1971 MERCURY
MONTEGO & CYCLONE
Model Designations:
Mercury Montego, 6 & 8 Cylinder
Mercury Montego MX, 6 & 8 Cylinder
Mercury Montego MX Brougham, 6 & 8 Cylinder
Mercury Cyclone, 8 Cylinder
Mercury Cyclone GT, 8 Cylinder
Mercury Cyclone Spoiler, 8 Cylinder
Mercury Montego, 6 & 8 Cylinder, Body Styles:
2 Door Hardtop Coupe, 6 Passenger, Body # 01
Factory Price: $2,777; Shipping Weight: 3,124 Pounds
Production Total: 9,623
4 Door Sedan, 6 Passenger, Body # 02
Factory Price: $2,772; Shipping Weight: 3,125 Pounds
Production Total: 5,718
Mercury Montego MX, 6 & 8 Cylinder, Body Styles:
4 Door Station Wagon, 6 Passenger, Body # 08
Factory Price: $3,215; Shipping Weight: 3,547 Pounds
Production Total: 3,698
4 Door Sedan, 6 Passenger, Body # 06
Factory Price: $2,891; Shipping Weight: 3,131 Pounds
Production Total: 13,559
2 Door Hardtop Coupe, 6 Passenger, Body # 07
Factory Price: $2,861; Shipping Weight: 3,130 Pounds
Production Total: 13,719
Mercury Montego MX Brougham, 6 & 8 Cylinder, Body Styles:
4 Door Station Wagon, 6 Passenger, Body # 18
Factory Price: $3,456; Shipping Weight: 3,483 Pounds
Production Total: 2,121
4 Door Sedan, 6 Passenger, Body # 10
Factory Price: $3,073; Shipping Weight: 3,154 Pounds
Production Total: 1,565
2 Door Hardtop Coupe, 6 Passenger, Body # 11
Factory Price: $3,085; Shipping Weight: 3,171 Pounds
Production Total: 2,851
4 Door Hardtop Sedan, 6 Passenger, Body # 12
Factory Price: $3,157; Shipping Weight: 3,198 Pounds
Production Total: 1,156
Note: 6 & 8 Cylinder Production Figures are combined for all series.
Mercury Cyclone, 8 Cylinder, Body Styles:
2 Door Hardtop Coupe, 6 Passenger, Body # 15
Factory Price: $3,369; Shipping Weight: 3,587 Pounds
Production Total: 444
Mercury Cyclone GT, 8 Cylinder, Body Styles:
2 Door Hardtop Coupe, 5 Passenger, Body # 16
Factory Price: $3,681; Shipping Weight: 3,493 Pounds
Production Total: 2,287
Mercury Cyclone Spoiler, 8 Cylinder, Body Styles:
2 Door Hardtop Coupe, 5 Passenger, Body # 17
Factory Price: $3,801; Shipping Weight: 3,580 Pounds
Production Total: 353
Chassis:
Wheelbase:
Station Wagon: 114"
Passenger Cars: 117"
Tire Sizes:
Montego MX: F78 X 14"
Station Wagons: G78 X 14"
Cyclone GT: G78 X 14"
Cyclone & Cyclone Spoiler: 670 X 14"
Other Models: E78 X 14"
Engine Availability by Model:
I-6 250 Cubic Inches 145 H.P. Standard on all Montego Models.
V-8 302 Cubic Inches 210 H.P. Optional on all Montego Models.
V-8 351 Cubic Inches 240 H.P. Standard on Cyclone & Spoiler. Optional on other models.
V-8 351 Cubic Inches 285 H.P. Standard on Cyclone GT. Optional Engine on other models.
V-8 429 Cubic Inches 370 H.P. Optional Engine
V-8 429 Cubic Inches 375 H.P. Optional Engine
General Engine Specifications:
6 Cylinder, 145 H.P. Engine:
Engine Type: Overhead Valve, Inline 6
Bore & Stroke: 3.680" x 3.91"
Engine Displacement: 250 Cu. In.
Compression Ratio: 9.00:1
Taxable Horsepower: 32.50
Horsepower: 145 @ 4,000 RPM
Torque: 232 Ft. Lbs @ 1,600 RPM
Normal Oil Pressure: 35-60 PSI
Carburetor: 1 Barrel
8 Cylinder, 302 Cubic Inch, 210 H.P. Engine:
Engine Type: Overhead Valve, V-Type 8 Cylinder
Bore & Stroke: 4.00" x 3.00"
Engine Displacement: 302 Cu. In.
