420 SL

Design name:
R 107 E 42
Type:
107.047
Production period:
07.1985 / 11.1985 - 08.1989
Note on production period:
production start-up pre-production series / standard production - end of production

Combustion principle:
four-stroke petrol (with manifold injection; emission control system with closed-loop 3-way catalyst as standard from 09.1986)
Configuration:
front, longitudinal; vertical
Engine type:
M 116 E 42 / 116.964
Number of cylinders / arrangement:
8 / 90° V; light-alloy block
Bore x Stroke:
92.0 x 78.9 mm
Total displacement:
4196 cc (tax classification: 4146 cc)
Compression ratio:
9.0
Rated output:
218 hp / 160 kW (with catalyst 204 hp / 150 kW) at 5200 rpm
Rated torque:
33.0 mkg at 3750 rpm (with catalyst 31.0 mkg at 3600 rpm)
Number of valves / arrangement:
1 intake, 1 exhaust / overhead
Valve operation:
1 overhead camshaft per cylinder bank
Camshaft drive:
double roller chain
Fuel system:
manifold injection, mechanically-electronically controlled (Bosch KE-Jetronic)
Fuel tank: position / capacity:
above the rear axle / 85 l

Frame design:
steel unit body
Front-wheel suspension:
double wishbone
Rear-wheel suspension:
twist-beam axle (semi-trailing arm axle with starting- and braking-torque compensation)
Front springs:
coil springs, supplementary rubber suspension, torsion bar stabiliser
Rear springs:
coil springs, supplementary rubber suspension, torsion bar stabiliser
Shock absorber front/rear:
telescopic shock absorbers
Steering:
recirculating-ball power steering
Brake system (foot brake):
hydraulic dual-circuit brake system with vacuum booster and antilock system; disc brakes front (internally ventilated) and rear
Parking brake (hand brake):
mechanical (foot-operated), acting on rear wheels
Wheels:
light-alloy wheels
Wheel rims:
7 J x 15 H 2
Tires:
205/65 VR 15
Driven wheels:
rear wheels
Drivetrain:
divided cardan shaft

Wheelbase:
2455 mm
Front / rear track:
1465 / 1466 mm
Length:
4390 mm
Width:
1790 mm
Height:
1307 mm (with cabriolet top closed)
Kerb weight:
1600 kg (with hardtop 1640 kg)
by Guideline:
DIN 70020 (ready to drive, including fuel, spare wheel and tool kit)
Gross weight:
2020 kg