1925 Flint B-40

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Special features

  • Continental six-cylinder motor

Body styles

Body style
Brougham
Coupe
Chassis

Serial number range

7700 to 12476

Specifications

ItemSpecification
EngineContinental engine. Six-cylinder, 50 horsepower at 2,400 r.p.m., bore 3-1/8″, stroke 4-1/4″; L-head type.
CylindersCast en-bloc with upper half of crankcase.
Valves1-1/2″ diameter, 5/16″ lift.
PistonsThree rings, 3/16″ wide, all above piston pin.
Connecting Rods8-1/4″ center to center; material is drop-forged steel; bearing is cast in rod; diameter, 2″; width, 1-3/8″;
CrankshaftFour-bearing; front, 2″ diameter and 1-1/2″ long; both center bearings, 2″ diameter and 1-3/8″ long; rear bearing, 2″ diameter and 2-11/32″ long; all bearings easily accessible.
CamshaftFour-bearing; front bearing, bronze-back babitt; carbon steel, case-hardened and ground.
Engine LubricationForce feed gear type oil pump; camshaft drilled and oil is forced to camshaft bearings through case to main crankshaft bearings and to connecting rod bearings.
Cooling SystemFedders radiator; honeycomb type, 16″ four-blade fan; water capacity of cooling system is 12 quarts.
Timing Gear DriveMorse silent chain; simple adjustment.
CarburetorCarter plain tube carburetor; combination intake and exhaust manifold with hot spot located on left side of motor with carburetor
ClutchSingle plate, dry type enclosed in flywheel; easily adjusted or removed without disturbing engine or transmission.
TransmissionWarner standard selective type; three speeds forward and one reverse, located amidship of car.
Electric SystemAuto-Lite starting motor, generator, coil and distributor; U.S.L. battery, 92 amp. hours.
DriveLeft-hand drive, with spark and throttle levers mounted on steering wheel; ignition and lighting switch mounted on instrument board.
Front AxleAdams; reverse Elliott type, inclined king pins, tapered roller hub bearings.
Rear AxleAdams; semi-floating type; spiral bevel pinion and ring gear; ratio, 4-7/9 to 1.
BrakesLockheed Hydraulic Internal four-wheel brakes; 14″ diameter.
SpringsSemi-floating type; front, 36″ long; rear, 51-1/2″ long; spring bolts, 9/16″ diameter; front, nine leaves; rear, eight leaves; springs are 2″ wide.
TiresFull balloon, size 30 x 5.77.
Chassis LubricationZerk High Pressure (Alemite system may have been used on Canadian cars).
Steering GearRoff-Warner, cam and lever type; ratio 16 to 1; ball thrust bearings with adjustment to take up wear; steering wheel 17″ diameter with corrugated wood rim; horn button mounted on steering wheel.
FramePressed steel and tubing with 5″ channel 5/32″ thick; five cross members and four-point motor suspension on tubular sub-frame.
Gasoline SupplyStewart vacuum feed is used; gasoline tank located at rear of frame and has a capacity of 16 gallons.
Wheelbase115 inches
HeadlampsBarrel type, completely nickeled; equipped with Smith lenses, 8″ diameter.
HornMotor-driven.

Sources: Durant Family Registry, Durant’s Standard, vol. 13 no. 1.

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