Mazda RX-7 (1978) fixed-head coupé - technical specifications of 1978 Mazda RX-7

(1978 model)

Brief specs of 1978 Mazda RX-7

2-door 2+2-seater fixed-head coupé, petrol (gasoline) 2-cylinder rotary (Wankel) engine, 2292 cm³ / 139.9 cu in / 139.9 cu in, 78.3 kW / 105.0 hp / 105.0 hp @ 6000 rpm / 6000 rpm / 6000 rpm, 144.0 N·m / 106.2 lb·ft / 106.2 lb·ft @ 4000 rpm / 4000 rpm / 4000 rpm, manual 5-speed transmission, rear wheel drive, 185 km/h / 115 mph / 115 mph top speed

Marque (make)	Mazda	Issued from	1978
Model	RX-7	Issued until
Serie	RX-7	Number made
Model family		Body construction
Model code		Body designation
Manufacturer	Mazda Motor Corp.	Country	JP

Marque (make)

Mazda

Issued from

1978

Model

RX-7

Issued until

Serie

RX-7

Number made

Model family

Body construction

Model code

Body designation

Manufacturer

Mazda Motor Corp.

Country

Base platform		Number of doors	2
Bodywork type	fixed-head coupé	Number of seats	2+2
Bodywork designer		Cargo capacity (volume)
Passenger space (volume)	4160 l / 146.91 cu ft / 146.91 cu ft	Max. cargo capacity (volume)

Base platform

Number of doors

Bodywork type

fixed-head coupé

Number of seats

2+2

Bodywork designer

Cargo capacity (volume)

Passenger space (volume)

4160 l / 146.91 cu ft / 146.91 cu ft

Max. cargo capacity (volume)

Length	4285 mm / 168.7 in / 168.7 in	Total (curb) weight	1024 kg / 2258 lb / 2258 lb
Width	1674 mm / 65.9 in / 65.9 in	Dry weight
Height	1270 mm / 50.0 in / 50.0 in	Load capacity
Wheelbase	2421 mm / 95.3 in / 95.3 in	Gross (max.) weight
Track front	1420 mm / 55.9 in / 55.9 in	Towing weight
Track rear	1400 mm / 55.1 in / 55.1 in	Weight distribution (front)
Ground clearance		Fuel capacity	65 l / 14.3 UK gal / 17.2 US gal
Length/wheelbase ratio	1.77

Length

4285 mm / 168.7 in / 168.7 in

Total (curb) weight

1024 kg / 2258 lb / 2258 lb

Width

1674 mm / 65.9 in / 65.9 in

Dry weight

Height

1270 mm / 50.0 in / 50.0 in

Load capacity

Wheelbase

2421 mm / 95.3 in / 95.3 in

Gross (max.) weight

Track front

1420 mm / 55.9 in / 55.9 in

Towing weight

Track rear

1400 mm / 55.1 in / 55.1 in

Weight distribution (front)

Ground clearance

Fuel capacity

65 l / 14.3 UK gal / 17.2 US gal

Length/wheelbase ratio

1.77

Drag coefficient (Cd, Cx, Cw)	0.36	Frontal area (A)	1.81 m² / 19.5 sq ft / 19.5 sq ft (est.)
Aerodynamic coefficient (Cd×A)	0.65 m² / 7.0 sq ft / 7.0 sq ft (est.)	Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)	16.2 kW / 21.7 hp / 21.7 hp (est.)

Drag coefficient (Cd, Cx, Cw)

0.36

Frontal area (A)

1.81 m² / 19.5 sq ft / 19.5 sq ft (est.)

Aerodynamic coefficient (Cd×A)

0.65 m² / 7.0 sq ft / 7.0 sq ft (est.)

Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

16.2 kW / 21.7 hp / 21.7 hp (est.)

Engine Code		Total number of cylinders	2
Engine Type	rotary (Wankel) (Inline, 2 cylinder (twin))	Total number of valves
Engine Manufacturer	Mazda	Valves per cylinder
Engine construction		Bore
Fuel	petrol (gasoline)	Stroke
Fuel details		Bore/Stroke ratio
Fuel supply	1 Ni carb	Engine displacement	2292 cm³ / 139.9 cu in / 139.9 cu in
Engine Main bearings		Unitary capacity	1146.00 cm³/cylinder / 69.933 cu in/cylinder / 69.933 cu in/cylinder
Cam Design		Compression ratio	9.4 : 1
Sump		Max. output power	78.3 kW / 105.0 hp / 105.0 hp at 6000 rpm / 6000 rpm / 6000 rpm
Aspiration	natural	Max. torque	144.0 N·m / 106.2 lb·ft / 106.2 lb·ft at 4000 rpm / 4000 rpm / 4000 rpm
Compressor type	N/A	Maximum rpm
Intercooler	no	Max. net output (power at the wheels)	45.4 kW / 60.9 hp / 60.9 hp (est.)
Coolant	water	Specific output	34.2 kW/l / 0.751 bhp/cu in / 0.751 bhp/cu in
Catalytic converter	no	Specific torque	62.8 N·m/l / 0.55 lb·ft/cu in / 0.55 lb·ft/cu in

