Isdera Imperator (1984) fixed-head coupé - technical specifications of 1984 Isdera Imperator

Isdera Imperator

(1984 model)

Brief specs of 1984 Isdera Imperator

2-door 2-seater fixed-head coupé, petrol (gasoline) 8-cylinder 16-valve V engine, SOHC (single overhead camshaft), 5547 cm³ / 338.5 cu in / 338.5 cu in, 205.1 kW / 275.0 hp / 275.0 hp @ 5200 rpm / 5200 rpm / 5200 rpm, 430.0 N·m / 317.2 lb·ft / 317.2 lb·ft @ 3750 rpm / 3750 rpm / 3750 rpm, manual 5-speed transmission, rear wheel drive, 275 km/h / 171 mph / 171 mph top speed

Marque (make)	Isdera	Issued from	1984
Model	Imperator	Issued until
Serie	Imperator	Number made
Model family		Body construction
Model code		Body designation
Manufacturer	Isdera GmbH	Country	DE

Marque (make)

Isdera

Issued from

1984

Model

Imperator

Issued until

Serie

Imperator

Number made

Model family

Body construction

Model code

Body designation

Manufacturer

Isdera GmbH

Country

Base platform		Number of doors	2
Bodywork type	fixed-head coupé	Number of seats	2
Bodywork designer		Cargo capacity (volume)
Passenger space (volume)		Max. cargo capacity (volume)

Base platform

Number of doors

Bodywork type

fixed-head coupé

Number of seats

Bodywork designer

Cargo capacity (volume)

Passenger space (volume)

Max. cargo capacity (volume)

Length	4220 mm / 166.1 in / 166.1 in	Total (curb) weight	1350 kg / 2976 lb / 2976 lb
Width	1835 mm / 72.2 in / 72.2 in	Dry weight
Height	1135 mm / 44.7 in / 44.7 in	Load capacity
Wheelbase	2490 mm / 98.0 in / 98.0 in	Gross (max.) weight
Track front	1480 mm / 58.3 in / 58.3 in	Towing weight
Track rear	1410 mm / 55.5 in / 55.5 in	Weight distribution (front)
Ground clearance	135 mm / 5.3 in / 5.3 in	Fuel capacity	95 l / 20.9 UK gal / 25.1 US gal
Length/wheelbase ratio	1.69

Length

4220 mm / 166.1 in / 166.1 in

Total (curb) weight

1350 kg / 2976 lb / 2976 lb

Width

1835 mm / 72.2 in / 72.2 in

Dry weight

Height

1135 mm / 44.7 in / 44.7 in

Load capacity

Wheelbase

2490 mm / 98.0 in / 98.0 in

Gross (max.) weight

Track front

1480 mm / 58.3 in / 58.3 in

Towing weight

Track rear

1410 mm / 55.5 in / 55.5 in

Weight distribution (front)

Ground clearance

135 mm / 5.3 in / 5.3 in

Fuel capacity

95 l / 20.9 UK gal / 25.1 US gal

Length/wheelbase ratio

1.69

Drag coefficient (Cd, Cx, Cw)		Frontal area (A)	1.77 m² / 19.1 sq ft / 19.1 sq ft (est.)
Aerodynamic coefficient (Cd×A)		Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Drag coefficient (Cd, Cx, Cw)

Frontal area (A)

1.77 m² / 19.1 sq ft / 19.1 sq ft (est.)

Aerodynamic coefficient (Cd×A)

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

Engine Code	MB M117E 56	Total number of cylinders	8
Engine Type	V engine (90.0° vee)	Total number of valves	16
Engine Manufacturer	Mercedes-Benz	Valves per cylinder	2
Engine construction	light alloy head & block	Bore	96.5 mm / 3.80 in / 3.80 in
Fuel	petrol (gasoline)	Stroke	94.8 mm / 3.73 in / 3.73 in
Fuel details		Bore/Stroke ratio	1.02
Fuel supply	Bo KE-Jet. III fuel inj.	Engine displacement	5547 cm³ / 338.5 cu in / 338.5 cu in
Engine Main bearings	5	Unitary capacity	693.38 cm³/cylinder / 42.313 cu in/cylinder / 42.313 cu in/cylinder
Cam Design	SOHC (single overhead camshaft)	Compression ratio	10.0 : 1
Sump		Max. output power	205.1 kW / 275.0 hp / 275.0 hp at 5200 rpm / 5200 rpm / 5200 rpm
Aspiration	natural	Max. torque	430.0 N·m / 317.2 lb·ft / 317.2 lb·ft at 3750 rpm / 3750 rpm / 3750 rpm
Compressor type	N/A	Maximum rpm
Intercooler	no	Max. net output (power at the wheels)	86.3 kW / 115.8 hp / 115.8 hp (est.)
Coolant	water	Specific output	37.0 kW/l / 0.812 bhp/cu in / 0.812 bhp/cu in
Catalytic converter	yes	Specific torque	77.5 N·m/l / 0.68 lb·ft/cu in / 0.68 lb·ft/cu in

