1974 MERCURY COMET
Model Designations:
Mercury Comet, 6 & 8 Cylinder
Mercury Comet, 6 & 8 Cylinder, Body Styles:
2 Door Sedan, 6 Passenger, Body # 31
Factory Price: $2,432; Shipping Weight: 2,813 Pounds
Production Total: 64,751*
4 Door Sedan, 6 Passenger, Body # 30
Factory Price: $2,489; Shipping Weight: 2,904 Pounds
Production Total: 60,944*
* 6 & 8 Cylinder Production is combined.
Chassis:
Wheelbase:
2 Doors: 103"
4 Doors: 109"
Tire Sizes: 6:45 X 14"
Engine Availability by Model:
I-6 200 Cubic Inches 84 H.P. Standard Engine
I-6 250 Cubic Inches 91 H.P. Optional Engine
V-8 302 Cubic Inches 140 H.P. Optional Engine
General Engine Specifications:
6 Cylinder, 200 Cubic Inch, 84 H.P. Engine:
Engine Type: Overhead Valve, Inline 6
Bore & Stroke: 3.68" x 3.13"
Engine Displacement: 200 Cu. In.
Compression Ratio: 8.00:1
Taxable Horsepower: 32.50
Horsepower: 84 @ 3,800 RPM
Torque: 150 Ft. Lbs @ 1,800 RPM
Normal Oil Pressure: 30-50 PSI
Carburetor: 1 Barrel
6 Cylinder, 250 Cubic Inch, 91 H.P. Engine:
Engine Type: Overhead Valve, Inline 6
Bore & Stroke: 3.68" x 3.91"
Engine Displacement: 250 Cu. In.
Compression Ratio: 8.0:1
Taxable Horsepower: 32.50
Horsepower: 91 @ 3,200 RPM
Torque: 190 Ft. Lbs @ 1,600 RPM
Normal Oil Pressure: 40-60 PSI
Carburetor: 1 Barrel
8 Cylinder, 302 Cubic Inch Engine, 140 H.P. :
Engine Type: Overhead Valve, V-8
Bore & Stroke: 4.00" x 3.00"
Engine Displacement: 302 Cu. In.
Compression Ratio: 8.00:1
Taxable Horsepower: 51.20
Horsepower: 140 @ 3,800 RPM
Torque: 230 Ft. Lbs @ 2,600 RPM
Normal Oil Pressure: 40-60 PSI
Carburetor: 2 Barrel
Tune Up Specifications - All Series:
6 Cylinder 200 Cubic Inch Engine, Point Ignition:
Spark Plug Type: Autolite BRF-82
Spark Plug: Gap .034"
Point Gap: .025"
Distributor Cam Angle: 33 Degrees
Firing Order: 1-5-3-6-2-4
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 750 RPM
Automatic Transmission: 550 RPM in Drive
6 Cylinder 200 Cubic Inch Engine, Breakerless Ignition:
Spark Plug Type: Autolite BRF-82
Spark Plug: Gap .034"
Firing Order: 1-5-3-6-2-4
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 750 RPM
Automatic Transmission: 550 RPM in Drive
6 Cylinder 250 Cubic Inch Engine, Point Ignition:
Spark Plug Type: Autolite BRF-82
Spark Plug: Gap .034"
Point Gap: .025"
Distributor Cam Angle: 33 Degrees
Firing Order: 1-5-3-6-2-4
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 600 RPM
Automatic Transmission: 600 RPM in Drive
6 Cylinder 250 Cubic Inch Engine, Breakerless Ignition:
Spark Plug Type: Autolite BRF-82
Spark Plug: Gap .034"
Firing Order: 1-5-3-6-2-4
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 600 RPM
Automatic Transmission: 600 RPM in Drive
8 Cylinder 302 Cubic Inch Engine, Point Ignition:
Spark Plug Type: Autolite BRF-42
Spark Plug: Gap .034"
Point Gap: .017"
Distributor Cam Angle: 26-30 Degrees
Firing Order: 1-5-4-2-6-3-7-8
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 850 RPM
Automatic Transmission: 575 RPM in Drive
