Cars & Bids · 1993 Mazda RX-7 RB25DET Engine Swap · KPdORyyQ

Dyno-Verified 374-hp R33 Skyline Inline-6, RB25 5-Speed Manual Swap

This RX-7’s factory-fitted twin-rotor Wankel rotary engine has been swapped with an RB25DET 2.5-liter turbocharged inline-6 from an R33 Skyline GTST. It boasts a robust power output and an excellent array of modifications that enhance both performance and aesthetics.

Highlights
THIS... is a 1993 Mazda RX-7, finished in black with a black interior.

- This RX-7’s factory-fitted twin-rotor Wankel rotary engine has been swapped with an RB25DET 2.5-liter turbocharged inline-6 from an R33 Skyline GTST. Other notable modifications reported by the ech Elite 2500 ECU, 18-inch Nissan Nismo LMGT4 wheels, a Seibon vented carbon fiber hood with Quik-Latch QL pins, Tein coilovers, a DBW Motorsports tune, and more as detailed below.
- A partial list of notable equipment reported by the mirrors.
- The third-generation RX-7, internally known as the FD, was introduced for the 1993 model year and was notable for its lightweight chassis and rotary engine. The FD RX-7 gained recognition for its balanced handling, sleek design, and performance potential. It remains a sought-after platform among enthusiasts, particularly for modification and motorsport use.
- Power comes from an RB25DET 2.5-liter turbocharged inline-6. According to the dyno sheet pictured in the gallery, this RX-7 produces 374 horsepower and 280 lb-ft of torque at the wheels as a result of its modifications. Output is sent to the rear wheels via a 5-speed manual transmission.

Equipment
A partial list of notable equipment reported by the

- Pop-up headlights
- Power sunroof
- Power windows, door locks, and mirrors

Modifications
Notable modifications reported by the

**Powertrain:**

- RB25DET Engine Swap from an R33 Skyline GTST
- RB25 5-speed manual transmission swap with short-throw shifter kit (from an R33 Skyline GTST)
- DBW Motorsports tune
- Haltech Elite 2500 ECU (Boost CU, wideband, oil pressure and coolant temp sensors)
- APEXi stainless intake manifold
- HKS SQV4 blow-off valve with custom IC piping
- HKS Twin Power ignition system
- Nismo 555cc injectors
- Aftermarket custom exhaust system
- Aeromotive adjustable fuel pressure regulator
- K&N intake
- Koyorad GTST radiator
- Chips Ultimate electric fans/shroud
- Mazda limited-slip differential
- SPEC Stage 1 clutch
- Custom driveshaft
- Cusco oil catch can with braided return lines

**Wheels, Brakes, and Suspension:**

- 18-inch Nissan Nismo LMGT4 wheels
- Aftermarket drilled and slotted rotors
- Tein coilovers
- Polyurethane differential and upper bushings (complete bushing kit included)

**Exterior:**

- Seibon vented carbon fiber hood with Quik-Latch QL pins
- Carbon fiber door handles, shrouds, and mirror plates
- Aftermarket headlights
- Aftermarket clear-framed front sidelights

**Interior:**

- Aftermarket reupholstered seats with diamond stitching
- Carbon fiber and suede trim
- Sparco steering with carbon fiber quick-release adapter
- Haltech IC-7 digital dash display
- Sony head unit
- Pre-wired rear-view camera

Recent Service History
The ership, although no documentation was provided to verify:

- Spark plugs, alternator, and power steering belts replaced, engine oil and filter changed

Specifications
- Year: 1993
- Make: Mazda
- Model: RX-7
- Trim: FD
- Mileage: 10,900 Miles Shown - TMU
- Engine: 2.5L Turbocharged I6
- Transmission: Manual (5-Speed)
- Drivetrain: Rear-wheel drive
- Body style: Coupe
- Exterior: Black
- Interior: Black
- Title status: Clean (GA)
- Fuel: Gasoline
- VIN: JM1FD3315P0209619