1951 MERCURY
Model Designations:
Series 1CM, offered only with the 112 Horsepower V-8 Engine
SERIES 1CM, WITH V-8 ENGINE
2 Door Sport Coupe, 6 Passenger, Model M-72B
Base Price: $1,947; Shipping Weight: 3,485 Pounds; Production Total: *
2 Door Monterey Coupe, 6 Passenger, Model M-72C
Base Price: $2,116; Shipping Weight: 3,485 Pounds; Production Total: *
2 Door Monterey Coupe, 6 Passenger, Model M-72C**
Basr Price: $2,127; Shipping Weight: 3,485 Pounds: Production Total: *
4 Door Sport Sedan, 6 Passenger, Model M-74
Base Price: $2,000; Shipping Weight: 3,550 Pounds: Production Total: 157,648
2 Door Convertible Coupe, 6 Passenger, Model M-76
Base Price: $2,380; Shipping Weight: 3,760 Pounds; Production Total: 6,759
2 Door Station Wagon, 8 Passenger, Model M-79
Base Price: $2,530; Shipping Weight: 3,800 Pounds; Production Total: 3,812
* Total 1951 Mercury Coupe Production was: 142,168
** Has Vinyl Top
1951 MERCURY
General Specifications
110 Horsepower V-8 Engine
Wheelbase: 118 Inches
Engine Type: L-Head, V-8
Bore & Stroke: 3-3/16" x 4"
Engine Displacement: 255.4 Cu. In.
Compresssion Ratio: 6.80 to 1
Taxable Horsepower: 32.50
Horsepower: 112 @ 3,600 RPM
Maximum Torque: 206 Ft. Lbs. @ 2,000 RPM
Normal Oil Pressure: 57 PSI
Carburetor: Holley Model 885FFC, 2 Barrel .
Tire Size: 7.10 x 15 inches
Tune Up Specifications:
Spark Plug Type: Champion H-10, or Equivalent
Spark Plug: Gap .030;
Point Gap: .015
Firing Order: 1R, 1L, 4R, 4L, 2L, 3R, 3L, 2R or 1-5-4-8-6-3-7-2
Ignition Timing: In Grove on Pulley
Engine Idle Speed:
Manual Transmission: 475 RPM
Automatic Transmission: 440 RPM (In Drive)
Cylinder Head Torque: 65-70 Ft. Lbs
Comprression Pressure @ Cranking Speed: 115 PSI (Minimum)
Valve Specifications:
V-8 Engine
Tappet Clearance, Running Cold: Intake .014; Exhaust .018
Clearance for Timing: Intake: .015
Valve Seat Angle: Intake 45 degrees; Exhaust 45 degrees,
Valve Timing: Intake Opens 5 Degrees Before Dead Center
Exhaust Closes 9 degrees After Top Dead Center
Valve Spring Pressure: 40 Lbs @ 1.89 inches (New Springs)
Valve Stem Clearance: Intake .0015-.003;
Exhaust .002-.004
Piston & Ring Data:
V-8 Engine
Piston Removal: From Above
Fitting Pistons with Spring Scale:
Shim Thickness: .002"
Pounds Pull on Scale: 6 to 12
Ring End Gap (Minimum):
Compression Ring: .007"
Oil Ring: .010
Clearance Between Ring & Grooves:
Compression Ring: .0015-.003
Oil Control Ring: .0015-.003
Wrist Pin Diameter: .7501"-.7504"
Engine Bearing Data:
V-8 Engine
Rod Journal Diameter: 2.1390 Inches
Rod Bearing Clearance: .0005-.003 inches
Rod End Play: .006-.020 inches
Rod Bolt Tension: 45-50 Lbs. Ft.
Main Bearing Journal Diameter: 2.4985"
Main Bearing Clearance: .001 -.0026 inch
Crankshaft End Play: .002-.006 Inch
Main Bolt Tension: 90-105 Lbs. Ft.
