1938 BUICK

Models:

Buick Special, Series 40, 8 Cylinder

Buick Century, Series 60, 8 Cylinder

Buick Roadmaster, Series 80, 8 Cylinder

Buick Limited, Series 90, 8 Cylinder

Buick Special, Series 40, 8 Cylinder

Body Data & Pricing:

2 Door Convertible Phaeton, 5 Passenger, Model 40C

Base Price: $1,406; Shipping Weight: 3,705 Pounds; Production Total: 776

4 Door Trunk Back Sedan, 5 Passenger, Model 41

Base Price: $1,047; Shipping Weight: 3,560 Pounds; Production Total: 79,510

2 Door Sport Sedan, 5 Passenger, Model 44

Base Price: $981; Shipping Weight: 3,515 Pounds; Production Total: 5,943

2 Door Business Coupe, 2 Passenger; Model 46

Base Price: $945; Shipping Weight: 3,385 Pounds; Production Total: 11,337

2 Door Convertible Coupe, 4 Passenger, Model 46C

Base Price: $1,103; Shipping Weight: 3,575 Pounds; Production Total: 2,473

2 Door Sport Coupe, 4 Passenger, Model 46S

Base Price: $1,001; Shipping Weight: 3,425 Pounds; Production Total: 5,381

4 Door Sport Sedan, 5 Passenger, Model 47

Base Price: $1,022; Shipping Weight: 3,535 Pounds; Production Total: 11,265

2 Door Trunk Sedan, 5 Passenger, Model 48

Base Price: $1,006; Shipping Weight: 3,520 Pounds; Production Total: 14,153

Major Specifications, Buick Special, Model 40

Wheelbase: 122"

Engine Type: Overhead Valve In-Line 8 Cylinder

Engine Bore & Stroke: 3-3/32" X 4-1/8"

Engine Displacement: 248.0 Cu. In.

Compression Ratio: 6.15:1

Taxable Horsepower: 30.63

Horsepower: 107 @ 3,400 RPM

Torque: 203 Ft Lbs @ 2,000 RPM

Carburetor: 2 Barrell, Stromberg Downdraft AAV-1 or Marvel CD1

Rear Axle Ratio: 4.40:1

Tire Size: 6.50 X 16 Inches; Pressures: 23 Front & 28 Rear

Capacities, Buick Special, Model 40

Cooling System: 13-1/4 Quarts

Fuel Tank: 18 Gallons

Engine Oil: 6 Quarts

Grade of Oil: +32 Degrees F & Above, 20

+10 Degrees F & Above, 20W

- 10 Degrees F & Above, 10W

Transmission Capacity: 1-3/4 Pints

Grade of Oil: Summer, 140; Winter, 90

For Semi-Automatic Transmission: 3-1/2 Quarts of Engine Oil

Rear Axle Capacity: 3 Pints

Grade of Oil: Summer, 90H; Winter, 90H

Beginning Engine Number, Buick Special, Series 40: 4-3396937

Tune-Up Data, Buick Special, Series 40

Spark Plug Gap: .025"

Spark Plug Type: Champion J-8 or UJ-12 or equivalent

Ignition Point Gap: .015"

Cam Angle: 25 Degrees

Ignition Timing Mark & Location: "ADV" Mark on Flywheel

Firing Order: 16258374

Tappet Clearance, Hot:

Intake: .015" Exhaust: .015"

Cylinder Head Tension: 65-70 Ft Lbs

Valve Data, Buick Special, Series 40

Tappet Clearance, Running Hot:

Intake: .015"

Exhaust: .015"

Tappet Clearance for Timing:

Intake: .015"

Exhaust: .015"

Valve Timing:

Intake Valve Opens: 13 Degrees BTDC

Exhaust Valve Closes: 22 Degrees ATDC

Valve Seat Angle:

Intake: 45 Degrees

Exhaust: 45 Degrees

Minimum Valve Spring Pressure (New Spring):

