The Dick Pong Page

Technical Specifications of new RX-8
by Dick Pong
January 13, 2003
 

Go to our forums to discuss this article


The Mazda RX-8 is a high performance, low cost four-door sports car that offers space for four adults. The RX-8’s lightweight, 50/50 weight distribution, small yaw-inertia and low center of gravity provide superb handling.


New Mazda RX-8
Click to enlarge

The front-mid engine/rear wheel drive layout is enhanced by RENESIS, the new naturally aspirated rotary engine. A rotary engine has a higher power to weight ratio than an equivalent piston engine. Reliability is improved since there are only three moving parts.

The RENESIS has a smaller size, lighter weight, lower fuel consumption and generates less heat compare to Mazda’s previous turbo rotary engine. The engine is mounted 2.4-inch further rearward and 1.6-inch lower than in the RX-7. All the main masses – engine, six speed manual transmission and fuel tank – are located within the wheelbase, which is ideal for quick steering response.


Double-wishbone aluminum rear suspension
Click to enlarge

High Power model Power: 247 hp Torque: 159 lb-ft Weight: 2930 lb. 0-60mph in 6s Price: US$27,200

Double-wishbone aluminum front suspension, five-link steel rear suspension and gas-filled monotube dampers give optimum control of roll-center height, body roll and tire camber. Precise suspension geometry depends upon a rigid platform. The RX-8 chassis has higher torsional and bending stiffness than the RX-7 due to floor pan reinforcements and shock-tower braces. A steel frame locks the entire powertrain into a single, rigid unit.


Chassis is stiffer than its predecessor, the RX-7.
Click to enlarge

The result is reduced driveline windup, faster response and better gear shifting. Electrically assisted rack-and-pinion steering automatically reduces kickback over bumps. The RX-8 achieves excellent roadholding without sacrificing ride quality. Active safety features include limited slip differential, tire pressure monitoring system, 4-wheel ABS, EBD (Electronic Brake-force Distribution), traction control and DSC (Dynamic Stability Control). Large brake rotors, high-grip tires and low weight/CG give superior braking. 62mph-0 in 118 ft. Brake rotors: front - 12.7 in. rear - 11.9 in. Wheels (f/r): 18 in. Tires (f/r): 225/45ZR18 Bridgestone Potenza.


1308cc two-rotor rotary engine
Click to enlarge

RENESIS, the smooth 1308cc two-rotor rotary engine features both intake and exhaust ports in the side housings. This configuration permits larger port area, which increases power significantly.

Zero overlap between intake and exhaust ports allows the RENESIS to utilize a lean air/fuel mixture, while unburned fuel is retained for combustion in the next cycle. A high compression ratio and delayed exhaust port timing improve thermal efficiency. The 3-stage induction system features variable intake paths, such that a long route is used for low rpm and a short route at high rpm. A flat torque curve and lightweight rotors produce fast acceleration.


1308cc two-rotor rotary engine
Click to enlarge

Ultra-fine fuel injectors are used to improve fuel atomization. Small, high power coils provide a more powerful spark for enhanced ignition. As a result, complete combustion is ensured across the engine’s entire speed range. An advanced engine management system and drive-by-wire electronic throttle provide more precise control than conventional systems.

The wet-sump lubrication system’s shallow oil pan helps to lower center of gravity. New catalytic converter, double-wall exhaust manifold and the absence of a turbo contribute to cleaner emissions.

Comments can be sent to the author at feedback@autoracing1.com.

 

Author

 
Other's by Dick

Mazda RX-8 poster

Ford GTB Poster

CART Mustang Pace Car poster

2003 Toyota Atlantic Poster

2003 CART Poster

Convert this page to
another language

e-mail us:
contacts@autoracing1.com

Back to the top

AutoRacing1 is an independent internet online publication and is not affiliated with, sponsored by, or endorsed by CART Inc., NASCAR, FIA,  FedEx, Winston, or any other series sponsor. This material may not be published, broadcast, or redistributed without permission.
User agreement & disclaimer

Copyright 1999 - 2003, AutoRacing1, Hamilton, NJ

 

lor="#000000">

Author

  Other's by Dick

Mazda RX-8 poster

Ford GTB Poster

CART Mustang Pace Car poster

2003 Toyota Atlantic Poster

2003 CART Poster

Convert this page to
another language

e-mail us:
contacts@autoracing1.com

Back to the top

AutoRacing1 is an independent internet online publication and is not affiliated with, sponsored by, or endorsed by CART Inc., NASCAR, FIA,  FedEx, Winston, or any other series sponsor. This material may not be published, broadcast, or redistributed without permission.
User agreement & disclaimer

Copyright 1999 - 2003, AutoRacing1, Hamilton, NJ