Capacities:
V-8 Horsepower Engine
Cooling System:
Without Heater: 22 Quarts
With Heater: 23 Quarts
Fuel Tank: 19-1/2 Gallons;
Engine Oil Refill: 5 Quarts;
Manual Transmission: 3-1/4 Pints
Manual Transmission with Overdrive: 4-1/4 Pints
Automatic Transmission: 9 Quarts
Rear Axle: 3-1/2 Pints
Generator & Regulator Specifications:
Generator #8BA-10000B
Generator Output: 36 Amperes @ 1,700 RPM
Brush Spring Tension: 30 Ounces
Starting Motor Specifications:
Part #7RA-11001
Brush Spring Tension: 48 to 56 Ounces
No Load Test: 70 Amperes, 6 Volts, @ 3,000 RPM
Torque Test: 700 Amperes, 3.5 Volts, 16 Ft. Lb. Torque
Distributor Specifications:
Part #7RA-12127C
Rotation: Clockwise
Cam Angle: 28 Degrees
Breaker Point Gap: .014" to .016"
Condenser Capacity: .21 to .25 Mfds.
Breaker Arm Tension: 17 to 20 Ounces
Vacuum Advance Data:
@ 500 RPM: 1-1/4 to 2-1/4 Degrees & .4" Vacuum
@ 1,200 RPM: 4-1/2 to 5-1/4 Degrees & 1.7" Vacuum
@ 1,600 RPM: 6-1/4 to 7-1/4 Degrees & 2.8 " Vacuum
@ 2,000 RPM: 7-1/2 to 8-1/2 Degrees & 3.7" Vacuum
Holley Carburetor Adjustments:
Idle Mixture: Turn each screw clockwise to lean the mixture and counter-clockwise to enrich the mixture. Initially, turn each screw in until it seats then back out 1 turn.
Idle Speed: Turn the stop screw in to increase speed and out to decrease speed. Use a tachometer, if available.
Choke Adjustment: Set at "Index" Mark
Pump Stroke:
Average Conditions: Center Hole
Hot Weather: Shortest Stroke
Cold Weather: Longest Stroke
Float Level: 1/2: from top of bowl
Fuel Pump Data:
Pump Type: BX
Maximum Pressure: 3-1/2 PSI
Brake Specifications:
Lining Dimensions/Wheel in Inches:
Length, 21
Width, Front Wheel: 2", Rear Wheel: 1-3/4"
Thickness, .212"
Brake Shoe Clearance: .010"
Wheel Cylinder Bore:
Front: 1-1/8"
Rear: 15/16"
Master Cylinder Bore: 1"
Wheel Alignment Specifications:
Caster: - 1/4;
Camber: +3/8;
Toe-In; 3/32" to 5/32"
Toe-Out on Turns:
Outer Wheel: 20 Degrees
Inner Wheel: 23 to 24 Degrees
Kingpin Angle: 5 Degrees @ 3/4 Camber
Beginning Engine & Serial Numbers: Series 1CM: 51DA51DA-10001M; 51LA10,001M; 51ME,10,001M; & 51SL10,001M
Plant Codes: DA=Dearaborn, Michigan
LA=Los Angeles, California
ME=Metuchen
SL=St. Louis, Missouri
W=Wayne, New Jersey
Popular Options:
Radio with Foot Control, Heater, Clock, Power Windows (Standard in Convertible), Power Seat, Seat Covers, Sideview Mirror, Sport Light, Fog Lamps, Locking Gas Cap, Vanity Mirror, White Sidewall Tires, Rear Fender Skirts, Oil Bath Air Cleaner, Overdrive, Automatic Transmission, Two-Tone Paint.
1951 Mercury Historical Data:
Total production of 1951 Mercury's was 310,387.
Paint Colors & Codes:
Color
Black
Banning Blue Poly
Luxor Maroon Poly
Mission Gray
Tomah Ivory
Everglade Green
Sheffield Green
Kerry Blue Poly
Academy Blue
Coventry Green Gray
Vassar Yellow
Monterey Red Poly
Turquoise Blue
Brewster Green Poly
Yosemite Green Poly
Promotional Model Cars Produced:
Metal: 4 Door Sedan