Compression Ratio: 9.00:1
Taxable Horsepower: 51.20
Horsepower: 210 @ 4,600 RPM
Torque: 296 Ft. Lbs @ 2,600 RPM
Normal Oil Pressure: 35-60 PSI
Carburetor: 2 Barrel
8 Cylinder, 351 Cubic Inch, 240 H.P. Engine:
Engine Type: Overhead Valve, V-Type 8 Cylinder
Bore & Stroke: 4.00" x 3.50"
Engine Displacement: 351 Cu. In.
Compression Ratio: 9.00:1
Taxable Horsepower: 51.20
Horsepower: 240 @ 4,600 RPM
Torque: 350 Ft. Lbs @ 2,600 RPM
Normal Oil Pressure: 35-60 PSI
Carburetor: 2 Barrel
8 Cylinder, 351 Cubic Inch, 285 H.P. Engine:
Engine Type: Overhead Valve, V-Type 8 Cylinder
Bore & Stroke: 4.00" x 3.50"
Engine Displacement: 351 Cu. In.
Compression Ratio: 10.70:1
Taxable Horsepower: 51.20
Horsepower: 285 @ 5,400 RPM
Torque: 370 Ft. Lbs @ 3,400 RPM
Normal Oil Pressure: 35-60 PSI
Carburetor: 4 Barrel
V-8 Engine, 429 Cubic Inches, 370 H.P.:
Engine Type: Overhead Valve, V-8
Bore & Stroke: 4.36" x 3.59"
Engine Displacement: 429 Cu. In.
Compresssion Ratio: 11.30 to 1
Taxable Horsepower: 60.83
Horsepower: 370 @ 5,400 RPM
Torque: 450 Ft. Lbs @ 3,400 RPM
Normal Oil Pressure: 35-60 PSI
Carburetor: 4 Barrel
V-8 Engine, 429 Cubic Inches, 375 H.P.:
Engine Type: Overhead Valve, V-8
Bore & Stroke: 4.36" x 3.59"
Engine Displacement: 429 Cu. In.
Compresssion Ratio: 11.50 to 1
Taxable Horsepower: 60.83
Horsepower: 375 @ 5,600 RPM
Torque: 450 Ft. Lbs @ 3,400 RPM
Normal Oil Pressure: 35-60 PSI
Carburetor: 4 Barrel
Tune Up Specifications - All Series:
6 Cylinder 250 Cubic Inch Engine:
Spark Plug Type: Autolite BRF-82
Spark Plug: Gap .034"
Point Gap:
Dual Diaphragm: .027"
Single Diaphragm: .025"
Distributor Cam Angle:
Dual Diaphragm: 35-40 Degrees
Single Diaphragm: 37-42 Degrees
Firing Order: 1-5-3-6-2-4
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 600 RPM; 800 RPM with Throttle Solenoid Energized
Automatic Transmission: 500 RPM in Drive; 600 RPM in Drive with Throttle Solenoid Energized
Air to Fuel Ratio:
Standard Transmission: 14.2 to 1
Automatic Transmission: 14.2 to 1
Idle CO:
Standard Transmission: 1.5%
Automatic Transmission: 1.5%
8 Cylinder 302 Cubic Inch Engine:
Spark Plug Type: Autolite BRF-42
Spark Plug: Gap .034"
Point Gap: .021"
Distributor Cam Angle: 24-29 Degrees
Firing Order: 1-5-4-2-6-3-7-8
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 500 RPM; 800 RPM with Throttle Solenoid Energized
Automatic Transmission: 500 RPM; 600 RPM in Drive with Throttle Solenoid Energized
Air to Fuel Ratio:
Standard Transmission: 14.5 to 1
Automatic Transmission: 14.5 to 1
Idle CO:
Standard Transmission: 0.3%
Automatic Transmission: 0.4%
8 Cylinder 351 Cubic Inch Engine, with 2 Barrel Carburetor:
Spark Plug Type: Autolite ARF-42
Spark Plug: Gap .034"
Point Gap:
With Dual Diaphragm: .021"
With Single Diaphragm: .017"
Distributor Cam Angle:
With Dual Diaphragm: 24-29 Degrees
With Single Diaphragm: 26-31 Degrees
Firing Order: 1-3-7-2-6-5-4-8
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 500 RPM; 700 RPM with Throttle Solenoid Energized
Automatic Transmission: 600 RPM in Drive
Air to Fuel Ratio:
Standard Transmission: 14.5 to 1