Inner Spring: 45 Pounds @ 1-5/16"

Outer Spring: 67 Pounds @ 1-19/32"

Valve Stem Clearance:

Intake: .0015"-.0035"

Exhaust: .0021"-.0039"

Piston & Ring Data, Buick Special, Series 40

Pistons Removed from Above

Piston Clearance (Minimum):

Top Land: .018"

Top of Skirt: .0018"

Fitting Pistons with Spring Scale:

Shim Thickness to Use: Should fall @ .0015" and hold @ .00225"

Pounds Pull on Scale: Use Shim Thickness Data

Width of Ring End Gap (Minimum):

Compression: .010"

Oil Control: .010"

Clearance Between Ring & Grooves:

Compression: .0015"-.003"

Oil Control: .0015"-.003"

Engine Bearing Data, Buick Special, Series 40

Camshaft End Play: .004"-.008"

Camshaft Bearing Clearance: .0005"-.0035"

Connecting Rod Bearing Journal Diameter: 1.997"-1.999"

Connecting Rod Bearing Clearance: .0008"-.0018"

Connecting Rod End Play: .005"-.010"

Connecting Rod Bolt Tension: 40-45 Ft Lb

Main Bearing Journal Diameter:

#1: 2.3095"-2.3115" #2: 2.3725"-2.3745" #3: 2.4345"-2.4365"

#4: 2.4975"-2.4995" #5: 2.5595"-2.5615"

Main Bearing Clearance: .0007"-.0022"

Crankshaft End Play: .004:-.007"

Main Bolt Tension: 90-100 Ft Lbs

Brake Data, Buick Special, Series 40

Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded

Length of Lining Per Wheel: 22-11/16"

Width of Lining: 1-3/4"

Thickness of Lining: 3/16"

Brake Pedal Free Play: 1-1/8"

Wheel Alignment Data, Buick Special, Series 40

Caster: - 7/8 Degrees

Camber: +3/8 Degrees

Toe In: 1/32"

Kingpin Inclination: 4 Degrees

Rear Axle Data, Buick Special, Series 40

Ring Gear & Pinion Backlash: .006"-.010"

Drive Pinion Adjustment: Shims

Drive Pinion Bearing Adjustment: None

Axle Shaft End Play: .000"-.008"

Delco-Remy Distributor Specifications, Series 40:

Distributor # 1110801

Cam Angle: 25 Degrees

Point Opening: .015"

Condensor Capacity: .20-.25 Mfds

Breker Arm Spring Tension: 19-23 Ounces

Centrifugal Advance Data:

Advance Starts: 1 Degree @ 250 RPM

Full Advance: 13 Degrees @ 1,500 RPM

Vacuum Advance Data

Inches of Vacuum to Start Plunger Movement: 5-7

Inches of Vacuum for Full Plunger Travel: 10-13

Maximum Vacuum Advance: 5-1/2 Degrees

Delco-Remy Generator Specifications, Series 40:

Generator # 1101052

Brush Spring Tension

Main: 25

Third: 17

Direction of Rotation: Clockwise

Field Current @ 6 Volts:

Shunt: 1.44-.1.56 Amperes

Third Brush: .89-.94 Amperes

Maximum Cold Output:

31 Amperes; 8.0 Volts @ 4,000 RPM

Maximum Output:

28 Amperes, 8.0 Volts @ 4,200 RPM

Delco-Remy Starting Motor Specifications, Series 40:

Starter #734-Z

Brush Spring Tension: 24-28 Ounces

No Load Test: 65 Amperes, 5.0 Volts @ 5,000 RPM

Lock Test: 525 Amperes, 3.37 Volts; Torque: 12 Ft Lbs

Stromberg Carburetor Adjustments, Series 40:

