1951 PLYMOUTH

General Specifications

Model Designations:

Plymouth ConcordSix (Short Wheelbase), Series P-22

Plymouth Cambridge Six, Series P-23

Plymouth Cranbrook Six, Series P-23

Concord Six, P-22 Series, 111" Wheelbase

2 Door Sedan, 6 Passenger,

Base Price: $1,673; Shipping Weight: 2,969 Pounds; Production Total: 49,139 *

2 Door Business Coupe, 3 Passenger,

Base Price: $1,573; Shipping Weight: 2,919 Pounds; Production Total: 14,255 *

2 Door Suburban, 5 Passenger

Base Price: $2,064; Shipping Weight: 3,124 Pounds; Production Total: 76,520 *

2 Door Suburban, 5 Passenger, (Savoy Trim)

Base Price: $2,182; Shipping Weight: 3,184 Pounds; Production Total: *

* Suburban production with standard trim and Savoy trim is combined.

Production figures are for model years 1951 & 1952 combined.

Concord Six, P-23 Series, 118-1/2" Wheelbase

4 Door Sedan, 6 Passenger,

Base Price: $1,739; Shipping Weight: 3,104 Pounds: Production Total: 179,417 *

2 Door Club Coupe, 6 Passenger,

Base Price: $1,703; Shipping Weight: 3,059 Pounds; Production Total: 101,784 *

* Combined 1951 & 1952 Production

Cambridge Six, P-23 Series, 118-1/2" Wheelbase

4 Door Sedan, 6 Passenger

Base Price: $1,826; Shipping Weight: 3,109 Pounds: Production Total: 388,735 *

2 Door Club Coupe, 6 Passenger,

Base Price: $1,796; Shipping Weight: 3,074 Pounds; Production Total: 126,725 *

2 Door Hardtop Coupe, (Belvedere) 6 Passenger,

Base Price: $2,114; Shipping Weight: 3,182 Pounds; Production Total: 51,266 *

2 Door Convertible Coupe, 6 Passenger

Base Price: $2,222; Shipping Weight: 3,294; Production Total: 15,650 *

Chasis, Production Total: 4,171 *

* Combined 1951 & 1952 Production

1951 PLYMOUTH

97 Horsepower 6 Cylinder Engine, All Series

Wheelbase:

P-22: 111"

P-23: 118-1/2"

Engine Type: L-Head, Inline 6 Cylinder

Bore & Stroke: 3-1/4" X 4-3/8"

Engine Displacement: 217.8 Cu. In.

Compresssion Ratio: 7.00 to 1

Taxable Horsepower: 25.35

Horsepower: 97 @ 3,600 RPM

Torque: 175 Ft. Lbs @ 1,200 RPM

Normal Oil Pressure: 45 PSI

Rear Axle Ratio:

P-22: 3.73:1 or 3.90:1

P-23: 3.90:1 or 4.10:1

Tire Size:

P-22: 6.40 x 15; Inflation Pressures: 24 Front & Rear

P-23: 6.70 x 15; Inflation Pressures: 24 Front & Rear

Tune Up Specifications

Spark Plug Type: Auto-Lite AR8

Spark Plug: Gap .035;

Point Gap: .020

Ignition Timing: TDC Mark on Vibration Damper

Firing Order: 1-5-3-6-2-4

Engine Idle Speed: 475 RPM

Cylinder Head Torque: 70 Ft Lbs

Compression Pressure @ Cranking Speed: 120 PSI (Minimum)

Valve Specifications

All Series, with 97 Horsepower Engine

Tappet Clearance, Running Hot: Intake .010"; Exhaust .010"

Clearance for Timing: .014"

Valve Seat Angle: 45 degrees

Valve Timing: Intake Opens 12 Degrees Before Top Dead Center

Exhaust Closes 6 degrees After Top Dead Center

Valve Spring Pressure: 40 Lbs @ 1-3/4 inches (New Springs)

Valve Stem Clearance: Intake .002"

Exhaust .004"

Piston & Ring Data

97 Horsepower Engine

Piston Removal: From Above

Fitting Pistons with Spring Scale:

Pounds Pull on Scale: Slight Drag on Bore, but able to fall freely at it's own weight.

Ring End Gap (Minimum):

Compression Ring: .012"

Oil Ring: .012

Clearance in Grooves:

Compression Ring: .002"-.004"

Oil Control Ring: .001-.0025

Wrist Pin Diameter: .8591"-.8593"

Engine Bearing Data

97 Horsepower Engine

Rod Journal Diameter: 2.0615-2.0625 Inches

Rod Bearing Clearance: .0005-.0015 inches

Rod End Play: .006-.011 inches

Rod Bolt Tension: 45-50 Lbs. Ft.

