipers, and replacing the brake pads. Additionally, he flushed the clutch master and slave cylinders to prevent any potential issues.
Upgraded the cooling system complete with alloy radiator.
Prepping the car for the Rotary Revival track day, Luke needed to devise a solution to seal the vacant firewall holes left behind after removing the heater and air conditioning cores. The objective was clear: prevent exhaust and fuel fumes emitted from the Tial Wastegate from entering the cockpit.
With this mission accomplished, Luke now has his RX7 FC3S track-ready.
Next one is for the RX3 fans and enthusiasts alike, stay tuned.