Automatic Transmission: 14.5 to 1
Idle CO:
Standard Transmission: 0.2%
Automatic Transmission: 0.2%
8 Cylinder 351 Cubic Inch Engine, with 4 Barrel Carburetor:
Spark Plug Type: Autolite ARF-32
Spark Plug: Gap .034"
Point Gap: .021"
Distributor Cam Angle: 24-29 Degrees
Firing Order: 1-3-7-2-6-5-4-8
Ignition Timing: 6 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 500 RPM; 800 RPM with Throttle Solenoid Energized
Automatic Transmission: 600 RPM in Drive;
Air to Fuel Ratio:
Standard Transmission: 14.5 to 1
Automatic Transmission: 14.5 to 1
Idle CO:
Standard Transmission: 1.1%
Automatic Transmission: 1.1%
8 Cylinder 429 Cubic Inch Engine:
Spark Plug Type: Autolite AF-42
Spark Plug: Gap .034"
Point Gap: .021"
Distributor Cam Angle: 24-29 Degrees
Firing Order: 1-5-4-2-6-7-3-8
Ignition Timing: 10 Degrees BTDC
Engine Idle Speed:
Standard Transmission: 500 RPM; 700 RPM with Throttle Solenoid Energized
Automatic Transmission: 500 RPM in Drive; 650 RPM in Drive with Throttle Solenoid Energized
Air to Fuel Ratio:
Standard Transmission: 14.5 to 1
Automatic Transmission: 14.5 to 1
Idle CO:
Standard Transmission: 0.3%
Automatic Transmission: 0.3%
Valve Specifications:
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: 1-9/16"
Valve Spring Pressure: 150 Lbs @ 1.22"
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"-.190"
Exhaust: .090"-.190"
Valve Angles:
Seat: 45 Degrees
Face: 44 Degrees
Valve Spring Height, Installed: 1-5/8"
Valve Spring Pressure: 180 Lbs @ 1.23"
Valve Stem Clearance:
Intake .001"-.0027"
Exhaust .001"-.0027"
Valve Stem Diameter:
Intake: .3416"-.3423"
Exhaust: .3411"-.3418"
8 Cylinder 351 Cubic Inch Windsor Engine:
Valve Lash:
Intake: .100"-.200"
Exhaust: .100"-.200"
Valve Angles:
Seat: 45 Degrees
Face: 44 Degrees
Valve Spring Height, Installed: 1-25/32"
Valve Spring Pressure: 215 Lbs @ 1.34"
Valve Stem Clearance:
Intake .001"-.0027"
Exhaust .001"-.0027"
Valve Stem Diameter:
Intake: .3416"-.3423"
Exhaust: .3411"-.3418"
8 Cylinder 351 Cubic Inch Cleveland Engine with 2 Barrel Carburetor:
Valve Lash:
Intake: .100"-.200"
Exhaust: .100"-.200"
Valve Angles:
Seat: 45 Degrees
Face: 44 Degrees
Valve Spring Height, Installed: 1-13/16"
Valve Spring Pressure: 210 Lbs @ 1.42"
Valve Stem Clearance:
Intake .001"-.0027"
Exhaust .0015"-.0027"
Valve Stem Diameter:
Intake: .3416"-.3423"
Exhaust: .3411"-.3418"
8 Cylinder 351 Cubic Inch Cleveland Engine with 4 Barrel Carburetor:
Valve Lash:
Intake: .100"-.200"
Exhaust: .100"-.200"
Valve Angles:
Seat: 45 Degrees
Face: 44 Degrees
Valve Spring Height, Installed: 1-13/16"
Valve Spring Pressure: 285 Lbs @ 1.32"
Valve Stem Clearance:
Intake .001"-.0027"
Exhaust .001"-.0027"
Valve Stem Diameter:
Intake: .3416"-.3423"
Exhaust: .3411"-.3418"
8 Cylinder Engine, 429 Cu. In., "CJ":
Valve Lash:
Intake: .075"-.155" Hot
Exhaust: .075"-.155" Hot
Valve Angles:
Seat: 45 Degrees
Face: 44 Degrees
Valve Spring Height, Installed: 1-13/32"
Valve Spring Pressure: 315 Lbs @ 1.32 inches
Valve Stem Clearance:
Intake .001"-.0027";
Exhaust .001"-.0027"