Carburetor Model: AAV-1

Carburetor Part # A-18681

Code # 7-17

Repair Kit # RK-6

Fuel Level: Fuel should be 1/32" above sight plug hole, engine idling

Throttle Position for Economizer Valve: Controlled by manifold vacuum

Throttle Valve Location for Idle: .022"

Throttle Valve Location for Vacuum Spark Control: .041"

Fast Idle Setting: (Refer to Service Manual)

Choke Unloader Setting: None

Stromberg Carburetor Adjustments, Series 40:

Carburetor Model: AAV-1

Carburetor Part # A-18691

Code # 7-19

Repair Kit # RK-94

Fuel Level: Fuel should be 1/32" above sight plug hole, engine idling

Throttle Position for Economizer Valve: Controlled by manifold vacuum

Throttle Valve Location for Idle: .022"

Throttle Valve Location for Vacuum Spark Control: .041"

Fast Idle Setting: (Refer to Service Manual)

Choke Unloader Setting: None

Buick Century, Series 60, 8 Cylinder

Body Data & Pricing:

4 Door Convertible Phaeton, 5 Passenger, Model 60C

Base Price: $1,713; Shipping Weight: 3,950 Pounds; Production Total: 208

4 Door Trunk Sedan, 5 Passenger, Model 61

Base Price: $1,297; Shipping Weight: 3,780; Production Total: 12,346

2 Door Convertible Coupe, 4 Passenger, Model 66C

Base Price: $1,359; Shipping Weight: 3,815 Pounds; Production Total: 642

2 Door Sport Coupe, 4 Passenger, Model 66S

Base Price: $1,226; Shipping Weight: 3,690 Pounds; Production Total: 1,991

4 Door Sport Sedan, 5 Passenger, Model 67

Base Price: $1,272; Shipping Weight: 3,785; Production Total: 1,515

2 Door Trunk Sedan, 5 Passenger, Model 68

Base Price: $1,256; Shipping Weight: 3,760; Production Total: 1,380

Major Specifications, Buick Century, Model 60

Wheelbase: 126"

Engine Type: Overhead Valve In-Line 8 Cylinder

Engine Bore & Stroke: 3-7/16" X 4-5/16"

Engine Displacement: 320.2 Cu. In.

Compression Ratio: 6.35:1

Taxable Horsepower: 37.81

Horsepower: 141 @ 3,600 RPM

Torque: 269 Ft Lbs @ 2,000 RPM

Carburetor: Stromberg AAV2 or Marvel CD-2

Rear Axle Ratio: 3.90:1

Tire Size: 7.00 X 15; Pressures: 23 Front & 28 Rear

Capacities, Buick Century, Model 60

Cooling System: 17 Quarts

Fuel Tank: 18 Gallons

Engine Oil: 8 Quarts

Grade of Oil: +32 Degrees F & Above, 20

+10 Degrees F & Above, 20W

- 10 Degrees F & Above, 10W

Transmission Capacity: 2-1/2 Pints

Grade of Oil: Summer, 140; Winter, 90

Rear Axle Capacity: 3 Pints

Grade of Oil: Summer, 90; Winter, 90H

Beginning Engine Number, Buick Century, Series 60: 6-3396937

Tune-Up Data, Buick Century, Series 60

Spark Plug Gap: .025"

Spark Plug Type: Champion J-8 or UJ-12 or equivalent

Ignition Point Gap: .015"

Cam Angle: 25 Degrees

Ignition Timing Mark & Location: "ADV" on Flywheel

Firing Order: 16258374

Tappet Clearance, Hot:

Intake: .015" Exhaust: .015"

Cylinder Head Tension: 65-70 Ft Lbs

Valve Data, Buick Century, Series 60

Tappet Clearance, Running Hot:

Intake: .015"

Exhaust: .015"

Tappet Clearance for Timing:

Intake: .015"

Exhaust: .015"

Valve Timing:

Intake Valve Opens: 14 Degrees BTDC

Exhaust Valve Closes: 25 Degrees ATDC

Valve Seat Angle:

