Mercedes-Benz W 154 fully streamlined record car, 1939

Mercedes-Benz W 154 fully streamlined record car, 1939
3-liter record car based on the W 154 Grand Prix racing car, used for record runs from a flying start
  • Engine type
    M 154/11
  • Inlet valves
    2 inclined overhead valves per cylinder, actuated via finger followers
  • Ignition sequence
    1-8-5-10-3-7-6-11-2-9-4-12
  • No. of cylinders / arrangement
    12 / 60° V
  • Outlet valves
    2 inclined overhead valves per cylinder, actuated via finger followers
  • Configuration
    Front, longitudinal; vertical
  • Valve operation
    2 overhead camshafts per cylinder bank, gear drive
  • Ignition adjustment
    Automatically
  • Combustion principle
    Four-stroke Otto (with 2 superchargers)
  • Crankshaft
    7-bearing (roller bearings)
  • Bore x Stroke
    67 x 70 mm
  • Fuel system
    1 two-barrel suction carb. with add. slide-valve carburetor / 2 Roots superchargers
  • Total displacement
    2963 cc
  • Spark plugs
    1 per cylinder, Bosch 450 G 4
  • Fuel supply
    Graetzin ZE 450 Mul fuel pump
  • Compression ratio
    7.5
  • Fuel tank capacity
    233 l
  • Maximum / output / rated output
    468 hp at 7800 /min; 454 hp at 7500 /min *
  • Rated torque
    50 mkg at 5000 /min
  • Cooling
    Glycol circulation cooling
  • Maximum revolutions
    8000 /min
  • Lubrication
    Dry sump lubrication via 9 suction and pressure pumps
  • Cylinders
    2 steel blocks per cylinder bank with welded-on cooling-water jackets
  • Oil consumption
    2.7 l
  • Cylinder head
    Not removable, welded together with cylinders
  • Starter
    Inertia starter
  • Generator
    Not fitted
  • Battery
    Not fitted
  • Ignition
    High-voltage magneto ignition
  • Ignition system
    2 Bosch magnetos
  • Hand brake
    Not fitted
  • Foot brake
    Acting on front- and rear wheels
  • Steering
    Worm-and-nut steering
  • Wheels
    Wire-spoke wheels, center mounting
  • Front tires
    6.50 x 19
  • Frame design
    Oval-tube frame with 4 cross members
  • Rear tires
    7.00 x 22
  • Front wheel suspension
    Double wishbone, coil springs, hydraulic shock absorbers
  • Drivetrain
    By cardan shaft to transaxle and rear wheels
  • Rear wheel suspension
    De Dion axle, longitudinal torsion-bar springs, hydraulic shock absorbers
  • Brake system
    Hydraulically actuated dual-circuit brake system
  • Front brakes
    Inside shoe brakes with finned light-alloy drums, 400 mm diameter
  • Rear brakes
    Inside shoe brakes with finned light-alloy drums, 400 mm diameter
  • Transmission
    5-speed manual transmission with differential gear, transversally mounted below rear axle
  • Shifting
    Gate shift with locking system
  • Clutch
    Dry single-disc clutch
  • Transmission type
    Change-speed gear
  • Maximum speed
    app. 400 km/h
  • Wheelbase
    2730 mm
  • Front track
    1475 mm
  • Rear track
    1412 mm
  • Length
    6250 mm
  • Width
    1850 mm
  • Height
    1150 mm
  • Vehicle weight
    981 kg**
  • Comments
    Design: O. Wagner and H. Heess under the direction of Dir. Max Sailer *Standard Oil racing fuel WW: 88.0 % methyl alcohol 8.8 % aceton 4.4 % nitrobenzene 0.8 % sulphuric ether **Weight when ready to be weighed according to formula regulations: 981 kg, minus: 17 kg cooling water 9 kg engine oil 6 kg fender suspension amounts to: 949 kg not including driver Empty weight not including tires: 850 kg
  • Engine weight
    253 kg
  • Seats
    1
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