Engine Code

Total number of cylinders

Engine Type

rotary (Wankel) (Inline, 2 cylinder (twin))

Total number of valves

Engine Manufacturer

Mazda

Valves per cylinder

Engine construction

Bore

Fuel

petrol (gasoline)

Stroke

Fuel details

Bore/Stroke ratio

Fuel supply

1 Ni carb

Engine displacement

2292 cm³ / 139.9 cu in / 139.9 cu in

Engine Main bearings

Unitary capacity

1146.00 cm³/cylinder / 69.933 cu in/cylinder / 69.933 cu in/cylinder

Cam Design

Compression ratio

9.4 : 1

Sump

Max. output power

78.3 kW / 105.0 hp / 105.0 hp at 6000 rpm / 6000 rpm / 6000 rpm

Aspiration

natural

Max. torque

144.0 N·m / 106.2 lb·ft / 106.2 lb·ft at 4000 rpm / 4000 rpm / 4000 rpm

Compressor type

N/A

Maximum rpm

Intercooler

Max. net output (power at the wheels)

45.4 kW / 60.9 hp / 60.9 hp (est.)

Coolant

water

Specific output

34.2 kW/l / 0.751 bhp/cu in / 0.751 bhp/cu in

Catalytic converter

Specific torque

62.8 N·m/l / 0.55 lb·ft/cu in / 0.55 lb·ft/cu in

Transmission type	manual	Number of gears	5
Wheel drive	rear wheel drive	Top gear (drive) ratio	0.83
		Final gear (drive) ratio	3.91

Transmission type

manual

Number of gears

Wheel drive

rear wheel drive

Top gear (drive) ratio

0.83

Final gear (drive) ratio

3.91

Acceleration 0-50 mph (80 km/h)		Top (maximal) speed	185 km/h / 115 mph / 115 mph
Acceleration 0-60 mph (97 km/h)	9.50 s / 9.50 s / 9.50 s	Power-to-weight ratio	102.5 kW/ton / 77.7 bhp/ton / 77.7 bhp/ton
Acceleration 0-100 km/h		Fuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)		Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in top		Fuel consumption, Mixed (combined)
Standing ¼mile time		Fuel consumption, Euro
Standing kilometer time		CO₂ emissions
		Range

Acceleration 0-50 mph (80 km/h)

Top (maximal) speed

185 km/h / 115 mph / 115 mph

Acceleration 0-60 mph (97 km/h)

9.50 s / 9.50 s / 9.50 s

Power-to-weight ratio

102.5 kW/ton / 77.7 bhp/ton / 77.7 bhp/ton

Acceleration 0-100 km/h

Fuel consumption, City (urban)

Acceleration 0-100 mph (160 km/h)

Fuel consumption, Road (extra-urban)

Acceleration 80-120 km/h (50-70 mph) in top

Fuel consumption, Mixed (combined)

Standing ¼mile time

Fuel consumption, Euro

Standing kilometer time

CO₂ emissions

Range

Engine location	front	Engine alignment	longitudinal
Steering		Steering details
Turns lock-to-lock		Turning circle	10.0 m / 32.8 ft / 32.8 ft
Suspension front		Suspension rear
Wheels front		Wheels rear
Tyres front	185/70-R13	Tyres rear	185/70-R13
Brakes front	disc	Brakes rear	disc
Brake diameter front		Brake diameter rear
Brakes details		Braked area

Engine location

front

Engine alignment

longitudinal

Steering

Steering details

Turns lock-to-lock

Turning circle

10.0 m / 32.8 ft / 32.8 ft

Suspension front

Suspension rear

Wheels front

Wheels rear

Tyres front

185/70-R13

Tyres rear

185/70-R13

Brakes front

disc

Brakes rear

disc

Brake diameter front

Brake diameter rear

Brakes details

Braked area

Auto Insurance Discounts

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Anti-Theft Discount

Vehicles equipped with an alarm or anti-theft device may save you money on your Comprehensive Coverage.

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