Valve Stem Diameter:
Intake: .3416"-.3423"
Exhaust: .3416"-.3423"
Piston, Rings, Pins, Crankshaft & Bearing Data:
6 Cylinder Engines:
Piston Clearance: .0014"-.0020"
Ring End Gap:
Compression: .010"
Oil: .015"
Wrist Pin Diameter: .912"
Rod Bearings:
Shaft Diameter: 2.1232"-2.1240"
Bearing Clearance: .0008"-.0026"
Main Bearings:
Shaft Diameter: 2.3982"-2.3990"
Bearing Clearance: .0005"-.0025"
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: .0005"-.0025"
Thrust on Bearing #3
Crankshaft End Play: .004"-.008"
8 Cylinder, 351 Cubic Inch Windsor Engine:
Piston Clearance: .0018"-.0026"
Ring End Gap:
Compression: .010"
Oil: .015"
Wrist Pin Diameter: .912"
Rod Bearings:
Shaft Diameter: 2.3103"-2.3110"
Bearing Clearance: .0008"-.0026"
Main Bearings:
Shaft Diameter: 2.9994"-3.0002"
Bearing Clearance: .0013"-.0025"
Thrust on Bearing #3
Crankshaft End Play: .004"-.008"
8 Cylinder, 351 Cubic Inch Cleveland Engine:
Piston Clearance: .0014"-.0022"
Ring End Gap:
Compression: .010"
Oil: .015"
Wrist Pin Diameter: .912"
Rod Bearings:
Shaft Diameter: 2.3103"-2.3110"
Bearing Clearance: .0008"-.0026"
Main Bearings:
Shaft Diameter: 2.9994"-3.0002"
Bearing Clearance: .0013"-.0029"
Thrust on Bearing #3
Crankshaft End Play: .004"-.008"
8 Cylinder, 429 Cubic Inch Engine "CJ":
Piston Clearance: .003"-.0038"
Ring End Gap:
Compression: .010"
Oil: .010"
Wrist Pin Diameter: 1.040"
Rod Bearings:
Shaft Diameter: 2.4992"-2.5000"
Bearing Clearance: .001"-.0015"
Main Bearings:
Shaft Diameter: 2.9994"-3.0002"
Bearing Clearance: .0005"-.0025"
Thrust on Bearing #3
Crankshaft End Play: .004"-.008"
Engine Tightening Specifications:
6 Cylinder Engine:
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: 23-25 Ft. Lbs.
Exhaust Manifold: 12-16 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: 100-130 Ft. Lbs.
8 Cylinder 351 Cubic Inch Engines:
Spark Plugs: 15-20 Ft. Lbs.
Cylinder Head Bolts: 95-100 Ft. Lbs.
Intake Manifold: 23-25 Ft. Lbs.
Exhaust Manifold: 18-24 Ft. Lbs.
Rocker Arm Cover: 3-5 Ft. Lbs.
Connecting Rod Cap Bolts: 40-45 Ft. Lbs.
Main Bearing Cap Bolts: 95-105 Ft. Lbs.
Flywheel to Crankshaft: 75-85 Ft. Lbs.
Vibration Damper or Pulley: 70-90 Ft. Lbs.
8 Cylinder 400 Cubic Inch Engines:
Spark Plugs: 10-15 Ft. Lbs.
Cylinder Head Bolts: 95-100 Ft. Lbs.
Intake Manifold:
5/16" Bolts: 23-25 Ft. Lbs.
3/8" Bolts: 28-32 Ft. Lbs.
1-4" Bolts: 6-9 Ft. Lbs.
Exhaust Manifold:
5/16" Bolts: 23-25 Ft. Lbs.
3/8" Bolts: 28-32 Ft. Lbs.
1-4" Bolts: 6-9 Ft. Lbs.
Rocker Arm Stud Nut: 17-23 Ft. Lbs.
Rocker Arm Cover: 3-5 Ft. Lbs.
Connecting Rod Cap Bolts: 40-45 Ft. Lbs.
Main Bearing Cap Bolts: 95-105 Ft. Lbs.
Flywheel to Crankshaft: 75-85 Ft. Lbs.
Vibration Damper or Pulley: 70-90 Ft. Lbs.
8 Cylinder, 429 Cubic Inch Engine:
Spark Plugs: 15-20 Ft. Lbs.
Cylinder Head Bolts: 130-140 Ft. Lbs.
Intake Manifold: 25-30 Ft. Lbs.
Exhaust Manifold: 28-33 Ft. Lbs.
Rocker Arm Cover: 2-1/2 to 4 Ft. Lbs.
Connecting Rod Cap Bolts: 40-45 Ft. Lbs.
Main Bearing Cap Bolts: 95-105 Ft. Lbs.
Flywheel to Crankshaft: 75-85 Ft. Lbs.
Vibration Damper or Pulley: 75-90 Ft. Lbs.