Engine Code

MB M117E 56

Total number of cylinders

Engine Type

V engine (90.0° vee)

Total number of valves

Engine Manufacturer

Mercedes-Benz

Valves per cylinder

Engine construction

light alloy head & block

Bore

96.5 mm / 3.80 in / 3.80 in

Fuel

petrol (gasoline)

Stroke

94.8 mm / 3.73 in / 3.73 in

Fuel details

Bore/Stroke ratio

1.02

Fuel supply

Bo KE-Jet. III fuel inj.

Engine displacement

5547 cm³ / 338.5 cu in / 338.5 cu in

Engine Main bearings

Unitary capacity

693.38 cm³/cylinder / 42.313 cu in/cylinder / 42.313 cu in/cylinder

Cam Design

SOHC (single overhead camshaft)

Compression ratio

10.0 : 1

Sump

Max. output power

205.1 kW / 275.0 hp / 275.0 hp at 5200 rpm / 5200 rpm / 5200 rpm

Aspiration

natural

Max. torque

430.0 N·m / 317.2 lb·ft / 317.2 lb·ft at 3750 rpm / 3750 rpm / 3750 rpm

Compressor type

N/A

Maximum rpm

Intercooler

Max. net output (power at the wheels)

86.3 kW / 115.8 hp / 115.8 hp (est.)

Coolant

water

Specific output

37.0 kW/l / 0.812 bhp/cu in / 0.812 bhp/cu in

Catalytic converter

yes

Specific torque

77.5 N·m/l / 0.68 lb·ft/cu in / 0.68 lb·ft/cu in

Transmission type	manual	Number of gears	5
Wheel drive	rear wheel drive	Top gear (drive) ratio	0.7
		Final gear (drive) ratio	3.2

Transmission type

manual

Number of gears

Wheel drive

rear wheel drive

Top gear (drive) ratio

0.7

Final gear (drive) ratio

3.2

Acceleration 0-50 mph (80 km/h)		Top (maximal) speed	275 km/h / 171 mph / 171 mph
Acceleration 0-60 mph (97 km/h)		Power-to-weight ratio	203.7 kW/ton / 154.3 bhp/ton / 154.3 bhp/ton
Acceleration 0-100 km/h	6.10 s / 6.10 s / 6.10 s	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

275 km/h / 171 mph / 171 mph

Acceleration 0-60 mph (97 km/h)

Power-to-weight ratio

203.7 kW/ton / 154.3 bhp/ton / 154.3 bhp/ton

Acceleration 0-100 km/h

6.10 s / 6.10 s / 6.10 s

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	middle	Engine alignment	longitudinal
Steering	rack & pinion PAS	Steering details
Turns lock-to-lock		Turning circle	8.9 m / 29.2 ft / 29.2 ft
Suspension front	Independent, Coil springs	Suspension rear	Independent, Coil springs
Wheels front		Wheels rear
Tyres front	285/40 VR 15	Tyres rear	345/35 VR 15
Brakes front	ventilated disc	Brakes rear	disc
Brake diameter front	282 mm / 11.1 in / 11.1 in	Brake diameter rear	289 mm / 11.4 in / 11.4 in
Brakes details	servo-assisted	Braked area

Engine location

middle

Engine alignment

longitudinal

Steering

rack & pinion PAS

Steering details

Turns lock-to-lock

Turning circle

8.9 m / 29.2 ft / 29.2 ft

Suspension front

Independent, Coil springs

Suspension rear

Independent, Coil springs

Wheels front

Wheels rear

Tyres front

285/40 VR 15

Tyres rear

345/35 VR 15

Brakes front

ventilated disc

Brakes rear

disc

Brake diameter front

282 mm / 11.1 in / 11.1 in

Brake diameter rear

289 mm / 11.4 in / 11.4 in

Brakes details

servo-assisted

Braked area

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