Intake: 45 Degrees

Exhaust: 45 Degrees

Minimum Valve Spring Pressure (New Springs):

Inner Spring: 45 Pounds @ 1-5/16"

Outer Spring: 67 Pounds @ 1-19/32"

Valve Stem Clearance:

Intake: .0015"-.0035"

Exhaust: .0021"-.0039"

Piston & Ring Data, Buick Century, Series 60

Pistons Removed from Above

Piston Clearance (Minimum):

Top Land: .021"

Top of Skirt: .002"

Fitting Pistons with Spring Scale:

Shim Thickness to Use: Should fall @ .0015" and hold @ .00225"

Pounds Pull on Scale: Use Shim Thickness Data

Width of Ring End Gap (Minimum):

Compression: .010"

Oil Control: .010"

Clearance Between Ring & Grooves:

Compression: .0015"-.003"

Oil Control: .0015"-.003"

Engine Bearing Data, Buick Century, Series 60

Camshaft End Play: .004"-.008"

Camshaft Bearing Clearance: .0005"-.0035"

Conecting Rod Bearing Journal Diameter: 2.248"-2.249"

Connecting Rod Bearing Clearance: .0008"-.0018"

Connecting Rod End Play: .005"-.010"

Connecting Rod Bearing Tension: 60-65 Ft Lbs

Main Bearing Journal Diameter:

#1: 2.5605"-2.5615" #2: 2.6235"-2.6245" #3: 2.6855"-2.6865"

#4: 2.7485"-2.7495" #5: 2.8105"-2.8115"

Main Bearing Clearance: .0007"-.0022"

Crankshaft End Play: .004"-.008"

Main Bolt Tension: 90-100 Ft Lbs

Brake Data, Buick Century, Series 60

Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded

Length of Lining Per Wheel: 22-11/16"

Width of Lining: 2"

Thickness of Lining: 3/16"

Brake Pedal Free Play: 7/8"

Wheel Alignment Data, Buick Century, Series 60

Caster: - 7/8 Degrees

Camber: +3/8 Degrees

Toe In: 1/32"

Kingpin Inclination: 4 Degrees

Rear Axle Data, Buick Century, Series 60

Ring Gear & Pinion Backlash: .006"-.010"

Drive Pinion Adjustment: Shims

Drive Pinion Bearing Adjustment: None

Axle Shaft End Play: .000"-.008"

Delco-Remy Distributor Specifications, Series 60:

Distributor # 1110801

Cam Angle: 25 Degrees

Point Opening: .015"

Condensor Capacity: .20-.25 Mfds

Breker Arm Spring Tension: 19-23 Ounces

Centrifugal Advance Data:

Advance Starts: 1 Degree @ 250 RPM

Full Advance: 13 Degrees @ 1,500 RPM

Vacuum Advance Data

Inches of Vacuum to Start Plunger Movement: 5-7

Inches of Vacuum for Full Plunger Travel: 10-13

Maximum Vacuum Advance: 5-1/2 Degrees

Delco-Remy Generator Specifications, Series 60:

Generator # 1101053

Brush Spring Tension

Main: 25

Third: 17

Direction of Rotation: Clockwise

Field Current @ 6 Volts:

Shunt: 1.44-.1.56 Amperes

Third Brush: .89-.94 Amperes

Maximum Cold Output:

31 Amperes; 8.0 Volts @ 4,000 RPM

Maximum Output:

28 Amperes, 8.0 Volts @ 4,200 RPM

Delco-Remy Starting Motor Specifications, Series 60:

Starter #727-F

Brush Spring Tension: 24-28 Ounces

No Load Test: 65 Amperes, 5.0 Volts @ 5,500 RPM

Lock Test: 600 Amperes, 3.0 Volts; Torque: 16 Ft Lbs

Buick Roadmaster, Series 80, 8 Cylinder

Body Data & Pricing:

4 Door Convertible Phaeton, 6 Passenger, Model 80C

Base Price: $1,983; Shipping Weight: 4,325 Pounds; Production Total: 350

4 Door Trunk Sedan, 6 Passenger, Model 81

Base Price: $1,645; Shipping Weight: 4,245 Pounds; Production Total: 4,505

4 Door Formal Sedan, 6 Passenger, Model 81F

Base Price: $1,759; Shipping Weight: 4,305 Pounds; Production Total: 247

4 Door Sport Sedan, 6 Passenger, Model 87

Base Price: $1,645; Shipping Weight: 4,245 Pounds; Production Total: 466

Major Specifications, Buick Roadmaster, Model 80

Wheelbase: 133"

Engine Type: Overhead Valve In-Line 8 Cylinder

Engine Bore & Stroke: 3-7/16" X 4-5/16"

Engine Displacement: 320.2 Cu. In.

Compression Ratio: 6.35:1

Taxable Horsepower: 37.81

Horsepower: 141 @ 3,600 RPM

Torque: 269 Ft Lbs @ 2,000 RPM

Carburetor: Stromberg AAV-2 or Marvel CD-2

Rear Axle Ratio: 4.18:1

Tire Size: 7.00 X 16 Inches; Pressures: 25 Front & 30 Rear

Capacities, Buick Roadmaster, Model 80

Cooling System: 17 Quarts

Fuel Tank: 20 Gallons

Engine Oil: 8 Quarts

Grade of Oil: +32 Degrees F & Above, 20

+10 Degrees F & Above, 20W

- 10 Degrees F & Above, 10W

Transmission Capacity: 2-1/2 Pints

Grade of Oil: Summer, 140; Winter, 90

Rear Axle Capacity: 4 Pints

Grade of Oil: Summer, 90H; Winter, 90H

Beginning Engine Number, Buick Roadmaster, Series 80: 8-3396937

Tune-Up Data, Buick Roadmaster, Series 80

Spark Plug Gap: .025"

Spark Plug Type: Champion J-8 or UJ-12 or equivalent

Ignition Point Gap: .015"

Cam Angle: 25 Degrees

Ignition Timing Mark & Location: "ADV" Mark on Flywheel

Firing Order: 16258374

Tappet Clearance, Hot:

Intake: .015" Exhaust: .015"

Cylinder Heat Tension: 65-70 Ft Lbs

Valve Data, Buick Roadmaster, Series 80

Tappet Clearance, Running Hot:

Intake: .015"

Exhaust: .015"

Tappet Clearance for Timing:

Intake: .015"

Ehaust: .015"

Valve Timing:

Intake Valve Opens: 14 Degrees BTDC

Exhaust Valve Closes: 25 Degrees ATDC

Valve Seat Angle:

Intake: 45 Degrees

Exhaust: 45 Degrees

Minimum Valve Spring Pressure (New Springs):

Inner Spring: 45 Pounds @ 1-5/16"

Outer Spring: 67 Pounds @ 1-19/32"

Valve Stem Clearance:

Intake: .0015:-.0035"

Exhaust: .0021"-.0039"

Piston & Ring Data, Buick Roadmaster, Series 80

Piston Removed from Above

Piston Clearance (Minimum):

Top Land: .021"

Top of Skirt: .002"

Fitting Pistons with Sring Scale:

Shim Thickness to Use: Should fall @ .0015" and hold @ .00225"

Pounds Pull on Scale: Use Shim thickness Data

Width of Ring End Gap (Minimum):

Compression: .010"

Oil Control: .010"

Clearance Between Ring & Grooves:

Compression: .0015"-.003"

Oil Control: .0015"-.003"

Engine Bearing Data, Buick Roadmaster, Series 80

Camshaft End Play: .004"-.008"

Camshaft Bearing Clearance: .0005"-.0035"