Capacities-All Series:
With 6 Cylinder Engine:
Cooling System:
Without Heater: 7-1/2 Quarts
With Heater: 8-1/2 Quarts
With Air Conditioning: 8-1/2 Quarts
Radiator Cap Pressure:
With Air Conditioning: 12-15 PSI
Without Air Conditioning: 12-15 PSI
Thermostat Opening: 190 Degrees
Fuel Tank:
Passenger Cars: 20 Gallons
Station Wagons: 18 Gallons
Engine Oil Refill: 4-1/2 Quarts*
Manual Transmission:
Three Speed: 3-1/2 Pints
Automatic Transmission: 9 Quarts
Rear Axle: 4 Pints
* With New Oil Filter
With 8 Cylinder, 302 Cubic Inch Engine:
Cooling System:
Without Heater: 14 Quarts
With Heater: 15 Quarts
With Air Conditioning: 15 Quarts
Radiator Cap Pressure:
With Air Conditioning: 12-15 PSI
Without Air Conditioning: 12-15 PSI
Thermostat Opening: 190 Degrees
Fuel Tank:
Passenger Cars: 20 Gallons
Station Wagons: 18 Gallons
Engine Oil Refill: 5 Quarts*
Manual Transmission:
Three Speed: 3-1/2 Pints
Four Speed: 4 Pints
Automatic Transmission: 9 Quarts
Rear Axle: 4 Pints
* With New Oil Filter
With 8 Cylinder, 351 Cubic Inch Engine:
Cooling System:
Without Heater: 15-1/4 Quarts
With Heater: 16-1/4 Quarts
With Air Conditioning: 16-1/4 Quarts
Radiator Cap Pressure:
With Air Conditioning: 12-15 PSI
Without Air Conditioning: 12-15 PSI
Thermostat Opening: 190 Degrees
Fuel Tank:
Passenger Cars: 20 Gallons
Station Wagons: 18 Gallons
Engine Oil Refill: 5 Quarts*
Manual Transmission:
Three Speed: 3-1/2 Pints
Four Speed: 4 Pints
Automatic Transmission:
C4: 10-1/4 Quarts
FMX: 11 Quarts
C6: 12-3/4 Quarts
Rear Axle: 5 Pints
* With New Oil Filter
With 8 Cylinder, 429 Cubic Inch Engines:
Cooling System:
Without Heater: 18-1/2 Quarts
With Heater: 19-1/2 Quarts
With Air Conditioning: 19-1/2 Quarts
Radiator Cap Pressure:
With Air Conditioning: 12-15 PSI
Without Air Conditioning: 12-15 PSI
Thermostat Opening: 190 Degrees
Fuel Tank:
With Air Conditioning: 12-15 PSI
Without Air Conditioning: 12-15 PSI
Engine Oil Refill: 7 Quarts*
Manual Transmission:
Three Speed: 3-1/2 Pints
Four Speed: 4 Pints
Automatic Transmission: 12-3/4 Quarts
Rear Axle: 5 Pints
* With New Oil Filter
Starting Motor Specifications:
6 Cylinder 250 Cubic Inch Engines:
Part #D0ZF-A
Brush Spring Tension: 40 Ounces
No Load Test: 70 Amperes, 12 Volts
Torque Test: 670 Amperes, 6.0 Volts, @ 15-1/2 Ft. Lbs.
Part #D0AF-B
Brush Spring Tension: 40 Ounces
No Load Test: 70 Amperes, 12 Volts
Torque Test: 670 Amperes, 6.0 Volts, @ 15-1/2 Ft. Lbs.
302 Cubic Inch 8 Cylinder Engines:
Part #D0ZF-A
Brush Spring Tension: 40 Ounces
No Load Test: 70 Amperes, 12 Volts
Torque Test: 670 Amperes, 6.0 Volts, @ 15-1/2 Ft. Lbs.
Part #D0AF-B
Brush Spring Tension: 40 Ounces
No Load Test: 70 Amperes, 12 Volts
351 Cubic Inch 8 Cylinder Engines:
Part #D0AF-B
Brush Spring Tension: 40 Ounces
No Load Test: 70 Amperes, 12 Volts
429 Cubic Inch 8 Cylinder Engines:
Part #C9AF-A
Brush Spring Tension: 40 Ounces
No Load Test: 70 Amperes, 12 Volts
Ford Alternator Specifications:
Note: Not alternators shown are available on the Montego & Cyclone.