Idle C0%:
Automatic Transmission: 0.5%
8 Cylinder 302 Cubic Inch Engine, Breakerless Ignition:
Spark Plug Type: Autolite BRF-42
Spark Plug: Gap .034"
Firing Order: 1-5-4-2-6-3-7-8
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 850 RPM
Automatic Transmission: 575 RPM in Drive
Idle C0%:
Automatic Transmission: 0.5%
Valve Specifications:
6 Cylinder Engines, 200 Cubic Inch:
Valve Lash:
Intake: .079"-.129"
Exhaust: .079"-.129"
Valve Angles:
Seat: 45 Degrees
Face: 44 Degrees
Valve Spring Height, Installed: 1-37/64"
Valve Spring Pressure: 146 Lbs @ 1.20"
Valve Stem Clearance:
Intake .0008"-.0025"
Exhaust .001"-.0027"
Valve Stem Diameter:
Intake: .3100"-.3107"
Exhaust: .3098"-.3105"
6 Cylinder Engines, 250 Cubic Inch:
Valve Lash:
Intake: .095"-.145"
Exhaust: .095"-.145"
Valve Angles:
Seat: 45 Degrees
Face: 44 Degrees
Valve Spring Height, Installed: 1-37/64"
Valve Spring Pressure: 146 Lbs @ 1.20"
Valve Stem Clearance:
Intake .0008"-.0025"
Exhaust .001"-.0027"
Valve Stem Diameter:
Intake: .3100"-.3107"
Exhaust: .3098"-.3105"
8 Cylinder 302 Cubic Inch Engine:
Valve Lash:
Intake: .090"-.140"
Exhaust: .090"-.140"
Valve Angles:
Seat: 45 Degrees
Face: 44 Degrees
Valve Spring Height, Installed:
Intake: 1-11/16"
Exhaust: 1-9/16"
Valve Spring Pressure:
Intake: 200 Lbs @ 1.31"
Exhaust: 200 Lbs. @ 1.22"
Valve Stem Clearance:
Intake .001"-.0027"
Exhaust .0015"-.0032"
Valve Stem Diameter:
Intake: .3416"-.3423"
Exhaust: .3411"-.3418"
Piston, Rings, Pins, Crankshaft & Bearing Data:
6 Cylinder, 200 Cubic Inch Engines:
Piston Clearance: .0013"-.0021"
Ring End Gap:
Compression: .008"
Oil: .015"
Wrist Pin Diameter: .912"
Rod Bearings:
Shaft Diameter: 2.1232"-2.1240"
Bearing Clearance: .0008"-.0024"
Main Bearings:
Shaft Diameter: 2.2482"-2.2490"
Bearing Clearance: .0007"-.0026"
Thrust on Bearing: #5
Crankshaft End Play: .004"-.008"
6 Cylinder, 250 Cubic Inch Engines:
Piston Clearance: .0013"-.0021"
Ring End Gap:
Compression: .008"
Oil: .015"
Wrist Pin Diameter: .912"
Rod Bearings:
Shaft Diameter: 2.1232"-2.1240"
Bearing Clearance: .0008"-.0024"
Main Bearings:
Shaft Diameter: 2.3982"-2.3990"
Bearing Clearance: .0005"-.0022"
Thrust on Bearing: #5
Crankshaft End Play: .004"-.008"
8 Cylinder, 302 Cubic Inch Engine:
Piston Clearance: .0018"-.0026"
Ring End Gap:
Compression: .010"
Oil: .015"
Wrist Pin Diameter: .912"
Rod Bearings:
Shaft Diameter: 2.1228"-2.1236"
Bearing Clearance: .0008"-.0026"
Main Bearings:
Shaft Diameter: 2.2482"-2.2490"
Bearing Clearance:
#1: .0001"-.0020"
#2, 3, 4, 5: .0005"-.0024"
#6: .0009"-.0026"
Thrust on Bearing #3
Crankshaft End Play: .004"-.008"
Engine Tightening Specifications:
6 Cylinder Engines, 200 & 250 Cubic Inch:
Spark Plugs: 15-20 Ft. Lbs.
Cylinder Head Bolts: 70-75 Ft. Lbs.
Exhaust Manifold: 13-18 Ft. Lbs.
Rocker Arm Shaft Bracket: 30-35 Ft. Lbs.
Rocker Arm Cover: 3-5 Ft. Lbs.
Connecting Rod Cap Bolts: 21-26 Ft. Lbs.
Main Bearing Cap Bolts: 60-70 Ft. Lbs.
Flywheel to Crankshaft: 75-85 Ft. Lbs.