Connecting Rod Bearing Journal Diameter: 2.248"-2.249"

Connecting Rod Bearing Clearance: .0008"-.0018"

Connecting Rod End Play: .005"-.010"

Connecting Rod Bolt Tension: 60-65 Ft Lbs

Main Bearing Journal Diameter:

#1: 2.5605"-2.5615" #2: 2.6235"-2.6245" #3: 2.6855"-2.6865"

#4: 2.7485"-2.7495" #5: 2.8105"-2.8115"

Main Bearing Clearance: .0007"-.0022"

Crankshaft End Play: .004"-.008"

Main Bolt Tension: 90-100 Ft Lbs

Brake Data, Buick Roadmaster, Series 80

Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded

Length of Lining Per Wheel: 22-11/16"

Width of Lining: 2"

Thickness of Lining: 3/16"

Brake Pedal Free Play: 7/8"

Wheel Alignment, Buick Roadmaster, Series 80

Caster: -7/8 Degrees

Camber: +3/8 Degrees

Toe In: 1/32"

Kingpin Inclination: 4-3/4 Degrees

Rear Axle Data, Buick Roadmaster, Series 80

Ring Gear & Pinion Backlash: .006"-.010"

Drive Pinion Adjustment: Shims

Drive Pinion Bearing Adjustment: None

Axle Shaft End Play: .000"-.008"

Delco-Remy Distributor Specifications, Series 80:

Distributor # 1110801

Cam Angle: 25 Degrees

Point Opening: .015"

Condensor Capacity: .20-.25 Mfds

Breker Arm Spring Tension: 19-23 Ounces

Centrifugal Advance Data:

Advance Starts: 1 Degree @ 250 RPM

Full Advance: 13 Degrees @ 1,500 RPM

Vacuum Advance Data

Inches of Vacuum to Start Plunger Movement: 5-7

Inches of Vacuum for Full Plunger Travel: 10-13

Maximum Vacuum Advance: 5-1/2 Degrees

Delco-Remy Generator Specifications, Series 80:

Generator # 1101053

Brush Spring Tension

Main: 25

Third: 17

Direction of Rotation: Clockwise

Field Current @ 6 Volts:

Shunt: 1.44-.1.56 Amperes

Third Brush: .89-.94 Amperes

Maximum Cold Output:

31 Amperes; 8.0 Volts @ 4,000 RPM

Maximum Output:

28 Amperes, 8.0 Volts @ 4,200 RPM

Delco-Remy Generator Specifications, Series 80:

Generator # 11010535

Brush Spring Tension

Main: 25

Third: 17

Direction of Rotation: Clockwise

Field Current @ 6 Volts:

Shunt: 1.44-.1.56 Amperes

Third Brush: .89-.94 Amperes

Maximum Cold Output:

31 Amperes; 8.0 Volts @ 4,000 RPM

Maximum Output:

28 Amperes, 8.0 Volts @ 4,200 RPM

Delco-Remy Starting Motor Specifications, Series 80:

Starter #727-F

Brush Spring Tension: 24-28 Ounces

No Load Test: 65 Amperes, 5.0 Volts @ 5,500 RPM

Lock Test: 600 Amperes, 3.0 Volts; Torque: 16 Ft Lbs

Buick Limited, Series 90, 8 Cylinder

Body Data & Pricing:

4 Door Trunk Sedan, 8 Passenger, Model 90

Base Price: $2,350; Shipping Weight: 4,608 Pounds; Production Total: 644

4 Door Limousine, 8 Passenger, Model 90L

Base Price: $2,453; Shipping Weight: 4,653 Pounds; Production Total: 410

4 Door Trunk Sedan, 6 Passenger, Model 91

Base Price: $2,077; Shipping Weight: 4,568 Pounds; Production Total: 437

Major Specifications, Buick Limited, Model 90

Wheelbase: 140"

Engine Type: Overhead Valve In-Line 8 Cylinder

Engine Bore & Stroke: 3-7/16" X 4-5/16"

Engine Displacement: 320.2 Cu. In.

