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Mazda rx7

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Mazda RX-7
When was Mazda RX-7 manufactured

The Mazda RX-7 is a front-engine, rear-wheel-drive, rotary engine-powered sports car
that was manufactured and marketed by Mazda from 1978 until 2002.
The engine that Mazda RX-7 uses
The Wankel engine is a type of internal combustion engine using an eccentric rotary design to
convert pressure into rotating motion.
Compared to the reciprocating piston engine, the Wankel engine has more uniform torque;
less vibration; and, for a given power, is more compact and weighs less.
A Wankel engine with its
rotor and geared output
shaft.
Generations of RX-7
The first generation of the RX-7, SA (early) and FB (late), was a two-seater 2 door hatchback coupé. It
featured a 12A carbureted rotary engine as well as the option for a 13B with electronic fuel injection in
later years.

The first generation of the RX-7
is SA
First generation (SA)
Also called
Mazda Savanna RX-7
Production
1978–1985
[1]
471,018 produced
Designer
Matasaburo Maeda (1976)
Body and chassis
Body style
Platform
2-door coupé
Mazda SA22
Powertrain
Engine
•All Wankel rotary1,146 cc
(1.1 L) 12A
•1,146 cc (1.1 L) turbocharged 12A
•1,308 cc (1.3 L) 13B-RESI
Transmission
•4-speed manual
•5-speed manual
•3-speed automatic
•4-speed automatic
Dimensions
Wheelbase
2,420 mm (95.3 in)
Length
4,285 mm (168.7 in)
Width
1,675 mm (65.9 in)
Height
1,260 mm (49.6 in)
Curb weight
1,043–1,134 kg (2,300–2,500 lb)
Generations of RX-7
The second generation of RX-7, known as the FC, was offered as a 2-seater coupé with a 2+2 option available in
some markets, as well as in a convertible bodystyle. This was powered by the 13B rotary engine, offered in
naturally aspirated or turbocharged forms.
Second generation (FC)
Also called
Mazda Savanna RX-7
Production
•1985–1992
•272,027 produced along with Infini
Model and 10th Anniversary
[1]
Edition
Designer
Akio Uchiyama (lead designer)
Body and chassis
Body style
Platform
•2-door coupe
•2-door convertible
Mazda FC
Powertrain
Engine
•1308 cc 13B twin-rotor
•1308 cc 13B-T turbo twin-rotor
Transmission
•5-speed manual
•4-speed automatic
Dimensions
Wheelbase
2,431 mm (95.7 in)
Length
•1986-88: 4,290 mm (168.9 in)
•1989–92: 4,315 mm (169.9 in)
Width
1,689 mm (66.5 in)
Height
1,265 mm (49.8 in)
Curb weight
1,223–1,293 kg (2,696–2,851 lb)
Generations of RX-7
The third generation of the RX-7, known as the FD, was offered a 2+2-seater coupé with a limited
run of a 2-seater option. This featured a sequentially turbocharged 13B REW engine.
Third generation (FD)
Also called
Production
ɛf̃ ini RX-7 (1992–1997)
•1992-1995(North America)
(1992-2002 Japan and RHD
markets)
[1]
•68,589 produced
Model years
1993-1995 (North America)
Designer
•Tom Matano
[15]
•Yoichi Sato (Chief Designer)
•Wu-Huang Chin
[14]
Body and chassis
Body style
2-door coupé
Platform
Mazda FD
Powertrain
Engine
1308 cc 13B-REW twin-turbo twinrotor
Transmission
•5-speed manual
•4-speed automatic
Dimensions
Wheelbase
2,446 mm (96.3 in)
Length
4,285 mm (168.7 in)
Width
1,760 mm (69.3 in)
Height
1,230 mm (48.4 in)
Curb weight
1,218–1,340 kg (2,685–2,954 lb)
Third generation (FD)

The RX-7 (FD) utilised the world's first mass-produced sequentially turbocharged
engine. There are two turbos but they work separately, in steps, rather than
punching more air into the engine together. So the first kicks in from 1,800rpm,
before the second takes over at 4,000rpm. The handover is impressively smooth
and overall, power delivery doesn't feel worlds apart from modern turbocharged
cars.
Information sources

https://www.evo.co.uk/mazda/rx-7

https://www.topgear.com/car-news/retro/six-things-you-never-knewabout-mazda-rx-7

https://www.whichcar.com.au/features/modern-classic-mazda-rx-7
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