1946 MERCURY
Model Designations:
Series 69M, offered only with the 100 Horsepower V-8 Engine
SERIES 69M, WITH V-8 ENGINE
2 Door Sportsman Convertible, 6 Passenger, Model 71
Base Price: $2,209; Shipping Weight: 3,407 Pounds: Production Total: 205
2 Door Sedan, 6 Passenger, Model 70
Base Price: $1,448; Shipping Weight: 3,240 Pounds; Production Total: 13,108
2 Door Sedan Coupe, 6 Passenger, Model 72
Base Price: $1,495; Shipping Weight: 3,190 Pounds; Production Total: 24,163
4 Door Town Sedan, 6 Passenger, Model 73
Base Price: $1,509; Shipping Weight: 3,270 Pounds: Production Total: 40,280
2 Door Convertible Coupe, 6 Passenger, Model 76
Base Price: $1,711; Shipping Weight: 3,340 Pounds; Production Total: 6,044
4 Door Station Wagon, 8 Passenger, Model 79
Base Price: $1,729; Shipping Weight: 3,540 Pounds; Production Total: 2,797
1946 MERCURY
General Specifications
100 Horsepower V-8 Engine:
Wheelbase: 118 Inches
Engine Type: L-Head V-8
Bore & Stroke: 3-3/16" x 3-3/4"
Engine Displacement: 239.0 Cu. In.
Compresssion Ratio: 6.75 to 1
Taxable Horsepower: 32.51
Horsepower: 100 @ 3,800 RPM
Maximum Torque: 180 Ft. Lbs. @ 2,000 RPM
Normal Oil Pressure: 30 PSI .
Carburetor: Holley 94, 2 Barrel
Tire Size: 6.50 x 15 inches; Inflation Pressure, 26 Front, 26 Rear
Tune Up Specifications:
Spark Plug Type: Champion H-10, H-11, 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
Distributor Cam Angle: 36 degrees
Ignition Timing: Mark & Location: 4 degrees BTDC, There are no Timing Marks
Engine Idle Speed: 475 RPM
Tappet Clearance, Cold: Intake .012, Exhaust .014
Cylinder Head Torque: 50-60 Ft. Lbs.
Compression Pressure @ Cranking Speed: 110 RPM (Minimum)
Valve Specifications:
V-8 Engine
Tappet Clearance, Running Cold: Intake .012; Exhaust .014
Clearance for Timing: Intake: .012; Exhaust: .014
Valve Timing: Intake Opens at Top Dead Center
Exhaust Closes 6 degrees After Top Dead Center
Valve Seat Angle: Intake 45 degrees; Exhaust 45 degrees,
Valve Spring Pressure: 37 Lbs @ 2-1/8 inches (New Springs)
Valve Stem Clearance: Intake .0025-.0045;
Exhaust .0025-.0045
Piston & Ring Data:
V-8 Engine
Piston Removal: From Above
Piston Clearance (Minimum):
Top Land Inch .020;
Top of Skirt, Inch: With Steel Pistons, .003"
With Aluminum Pistons, .0025"
Fitting Pistons with Spring Scale:
Shim Thickness: With Steel Pistons, .002"
With Aluminum Pistons, .0025"
Pounds Pull on Scale: 6 to 12
Width of Ring End Gap (Minimum):
Compression Ring: .014
Oil Ring: .014
Clearance Between Ring & Grooves:
Compression Ring: .0015-.003
Oil Control Ring: .0015-.003
Engine Bearing Data:
V-8 Engine
Camshaft End Play: .003
Camshaft Bearing Clearance: .002
Rod Journal Diameter: 2.1390 Inches
Rod Bearing Clearance: .0017-.0038 inches
Rod End Play: .006-.014 inches
Rod Bolt Tension: 40 Lbs. Ft.
Main Bearing Journal Diameter: 2.4990"
Main Bearing Clearance: .000 -.003 inch
Crankshaft End Play: .002-.006 Inch
Main Bolt Tension: 80 Lbs. Ft.
Capacities:
V-8 Horsepower Engine
Cooling System:
Without Heater: 22 Quarts
With Heater: 23 Quarts
Fuel Tank: 17 Gallons;
Engine Oil Refill: 5 Quarts;
Grade of Oil: Above +32F 30;
Above +10F 20W;
Above -10F 10W
Manual Transmission: 2-3/4 Pints
Grade of Oil: Summer 90, Winter 80
Rear Axle: 2-1/2 Pints
Grade of Oil: Summer 140, Winter 90
Generator & Regulator Specifications:
Generator #21A-10000
Generator Output: 30 Amperes @ 1,700 RPM
Brush Spring Tension: 30 Ounces
Regulator Part #8A-10505A
Cutout Relay:
Voltage to Close Points: 6.3 Volts
Reverse Current to Open Points: 0 to 8 Amperes
Armature Air Gap: .017"
Voltage Regulator Setting: 7.3 Volts
Current Regulator Setting: 30 Amperes
Current & Voltage Armature Air Gap: .035"
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 #59A-12127
Cam Angle: 36 Degrees (Total Dwell, both Breakers)
Breaker Point Gap: .014" to .016"
Condenser Capacity: .21 to .25 Mfds
Breaker Arm Spring Tension: 20 tp 24 Ounces
Centrifugal Advance:
Advance Starts: 2 Degrees BTDC
Full Advance: 12 Degrees @ 1,725 RPM
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.
Pump Stroke:
Average Conditions: Center Hole
Hot Weather: Shortest Stroke
Cold Weather: Longest Stroke
Float Level: 1.322" to 1.353"
Fuel Pump Data:
Pump Type: R
Maximum Pressure: 3-1/2 PSI
Dash Gauge Manufacturers:
Gasoline: King-Seeley
Temperature: King-Seeley
Oil Pressure: King-Seeley
Ammeter: King-Seeley
Brake Specifications:
Lining Material: Molded
Lining Dimensions/Wheel in Inches: Length, 24
Width, 1-3/4",
Thickness, 3/16"
Brake Shoe Clearance: .010"
Pedal Free Play: 3/8"
Wheel Cylinder Bore:
Front: 1 to 1-3/8"
Rear: 1 to 1-1/8"
Master Cylinder Bore: 1-1/16"
Wheel Alignment Specifications:
Caster: +6-3/4;
Camber: +5/8;
Toe-In; 1/16 inches;
Toe-Out on Turns:
Outer Wheel: 20 Degrees
Inner Wheel: 23 to 24 Degrees
Kingpin Angle: 8 Degrees
Rear Axle Data:
Ring Gear & Pinion Backlash: .006-.010 inch
Drive Pinion Adjustment: None
Drive Pinion Bearing Adjustment: Nut
Axle Shaft End Play: .000-.015 inch
Beginning Engine & Serial Numbers: Series 69M: 99A-650280
Popular Options:
Radio with Foot Control, Heater, Clock, Seat Covers, Sideview Mirror, Sport Light, Fog Lamps, Locking Gas Cap, Draft Deflectors, Vanity Mirror.
1946 Mercury Historical Data:
Total production of 1946 Mercury's was 86,597.
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