Compression Ratio: 6.35:1

Taxable Horsepower: 37.81

Horsepower: 141 @ 3,600 RPM

Torque: 269 Ft Lbs @ 2,000 RPM

Carburetor: Stromberg AAV-2 or Marvel CD-2

Rear Axle Ratio: 4.56:1

Tire Size: 7.50 X 16 Inches; Pressures: 25 Front & 30 Rear

Capacities, Buick Limited, Model 90

Cooling System: 17 Quarts

Fuel Tank: 20 Gallons

Engine Oil: 8 Quarts

Grade of Oil: +32 Degrees F & Above, 20

+10 Degrees F & Above, 20W

- 10 Degrees F & Above, 10W

Transmission Capacity: 2-1/2 Pints

Grade of Oil: Summer, 140; Winter 90

Rear Axle Capacity: 4 Pints

Grade of Oil: Summer, 90H; Winter 90H

Beginning Engine Number, Buick Limited, Series 90: 9-3396937

Tune-Up Data, Buick Limited, Series 90

Spark Plug Gap: .025"

Spark Plug Type: Champion J-8 or UJ-12 or equivalent

Ignition Point Gap: .015"

Cam Angle: 25 Degrees

Ignition Timing Mark & Location: "ADV" Mark on Flywheel

Firing Order: 16258374

Tappet Clearance, Hot:

Intake: .015"

Exhaust: .015"

Cylinder Head Tension: 65-70 Ft Lbs

Valve Data, Buick Limited, Series 90

Tappet Clearance, Running Hot:

Intake: .015"

Exhaust: .015"

Tappet Clearance for Timing:

Intake: .015"

Exhaust: .015"

Valve Timing:

Intake Valve Opens: 14 Degrees BTDC

Exhaust Valve Closes: 25 Degrees ATDC

Valve Seat Angle:

Intake: 45 Degrees

Exhaust: 45 Degrees

Minimum Valve Spring Pressure (New Springs):

Inner Spring: 45 Pounds @ 1-5/16"

Outer Spring: 67 Pounds @ 1-19/32"

Valve Stem Clearance:

Intake: .0015"-.0035"

Exhaust: .0021"-.0039"

Piston & Ring Data, Buick Limited, Series 90

Piston Removed from Above

Piston Clearance (Minimum):

Top of Land: .021"

Top of Skirt: .002"

Fitting Pistons with Spring Scale:

Shim Thickness to Use: Should fall @ .0015" and hold @ .00225"

Pounds Pull on Scale: Use Shim Thickness Data

Width of Ring End Gap (Minimum):

Compression: .010"

Oil Control: .010"

Clearance Between Ring & Grooves:

Compression: .0015"-.003"

Oil Control: .0015"-..003"

Engine Bearing Data, Buick Limited, Series 90

Camshaft End Play: .004"-.008"

Camshaft Bearing Clearance: .0005"-.0035"

Connecting Rod Bearing Journal Diameter: 2.248"-2.249"

Connecting Rod Bearing Clearance: .008"-.018"

Conectng Rod End Play: .005"-.010"

Connecting Rod Bolt Tension: 60-65 Ft Lbs

Main Bearing Journal Diameter:

#1: 2.5605"-2.5615" #2: 2.6235"-2.6245" #3: 2.6855"-2.6865"

#4: 2.7485"-2.7495" #5: 2.8105"-2.8115"

Main Bearing Clearance: .0007:-.0022"

Crankshaft End Play: .004"-.008"

Main Bolt Tension: 90-100 Ft Lbs

Brake Data, Buick Limited, Series 90

Lining Material: Primary Shoe, Woven; Secondary Shoe, Molded

Length of Lining Per Wheel: 26-13/16"

Width of Lining: 2"

Thickness of Lining: 1/4"

