1928 Plymouth 1937 Plymouth Plymouth: The First Decade

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1933 Plymouth PD

Detailed specifications, including tolerances and tune-up data are from [Chrysler 1934a] unless otherwise noted.

Item Reference
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Axle, Front Tubular

King Pin Bushings

Bronze

Upper

47/64" x 1-7/32"

Lower

47/64" x 1-7/32"

Knuckle thrust

Ball - Bottom

Wheel bearings

Taper-roller

Maximum end play

0.003"

Toe in

1/16"

Caster

1° - 3°

Camber

1/4° - 3/4°

Pivot Angle

9°
Axle, Rear Semi-floating

Gear ratio

4.375 to 1

Drive gear

Spiral bevel

Diameter and width

8-3/4" x 1-3/16"

Gear and Pinion backlash

0.006" to 0.010"

Pinion shaft end play

0.0015" to 0.0025"

Differential side gear and pinion backlash

0.017"

Axle shaft diameter outer bearing

1-1/4"
Battery

Ampere hour capacity

84

Cells

3

Plates

13

Voltage

6

Specific Gravity

Charged

1.250

Discharged

1.150
Brake, Hand External Contracting

Location

Rear of transmission

Drum diameter

6"

Lining width

2"

Lining to drum clearance

1/16"
Brake, Service Hydraulic Internal Expanding

Drum Diameter

10"

Shoe width

1-1/2"

Shoe to drum clearance:

Bottom

0.004"

Top

0.010"

Pedal to floor board free play, maximum

1/4" to 3/8"
Camshaft

Bearings

4

Size, diameter and length:

No. 1

2" x 1-3/32"

No. 2

1-31/32" x 3/4"

No. 3

1-15/16" x 3/4"

No. 4

1-1/4" x 1-1/4"

End play

0.003" to 0.005"

End play

0.0015" to 0.0025"
Clutch Single plate

Driven disc diameter

9"

Release bearing

Ball

Release lever to bearing clearance

3/32"

Disc run-out at rim (Maximum)

0.015"

Spring tension

200 lb. to 220 lb. at 1-11/16"

Pedal free play

1-1/8"
Connecting Rod Drop forged I section

Between centers

8-1/16"

Bearings

Steel back babbitt insert

Diameter and length

1-15/16" x 1"

Clearance

0.0075" to 0.0025"

Side play

0.003" to 0.009"

Weight variation limit

1/4 oz.

Alignment limits at pin:

Twist

0.001"

Bend

0.001"
Cooling Pump

Capacity

3 1/4 Gallons
Crankshaft Counterweighted

Bearings

Steel back babbitt insert

Diameter and length

No. 1

2-1/4" x 1-15/64"

No. 2

2-1/4" x 1-1/32"

No. 3

2-1/4" x 2-7/8"

No. 4

2-1/4" x 1-1/32"

Clearance

0.001" to 0.002"

End play

0.003" to 0.007"

Run-out center bearing maximum

0.001"
Cylinders

Maximum taper before reconditioning

0.0015"

Maximum out of round before reconditioning

0.002"

Reconditioning working limits

0.0005"
Engine L-head

Number of cylinders

6

Bore

3-1/8"

Stroke

4-1/8"

Piston displacement

189.8 cu. in.

N.A.C.C. horsepower

23.43

Developed horsepower

70

Firing Order

1-5-3-6-2-4 [Chrysler 1933a 92]

Compression Ratio

5.5 to 1 standard. 6.5 with optional aluminum head. [Chrysler 1975 P-24]

Compression pressure

90 PSI at cranking speed [SK 2002 27]
Frame Pressed steel

Length

158-1/4"

Depth of channel

5"

Flange width

2"

Thickness

7/64"

Cross members

Rigid X
Fuel System Pump

Tank capacity

15 gal.
Generator

Maximum cold charging rate at 20 MPH

18 amp.
Horn

Standard Equipment

Klaxon 31

Horn Type

1364, 1830, 1371, or 1831

Amps @6v

5 to 7.5 [SK 1984 10]

Air Gap (High Note)

0.015 to 0.017" [SK 1984 10]

Air Gap (Low Note)

0.020 to 0.022" [SK 1984 10]
Ignition Full Automatic

Breaker Points

Breaker point gap

0.020"

Cam Angle (Degrees)

36° [Sk 2002 27]

Set points to open before top dead center

Top dead center

Spark plugs

14 mm. metric

Original Plugs

AC S9 [SK 2002 27]

Gap

0.025"
Lubrication, Engine Pressure

Oil capacity

5 quarts

Oil pressure at 30 MPH

30 P.S.I. Minimum
Piston Pins Floating in piston and rod

Diameter and length

55/64" x 2-5/8"

Clearance in piston

Tight thumb push at normal room temperature
Piston RIngs

Number per piston

4

Width

Upper - Compression

1/8" 2 rings

Center - wiper

1/8"

Lower - oil control

5/32"

Gap clearance

Upper - compression

0.005" to 0.010"

Center - wiper

0.007" to 0.015"

Lower - oil control

0.007" to 0.015"

Maximum side clearance in groove

0.003"
Pistons Aluminum T-slot

Length

3-11/16"

Feeler gauge clearance

Head

0.022"

Skirt

Top

0.003" to 0.0035" measured on thrust side of piston.

Botton

0.0015" to 0.002" measured on thrust side of piston.

Weight variation limit

1/4 oz.
Speedometer Data

Tire size

5.25/17

Axle ratio

4.375 to 1

Speedometer gear teeth in transmission

5-16
Springs Semi-elliptic

Front:

Length and width

36" x 1-1/2"

Leaves

7

Rear:

Length and width

53-1/2" x 1-1/2"

Leaves

8
Steering Gear

Steering wheel

17-1/4" three spoke
Worm and worm wheel
Tires 5.25/17

Pressure

Front

32 lbs.

Rear

32 lbs.
Transmission 3 speed

High and intermediate

Constant mesh with sliding clutch

Type of gears

Helical

Second speed gear maximum end play

0.002"

Free wheel drive shaft bearing end play

0.002"
Valves

Inlet

Chrome nickle

Exhaust

Silcrome

Clearance diameter of opening

Inlet

1-5/16"

Exhaust

1-5/16"

Stem diameter

11/32"

Clearance in guide

Inlet

0.001" to 0.003"

Exhaust

0.003" to 0.005"

Seat angle

45°

Lift

5/16"

Tappet clearance

Hot engine

Inlet

0.005"

Exhaust

0.007"

For valve timing

Inlet

0.011"

Exhaust

0.012"

Timing

Inlet opens past top center

6°

Piston travel

0.014"

Inlet closes past bottom center

46°

Duration of inlet

220°

Exhaust opens before bottom center

42°

Exhaust closes past top center

8°

Piston travel

0.025"

Duration of exhaust

230°

Springs

Length, valve closed

1-3/4"

Tension, valve closed

38 to 47 lbs.

Limit of compression

1-7/16"