Part #D0ZF-10300-B
Current Rating: 38 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.4 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.5-15.3 Volts
Field Relay:
Closing Voltage @ 75 Degrees: 2.0 to 4.2 Volts
Part #D0AF-10300-C
Current Rating: 42 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.5-15.3 Volts
Field Relay:
Closing Voltage @ 75 Degrees: 2.0 to 4.2 Volts
Part #D0AF-10300-F
Current Rating: 42 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.5-15.3 Volts
Field Relay:
Closing Voltage @ 75 Degrees: 2.0 to 4.2 Volts
Part #D0AF-10300-G
Current Rating: 42 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.5-15.3 Volts
Field Relay:
Closing Voltage @ 75 Degrees: 2.0 to 4.2 Volts
Part #D0AF-10300-E
Current Rating: 55 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.5-15.3 Volts
Field Relay:
Closing Voltage @ 75 Degrees: 2.0 to 4.2 Volts
Part #D0AF-10300-H
Current Rating: 55 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.5-15.3 Volts
Field Relay:
Closing Voltage @ 75 Degrees: 2.0 to 4.2 Volts
Part #D0ZF-10300-A
Current Rating: 55 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.6-15.1 Volts
Contact Gap: .018"-.020"
Armature Air Gap: .042"-.052"
Field Relay:
Armature Air Gap: .011"-.013"
Closing Voltage @ 75 Degrees: 6.2 to 7.2 Volts
Part #D0ZF-10300-C
Current Rating: 55 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.6-15.1 Volts
Contact Gap: .018"-.020"
Armature Air Gap: .042"-.052"
Field Relay:
Armature Air Gap: .011"-.013"
Closing Voltage @ 75 Degrees: 6.2 to 7.2 Volts
Part #D0SF-10300-A
Current Rating: 55 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.6-15.1 Volts
Contact Gap: .018"-.020"
Armature Air Gap: .042"-.052"
Field Relay:
Armature Air Gap: .011"-.013"
Closing Voltage @ 75 Degrees: 6.2 to 7.2 Volts
Part #D0LF-10300-A
Current Rating: 55 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Part #D1ZF-10300-AA
Current Rating: 55 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.5-15.3 Volts
Field Relay:
Closing Voltage @ 75 Degrees: 2.0 to 4.2 Volts
Part #D1AF-10300-AA
Current Rating: 61 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Voltage Regulator: (Autolite)
Voltage @ 75 Degrees: 13.5-15.3 Volts
Field Relay:
Closing Voltage @ 75 Degrees: 2.0 to 4.2 Volts
Part #D1AF-10300-A
Current Rating: 65 Amperes @ 15 Volts
Field Current @ 75 Degrees: 2.9 Amperes @ 12 Volts
Distributor Specifications:
Note: Not distributors shown are available on the Montego & Cyclone
Part #D9DF-B
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 4-1/2 to 6-1/2 Degrees @ 750 RPM
Intermediate Advance: 7 to 9 Degrees @ 1,000 RPM
Intermediate Advance: 9 to 11-1/4 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,050 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 8 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D0AF-Y
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1-3/4 Degrees @ 750 RPM
Intermediate Advance: 6 to 8 Degrees @ 1,000 RPM
Intermediate Advance: 8 to 10-1/4 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,325 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 11 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D0DF-C
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 1/2 to 2-1/2 Degrees @ 500 RPM
Intermediate Advance: 9 to 11 Degrees @ 1,000 RPM
Intermediate Advance: 10 to 12-1/4 Degrees @ 1,500 RPM
Full Advance: 16 Degrees @ 2,800 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 7 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D0OF-AA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1-1/2 Degrees @ 500 RPM
Intermediate Advance: 5 to 7-1/4 Degrees @ 750 RPM
Intermediate Advance: 10-1/4 to 12-1/2 Degrees @ 1,500 RPM
Full Advance: 18 Degrees @ 2,200 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 8-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D0OF-AC
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1-3/4 Degrees @ 750 RPM
Intermediate Advance: 5-1/2 to 8 Degrees @ 1,000 RPM
Intermediate Advance: 7-1/4 to 9-1/4 Degrees @ 1,500 RPM
Full Advance: 13 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 5 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D0OF-G
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 3 to 5 Degrees @ 750 RPM
Intermediate Advance: 5-1/2 to 7-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 6-3/4 to 8-3/4 Degrees @ 1,500 RPM
Full Advance: 13 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 10-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D0OF-T
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 2 to 4 Degrees @ 750 RPM
Intermediate Advance: 4-1/2 to 6-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 7-3/4 to 10 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,300 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 12-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D0OF-U
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 1-1/4 to 3-1/4 Degrees @ 500 RPM
Intermediate Advance: 6-1/4 to 8-1/4 Degrees @ 750 RPM
Intermediate Advance: 8-1/4 to 10-1/2 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,275 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 12-1/2 Degrees @ 25" Vacuum
Part #D0OF-V
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 3/4 to 2-3/4 Degrees @ 750 RPM