Main Bearing Journal Diameter: 2.499"-2.500"

Main Bearing Clearance: .0005 -.0015 inch

Crankshaft End Play: .003-.007 Inch

Main Bolt Tension: 80-85 Lbs. Ft.

Capacities

All Series, With 97 Horsepower Engine

Cooling System:

Without Heater: 13 Quarts

With Heater: 14 Quarts

Fuel Tank: 17 Gallons;

Engine Oil Refill: 5 Quarts;

Manual Transmission: 2-3/4 Pints

Rear Axle: 3-1/4 Pints

Auto-Lite Distributor Specifications

Part #1AT-4011

Rotation: Clockwise

Cam Angle: 39 Degrees

Breaker Point Opening: .020"

Condenser Capacity: .25 to .28 Mfds.

Breaker Arm Spring Tension: 17 to 20 Ounces

Centrifugal Advance Data:

Advance Starts: 1 Degree @ 450 RPM

Full Advance: 10 Degrees @ 1,425 RPM

Vacuum Advance Data:

Advance Starts: 1 Degree @ 5-1/2" Vacuum

Full Advance: 8 Degrees @ 14" Vacuum

Auto-Lite Starting Motor Specifications

Part #MCH-6201

Rotation: Clockwise

Brush Spring Tension: 42-53 Ounces

No Load Test: 65 Amperes, 5.0 Volts @ 4,300 RPM

Torque Test: 335 Amperes, 2.0 Volts @ 6.0 Ft. Lbs Torque

Auto-Lite Generator & Regulator Specifications

Generator #GGW-6001K

Generator Output: 45 Amperes @ 2,125 RPM

Brush Spring Tension: 35 to 53 Ounces

Field Current @ 5 or 10 Volts: 1.4 to 1.5 Amperes

Regulator #VBE-6001A

Cutout Relay:

Voltage to Close Points: 6.5 Volts

Reverse Current to Open Points: 4 to 6 Amperes

Armature Air Gap: .031"

Voltage Regulator Setting: 7.3 Volts

Current Regulator Setting: 45 Amperes

Current & Voltage Armature Air Gap: .048"

Carter Carburetor Adjustments

Model: BB

Carburetor #D6H1-2

Float Level: 5/64"

Idle Screw Settings: 1/2 to 1-1/2 Turns Open

Pump Adjustment Using Gauge T109-117S: 22

Fast Idle Adjustment: None

Unloader Adjustment: None

Beginning Engine Numbers: All Series: P22-1001

Beginning Serial Numbers: P12 Concord 18126001, Detroit, Michigan

28011001, Los Angeles, California

24042001, Evansville, Indiana

28513001, San Leandro, California

P23 Cambridge 15460001. Detroit, Michigan

26040001, Los Angeles, California

22132001, Evansville, Indiana

26512001, San Leandro, California

P23C Cranbrook 12635001. Detroit, Michigan

25112001, Los Angeles, California

20435001, Evansville, Indiana

25531001, San Leandro, California

Brake Specifications

Lining Dimensions/ Wheel:

Length: Front, 21"; Rear, 18-1/2"

Width, 2",

Thickness, .200"

Brake Shoe Clearance: .006"

Wheel Cylinder Bore:

Front: 1-3/8"

Rear: 1-3/8"

Master Cylinder Bore: 1-3/8"

Wheel Alignment Specifications

Caster: Zero;

Camber: Zero;

Toe In; 0 to 1/16 inches

Toe Out on Turns:

Outer Wheel: 20 degrees

Inner Wheel: 20-1/2 to 22-1/2 degrees

Kingpin Angle: 5 to 6-1/2 Degrees

Popular Options

Radio & Antenna, Rear Seat Speaker, Electric Clock, Heater & Defroster, Heavy Duty Air Cleaner, Wheel Discs, Wheel Trim Rings, White Sidewall Tires, License Plate Frames, Bumper Guards, Bumper Wing Guards, Grille Guards, Chrome Exhaust Extension, Spot Light, Fog Lights, Outside Sunshade, Outside Rear View Mirror, Traffic Light Viewer, Chrome Stone Guards, Vent-T-Shades, Locking Gas Cap, Mud Guard Flaps.

Paint Colors & Codes

Code Color

501 Black

505 Wedgewood Blue 1951

506 New Brunswick Blue

520 Channel Green

521 Shore Green

535 Peru Gray

536 Gaynor Gray

545 Palm Beige

546 Trinidad Brown

547 Malibu Brown

560 Rio Maroon

561 Mexico Red

565 Plymouth Cream

1951 Plymouth Historical Data

1951 Plymouth models were introduced on January 12, 1951.

Total 1951 Plymouth Production was 576,000.

Promotional Models Produced:

Plastic: None

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