Vibration Damper or Pulley: 85-100 Ft. Lbs.
8 Cylinder 302 Cubic Inch Engines:
Spark Plugs: 15-20 Ft. Lbs.
Cylinder Head Bolts: 65-72 Ft. Lbs.
Intake Manifold: 19-27 Ft. Lbs.
Exhaust Manifold: 12-16 Ft. Lbs.
Rocker Arm Studs: 17-23 Ft. Lbs.
Rocker Arm Cover: 3-5 Ft. Lbs.
Connecting Rod Cap Bolts: 19-24 Ft. Lbs.
Main Bearing Cap Bolts: 60-70 Ft. Lbs.
Flywheel to Crankshaft: 75-85 Ft. Lbs.
Vibration Damper or Pulley: 70-90 Ft. Lbs.
Capacities-All Series:
6 Cylinder 200 Cubic Inch Engine:
Cooling System:
Without Heater: 8 Quarts
With Heater: 9 Quarts
With Air Conditioning: 9 Quarts
Radiator Cap Pressure:
With Air Conditioning: 12-16 PSI
Without Air Conditioning: 12-16 PSI
Thermostat Opening: 191 Degrees
Fuel Tank: 15 Gallons
Engine Oil Refill: 5 Quarts*
Manual Transmission:
Three Speed: 3-1/2 Pints
Automatic Transmission: 8 Quarts
Rear Axle: 4 Pints
* With New Oil Filter
6 Cylinder 250 Cubic Inch Engine:
Cooling System:
Without Heater: 8.7 Quarts
With Heater: 9-1/2 Quarts
With Air Conditioning: 9-1/2 Quarts
Radiator Cap Pressure:
With Air Conditioning: 12-16 PSI
Without Air Conditioning: 12-16 PSI
Thermostat Opening: 191 Degrees
Fuel Tank: 15 Gallons
Engine Oil Refill: 5 Quarts*
Manual Transmission:
Three Speed: 3-1/2 Pints
Automatic Transmission: 9 Quarts
Rear Axle: 4 Pints
* With New Oil Filter
8 Cylinder 302 Cubic Inch Engine:
Cooling System:
Without Heater: 12.4 Quarts
With Heater: 13-1/2 Quarts
With Air Conditioning: 14-1/4 Quarts
Radiator Cap Pressure:
With Air Conditioning: 12-16 PSI
Without Air Conditioning: 12-16 PSI
Thermostat Opening: 191 Degrees
Fuel Tank: 15 Gallons
Engine Oil Refill: 5 Quarts*
Manual Transmission:
Three Speed: 3-1/2 Pints
Automatic Transmission: 9 Quarts
Rear Axle: 4 Pints
* With New Oil Filter
Starting Motor Specifications:
6 Cylinder 200 Cubic Inch Engines:
Part #D2ZF-BA, CA
Brush Spring Tension: 80 Ounces
No Load Test: 90 Amperes, 12 Volts
Torque Test: 670 Amperes, 5.0 Volts, @ 15-1/2 Ft. Lbs.
Part #D2OF- AA, BA
Brush Spring Tension: 80 Ounces
No Load Test: 90 Amperes, 12 Volts
Torque Test: 670 Amperes, 5.0 Volts, @ 15-1/2 Ft. Lbs.
6 Cylinder 250 Cubic Inch Engines:
Part #D2AF-CA
Brush Spring Tension: 80 Ounces
No Load Test: 90 Amperes, 12 Volts
Torque Test: 670 Amperes, 5.0 Volts, @ 15-1/2 Ft. Lbs.
302 Cubic Inch 8 Cylinder Engines:
Part #D2AF-CA
Brush Spring Tension: 80 Ounces
No Load Test: 90 Amperes, 12 Volts
Torque Test: 670 Amperes, 5.0 Volts, @ 15-1/2 Ft. Lbs.
Part #D4AF-AA, BA
Brush Spring Tension: 80 Ounces
No Load Test: 90 Amperes, 12 Volts
Torque Test: 670 Amperes, 5.0 Volts, @ 15-1/2 Ft. Lbs.
Part #D5TF-DA
Brush Spring Tension: 80 Ounces
No Load Test: 90 Amperes, 12 Volts
Torque Test: 670 Amperes, 5.0 Volts, @ 15-1/2 Ft. Lbs.