Intermediate Advance: 3-3/4 to 5-3/4 Degrees @ 1,000 RPM
Intermediate Advance: 8-1/2 to 10-3/4 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,300 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 10-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1AF-NA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 3 to 7 Degrees @ 750 RPM
Intermediate Advance: 8 to 10 Degrees @ 1,000 RPM
Intermediate Advance: 10-1/2 to 12-1/2 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 8-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1DF-BB
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 3/4 Degrees @ 500 RPM
Intermediate Advance: 3 to 5 Degrees @ 750 RPM
Intermediate Advance: 9-1/2 to 11-3/4 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 7-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1DF-EA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1-3/4 Degrees @ 750 RPM
Intermediate Advance: 5-1/2 to 8 Degrees @ 1,000 RPM
Intermediate Advance: 7-1/4 to 9-1/4 Degrees @ 1,500 RPM
Full Advance: 13 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 11-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1DF-FA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 2 Degrees @ 500 RPM
Intermediate Advance: 3-1/4 to 5 Degrees @ 750 RPM
Intermediate Advance: 9 to 11 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 8 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1DF-GA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 3/4 Degrees @ 750 RPM
Intermediate Advance: 3-1/4 to 5-3/4 Degrees @ 1,000 RPM
Intermediate Advance: 9 to 11-1/4 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 7 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1OF-AB
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1-1/2 Degrees @ 500 RPM
Intermediate Advance: 3-1/2 to 5-1/4 Degrees @ 750 RPM
Intermediate Advance: 7 to 9 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 7-1/2 Degrees @ 25" Vacuum
Part #D1OF-BB
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1 Degrees @ 750 RPM
Intermediate Advance: 3-1/2 to 5-1/2 Degrees @ 1,000 RPM
Intermediate Advance: 7 to 9-1/4 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 7-1/2 Degrees @ 25" Vacuum
Part #D1OF-CA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1-1/2 Degrees @ 500 RPM
Intermediate Advance: 3-1/4 to 5-1/4 Degrees @ 750 RPM
Intermediate Advance: 7 to 9-1/4 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 10 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1OF-GA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 3-1/4 to 5-1/4 Degrees @ 750 RPM
Intermediate Advance: 6-1/2 to 8-3/4 Degrees @ 1,000 RPM
Intermediate Advance: 8-1/4 to 10-1/2 Degrees @ 1,500 RPM
Full Advance: 13 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 11 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1OF-LA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 1/2 to 3-1/4 Degrees @ 750 RPM
Intermediate Advance: 5-1/4 to 7-1/4 Degrees @ 1,000 RPM
Intermediate Advance: 6-3/4 to 9 Degrees @ 1,500 RPM
Full Advance: 18 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 10-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1OF-PA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1-1/2 Degrees @ 500 RPM
Intermediate Advance: 4-1/2 to 6-1/2 Degrees @ 750 RPM
Intermediate Advance: 10-1/2 to 12-3/4 Degrees @ 1,500 RPM
Full Advance: 14 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 11 Degrees @ 25" Vacuum
Part #D1ZF-AA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 0 to 1-1/2 Degrees @ 750 RPM
Intermediate Advance: 2-3/4 to 4-3/4 Degrees @ 1,000 RPM
Intermediate Advance: 8-3/4 to 10 Degrees @ 1,500 RPM
Full Advance: 11 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 2-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1ZF-EA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 1 to 3 Degrees @ 750 RPM
Intermediate Advance: 4 to 6 Degrees @ 1,000 RPM
Intermediate Advance: 9-1/2 to 12 Degrees @ 1,500 RPM
Full Advance: 15 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 10-1/2 Degrees @ 25" Vacuum
Maximum Retard: 7 Degrees @ 20" Vacuum
Part #D1ZF-FA
Centrifugal Advance:
Advance Starts: 0 to1/2 Degree @ 350 RPM
Intermediate Advance: 1-1/4 to 3-1/2 Degrees @ 750 RPM
Intermediate Advance: 4-1/4 to 6-1/4 Degrees @ 1,000 RPM
Intermediate Advance: 10 to 12 Degrees @ 1,500 RPM
Full Advance: 16-1/2 Degrees @ 2,500 RPM
Vacuum Advance Data:
Advance Starts @ 5" Vacuum
Full Advance: 8-1/2 Degrees @ 25" Vacuum
Brake Specifications, Passenger Cars, All Series
Passenger Cars:
Brake Drum Diameter: 10.00"
Wheel Cylinder Bore:
Front Disc: 2.381"
Front Drum: 1.125"
Rear: .906"
Master Cylinder Bore:
Disc Brakes: .9375
Drum Brakes: 1"
Power Brakes: .9375
Station Wagons:
Brake Drum Diameter: 10.00"
Wheel Cylinder Bore:
Front Disc: 2.381"
Front Drum: 1.125"
Rear: .968"
Master Cylinder Bore:
Disc Brakes: .9375
Drum Brakes: 1"
Power Brakes: .9375
Rear Axle, All Models:
Carrier Type: Integral
Ring Gear & Pinion Backlash: .008"-.012"
Nominal Pinion Locating Shim: .017"
Method: Shims
Pinion Bearing Preload:
With New Bearings: 17-27 Inch Pounds
With Used Bearings: 6-12 Inch Pounds
Differential Bearing Preload:
With New Bearings: .008"-.012"
With Used Bearings: .003"-.005"
Pinion Nut Torque: 175 Ft. Lbs.