Ford Alternator Specifications:
Note: Not all alternators shown are available on the Comet.
Purple, 38 Ampere Alternator:
Current Rating: 38 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator #D4TZ-A
Orange, 42 Ampere Alternator:
Current Rating: 42 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator #D4TZ-A
Red, 55 Ampere Alternator:
Current Rating: 55 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator #D4TZ-A
Green, 61 Ampere Alternator:
Current Rating: 61 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator #D4TZ-A
70 Ampere Alternator:
Current Rating: 70 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator #D4TZ-A
90 Ampere Alternator:
Current Rating: 90 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator #D4TZ-A
Distributor Specifications:
Note: Not distributors shown are available on the Comet
Part #D3AF-AA
Centrifugal Advance:
Advance Starts: 0 to 1-1/2 Degree @ 500 RPM
Intermediate Advance: 4 to 6 Degrees @ 750 RPM
Intermediate Advance: 6 to 8-1/4 Degrees @ 1,000 RPM
Intermediate Advance: 10 to 12-1/2 Degrees @ 1,500 RPM
Full Advance: 16-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 13-1/2 Degrees @ 20" Vacuum
Part #D3BF-DA
Centrifugal Advance:
Advance Starts: 0 to 1-1/4 Degree @ 500 RPM
Intermediate Advance: 2-1/2 to 4-1/2 Degrees @ 750 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 8-1/2 to 10-1/2 Degrees @ 1,500 RPM
Full Advance: 12 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 11-1/4 Degrees @ 20" Vacuum
Maximum Retard: 5 to 7 Degrees @ 20" Vacuum
Part #D3DF-FA
Centrifugal Advance:
Advance Starts: 0 to1-1/2 Degree @ 500 RPM
Intermediate Advance: 1-1/2 to 3-1/2 Degrees @ 750 RPM
Intermediate Advance: 4-1/2 to 6-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 6-1/2 to 9 Degrees @ 1,500 RPM
Full Advance: 9-1/4 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 9-1/4 Degrees @ 20" Vacuum
Maximum Retard: 2 to 4 Degrees @ 20" Vacuum
Part #D3DF-HA
Centrifugal Advance:
Advance Starts: 0 to 1-1/2 Degree @ 500 RPM
Intermediate Advance: 3-1/2 to 5-1/2 Degrees @ 750 RPM
Intermediate Advance: 7-1/2 to 9-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 9-1/2 to 11-1/2 Degrees @ 1,500 RPM
Full Advance: 11-1/4 Degrees @ 2,200 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 7-1/4 Degrees @ 20" Vacuum
Part #D3DF-KA
Centrifugal Advance:
Advance Starts: 0 to 1-1/2 Degrees @ 500 RPM
Intermediate Advance: 4-1/2 to 6-1/2 Degrees @ 750 RPM
Intermediate Advance: 7-1/2 to 9-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 8-1/2 to 11 Degrees @ 1,500 RPM
Full Advance: 11-1/4 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 7-1/4 Degrees @ 20" Vacuum
Maximum Retard: 2 to 4 Degrees @ 20" Vacuum
Part #D3OF-FA
Centrifugal Advance:
Advance Starts: 0 to 1 Degree @ 500 RPM
Intermediate Advance: 0 to 1-1/2 Degrees @ 750 RPM
Intermediate Advance: 1 to 3 Degrees @ 1,000 RPM
Intermediate Advance: 5-1/2 to 8-1/2 Degrees @ 1,500 RPM
Full Advance: 13 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 5-1/4 Degrees @ 20" Vacuum
Maximum Retard: 5 to 7 Degrees @ 20" Vacuum
Part #D3OF-GA
Centrifugal Advance:
Advance Starts: 0 to1 Degree @ 500 RPM
Intermediate Advance: 0 to 1-1/2 Degrees @ 750 RPM
Intermediate Advance: 1 to 3-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 6-1/2 to 8-1/2 Degrees @ 1,500 RPM
Full Advance: 13-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 5-1/4 Degrees @ 20" Vacuum
Part #D3OF-HB
Centrifugal Advance:
Advance Starts: 0 to1-1/2 Degree @ 500 RPM
Intermediate Advance: 1/2 to 3 Degrees @ 750 RPM
Intermediate Advance: 2-1/2 to 5 Degrees @ 1,000 RPM
Intermediate Advance: 6-1/2 to 9 Degrees @ 1,500 RPM
Full Advance: 13-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 11-1/4 Degrees @ 20" Vacuum
Part #D3OF-RA
Centrifugal Advance:
Advance Starts: 0 to 1-1/2 Degrees @ 500 RPM
Intermediate Advance: 3-1/2 to 5-1/2 Degrees @ 750 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 6-1/2 to 8-1/2 Degrees @ 1,500 RPM
Full Advance: 10 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 9-1/4 Degrees @ 20" Vacuum
Maximum Retard: 2 to 4 Degrees @ 20" Vacuum
Part #D3UF-EA
Centrifugal Advance:
Advance Starts: 0 to1-1/4 Degree @ 500 RPM
Intermediate Advance: 2-1/2 to 4-1/2 Degrees @ 750 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 9 to 11 Degrees @ 1,500 RPM
Full Advance: 14-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 9-1/4 Degrees @ 20" Vacuum
Maximum Retard: 5 to 7 Degrees @ 20" Vacuum
Part #D3ZF-GA
Centrifugal Advance:
Advance Starts: 0 to1 Degree @ 500 RPM
Intermediate Advance: 0 to 2-1/2 Degrees @ 750 RPM
Intermediate Advance: 2-1/4 to 4-1/4 Degrees @ 1,000 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,500 RPM
Full Advance: 11 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 12-1/2 Degrees @ 20" Vacuum
Part #D4AE-AA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 500 RPM
Intermediate Advance: 0 to 2 Degrees @ 750 RPM
Intermediate Advance: 2-1/2 to 4-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,500 RPM
Full Advance: 11 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 12-1/2 Degrees @ 20" Vacuum
Part #D4AE-HA
Centrifugal Advance:
Advance Starts: 0 to1 Degree @ 500 RPM
Intermediate Advance: 5 to 7 Degrees @ 750 RPM
Intermediate Advance: 6 to 8 Degrees @ 1,000 RPM
Intermediate Advance: 8 to 10-1/2 Degrees @ 1,500 RPM
Full Advance: 12-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 9-1/2 Degrees @ 20" Vacuum
Maximum Retard: 5 to 7 Degrees @ 20" Vacuum
Part #D4DE-FA
Centrifugal Advance:
Advance Starts: 0 to1-1/2 Degree @ 500 RPM
Intermediate Advance: 4-1/2 to 6-1/2 Degrees @ 750 RPM
Intermediate Advance: 7-1/2 to 9-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 9 to 11 Degrees @ 1,500 RPM
Full Advance: 12-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 7-1/4 Degrees @ 20" Vacuum
Maximum Retard: 2 to 4 Degrees @ 20" Vacuum
Part #D4DE-LA
Centrifugal Advance:
Advance Starts: 0 to 1-1/2 Degrees @ 500 RPM
Intermediate Advance: 4 to 6 Degrees @ 750 RPM
Intermediate Advance: 4-1/2 to 6-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 6 to 8 Degrees @ 1,500 RPM
Full Advance: 9-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 9 Degrees @ 20" Vacuum
Maximum Retard: 2 to 4 Degrees @ 20" Vacuum
Part #D4DE-MA
Centrifugal Advance:
Advance Starts: 0 to 1/2 Degrees @ 500 RPM
Intermediate Advance: 1/2 to 2-1/2 Degrees @ 750 RPM
Intermediate Advance: 3-1/2 to 5-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 7-1/2 to 9-1/2 Degrees @ 1,500 RPM
Full Advance: 13-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 11-1/2 Degrees @ 20" Vacuum
Part #D4DE-NA
Centrifugal Advance:
Advance Starts: 0 to1-1/2 Degree @ 500 RPM
Intermediate Advance: 3-1/2 to 5-1/2 Degrees @ 750 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 6-1/2 to 8-1/2 Degrees @ 1,500 RPM
Full Advance: 10 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 9-1/4 Degrees @ 20" Vacuum
Maximum Retard: 2 to 4 Degrees @ 20" Vacuum