Carrier Type: Removable
Ring Gear & Pinion Backlash: .008"-.012"
Nominal Pinion Locating Shim:
With 7-3/4" or 8" Ring Gear: .022"
With 8-3/4" or 9" Ring Gear: .015"
Method: Shims
Pinion Bearing Preload:
With New Bearings:
With 7-3/4" or 8" Ring Gear: 17-32 Inch Pounds
With 8-3/4" or 9" Ring Gear: 22-32 Inch Pounds
With Used Bearings: 8-14 Inch Pounds
Differential Bearing Preload:
With New Bearings: .008"-.012"
With Used Bearings: .003"-.008"
Pinion Nut Torque: 175 Ft. Lbs.
Wheel Alignment Specifications:
All Models:
Caster: +3/4 Degrees
Camber:
Left: + 1/4 Degree
Right: + 1/4 Degree
Toe-In: 3/16"
Toe-Out on Turns:
Outer Wheel:
Manual Steering: 17.32 Degrees
Power Steering: 17-7/8 Degrees
Inner Wheel: 20 Degrees
Mercury Montego & Cyclone Carburetor Specifications:
Note: See 1971 Ford Motor Company Carburetors Data Base
Popular Options:
AM Radio; AM-FM Stereo Radio; Rear Seat Speaker; Air Conditioning; Heavy Duty Battery; Elctric Clock; Extra Heavy Duty Cooling Package; Conslole; Rear Window Defroster; Tinted Glass; Luggage Carrier on MX Station Wagon; Remote Control Left Side Mirror; Bodyside Molding; Front Disc Brakes; Four Way Power Seat; Power Steering; Powr Windows; Power Tailgate Window; Vinyl Roof; Deluxe Seat Shoulder Belts; High Back Bucket Seats; Houndstooth Cyclone Interiolr; Third Seat for Station Wagons; Rim Blow Steering Wheel; Tilt Steering Wheel; Hubcaps with Trim Rings for Cyclones; Deluxe Wheel Covers; Luxury Wheel Covers; Courtesy Light Group; Instrumentation Group; Trailer Towing Package; Engine & Transmission Options; Various Trim Options, and Much More.
1971 Mercury Historical Data:
Introduction date of the 1971 Mercury line was on September 18, 1970.
Total Mercury Production for the1971 model year was 365,310 including 57,094 Montegos & Cyclones.
1971 Mercury Colors &Codes:
A History Onyx Black
B Maroon
C Dark Green
D Competition Yellow
E Medium Yellow Gold
F Medium Blue
H Light Green
I Bright Lime Green
J Competition Blue
M Knight White
N Pastel Blue
P Medium Ivy Green
Q Medium Blue
S Gray Gold
T Red
U Competition Gold
V Light Pewter
W Yellow
Y Dark Blue
Z Competition Green
1 Competition Orange
2 Bright Yellow
3 Bright Red
5 Medium Brown
6 Bright Blue
7 Maroon
8 Light Gold
9 Pastel Yellow
49 Ivy Bronze
79 Ginger Bronze
Montego "Spoiler"
A Black
B Dark Blue
G Bright Yellow
Promotional Models Available:
Mercury Comet 2 Door Sedan.
Copyright 2001, Custom Solutions & Services