Part #D4DE-RA
Centrifugal Advance:
Advance Starts: 0 to1-1/2 Degree @ 500 RPM
Intermediate Advance: 3-1/2 to 5-1/2 Degrees @ 750 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 6-1/2 to 8-1/2 Degrees @ 1,500 RPM
Full Advance: 10-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 9-1/4 Degrees @ 20" Vacuum
Maximum Retard: 2 to 4 Degrees @ 20" Vacuum
Part #D4OE-CA
Centrifugal Advance:
Advance Starts: 0 to 1/2 Degree @ 500 RPM
Intermediate Advance: 0 to 1-1/2 Degrees @ 750 RPM
Intermediate Advance: 2 to 4 Degrees @ 1,000 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,500 RPM
Full Advance: 10-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 13-1/2 Degrees @ 20" Vacuum
Part #D4VE-CA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 500 RPM
Intermediate Advance: 0 to 1/2 Degrees @ 750 RPM
Intermediate Advance: 3 to 5 Degrees @ 1,000 RPM
Intermediate Advance: 7 to 9 Degrees @ 1,500 RPM
Full Advance: 10-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 11-1/4 Degrees @ 20" Vacuum
Brake Specifications, Passenger Cars, All Series
6 & 8 Cylinder Passenger Cars:
Brake Drum Diameter: 10.00"
Wheel Cylinder Bore:
Front Disc: 2.600"
Front Drum: 1.125"
Rear: .875"
Master Cylinder Bore:
Disc Brakes: .9375"
Drum Brakes: .9375"
Rear Axle, All Models:
Carrier Type: Removable
Ring Gear & Pinion Backlash: .008"-.012"
Nominal Pinion Locating Shim: .015" (With 8" Ring Gear: .022")
Pinion Bearing Preload:
With New Bearings:
With Seal: 17-27 Inch Pounds
With Solid Spacer: 13-33 Inch Pounds
With Used Bearings:
With Seal: 8-14 Inch Pounds (With 6-3/4" Ring Gear: 6-12 Inch Pounds)
Differential Bearing Preload:
With New Bearings: .008"-.012"
With Used Bearings:
6-3/4" Ring Gear: .003"-.005"
8" Ring Gear: .005"-.008"
9" Ring Gear: .005"-.008"
Pinion Nut Torque:
With Collapsible Spacer: 170 Ft. Lbs.
With Solid Spacer: 200 Ft. Lbs.
Wheel Alignment Specifications:
All Models:
Caster: -1/2 Degrees
Camber:
Left: + 1/4 Degree
Right: + 1/4 Degree
Toe-In: 3/16"
Toe-Out on Turns:
Outer Wheel:
Manual Steering: 18.44 Degrees
Power Steering: 18.16 Degrees
Inner Wheel: 20 Degrees
Ford Carburetor Adjustments:
Note: See 1974 Ford Motor Company Carburetors Data File
Popular Options:
AM Radio & Antenna; AM-FM Multiplex Radio; AM-FM Monural Radio; Automatic Transmission; White Wall Tires; Deluxe Wheel Covers; Air Conditioning; Front & Rear Bumper Guards; Rear Window Defogger; Power Steering; Tinted Glass; Two-Tone Paint; Glamour Paint; Vinyl Roof; Bucket Seats; DeLuxe Wheel Covers; DeLuxe Left & Right Remote Control Racing Mirrors; Trim Rings with Hubcaps; Various Trim Optionns; Heavy Duty Battery; Various Trim Options; Engine & Transmission Options; and Much More.
1974 Mercury Historical Data:
Introduction date of the 1974 Mercury Comet was in the fall of 1973.
Total Mercury Production for the1974 model year was 403,977 including 125,695 Comets.
1974 Mercury Colors & Codes:
1-C Black
1-G Silver
1-H Medium Slate Blue
2-B Bright Red
2-E Red
3-B Light Blue
3-D Medium Blue
3-E Bright Blue
3-G Darkk Blue
3-M Silver Blue Glamour
3-N Light Brabber Blue
3-Q Pastel Blue
4-A Pastel Lime
4-B Green Gold
4-Q Dark Green
4-T Medium Ivy Bronze
4-V Dark Yellow Green
4-W Medium Lime Yellow
5-H Ginger
5-J Ginger Glamour
5-M Medium Chestnut
5-T Tan
5-W Orange
5-Y Dark Copper
6-C Medium Goldenrod
6-F Gold Glamour
6-M Medium Dark Gold
6-N Maize Yellow
9-A Wimbledon White
9-C White Decor
9-D White
Promotional Models Available:
None
Copyright 2001, Custom Solutions & Services