Brake Pedal Free Play: 7/8"

Wheel Allignment Data, Buick Limited, Series 90

Caster: - 7/8 Degrees

Camber: +3/8 Degrees

Toe In: 1/32"

Kingpin Inclination: 4-1/2 Degrees

Rear Axle Data, Buick Limited, Series 90

Ring Gear & Pinion Backlash: .006"-.010"

Drive Pinion Adjustment: Shims

Drive Pinion Bearing Adjustment: None

Axle Shaft End Play: .000"-.008"

Delco-Remy Distributor Specifications, Series 90:

Distributor # 1110801

Cam Angle: 25 Degrees

Point Opening: .015"

Condensor Capacity: .20-.25 Mfds

Breker Arm Spring Tension: 19-23 Ounces

Centrifugal Advance Data:

Advance Starts: 1 Degree @ 250 RPM

Full Advance: 13 Degrees @ 1,500 RPM

Vacuum Advance Data

Inches of Vacuum to Start Plunger Movement: 5-7

Inches of Vacuum for Full Plunger Travel: 10-13

Maximum Vacuum Advance: 5-1/2 Degrees

Delco-Remy Generator Specifications, Series 90:

Generator # 1101053

Brush Spring Tension

Main: 25

Third: 17

Direction of Rotation: Clockwise

Field Current @ 6 Volts:

Shunt: 1.44-.1.56 Amperes

Third Brush: .89-.94 Amperes

Maximum Cold Output:

31 Amperes; 8.0 Volts @ 4,000 RPM

Maximum Output:

28 Amperes, 8.0 Volts @ 4,200 RPM

Delco-Remy Generator Specifications, Series 90:

Generator # 1101055

Brush Spring Tension

Main: 25

Third: 17

Direction of Rotation: Clockwise

Field Current @ 6 Volts:

Shunt: 1.44-.1.56 Amperes

Third Brush: .89-.94 Amperes

Maximum Cold Output:

31 Amperes; 8.0 Volts @ 4,000 RPM

Maximum Output:

28 Amperes, 8.0 Volts @ 4,200 RPM

Delco-Remy Starting Motor Specifications, Series 90:

Starter #727-F

Brush Spring Tension: 24-28 Ounces

No Load Test: 65 Amperes, 5.0 Volts @ 5,500 RPM

Lock Test: 600 Amperes, 3.0 Volts; Torque: 16 Ft Lbs

Delco-Remy Regulator Specifications, All Series:

Regulator Type: Voltage

Regulator # 1118213

Ground Polarity: Negative

Voltage to Close Relay Points: 6.3-6.9 Volts

Amperage to Open Relay Points: 0-4.0 Amperes

Maximum Operating Voltage (Hot): 7.0-7.1 Volts

Stromberg Carburetor Adjustments, Series 60, 80, & 90:

Carburetor Model: AAV-2

Carburetor Part # A-18682

Code # 7-18

Repair Kit # RK-7

Fuel Level: Fuel should be 1/32" above sight plug hole, engine idling

Throttle Position for Economizer Valve: Controlled by manifold vacuum

Throttle Valve Location for Idle: .022"

Throttle Valve Location for Vacuum Spark Control: .055"

Fast Idle Setting: (Refer to Service Manual)

Choke Unloader Setting: None

Stromberg Carburetor Adjustments, Series 60, 80, & 90:

Carburetor Model: AAV-2

Carburetor Part # A-18692

Code # 7-20

Repair Kit # RK-95

Fuel Level: Fuel should be 1/32" above sight plug hole, engine idling

Throttle Position for Economizer Valve: Controlled by manifold vacuum

Throttle Valve Location for Idle: .022"

Throttle Valve Location for Vacuum Spark Control: .055"

Fast Idle Setting: (Refer to Service Manual)

Choke Unloader Setting: None

Fuel Pump Data:

1938 Series 40:

Pump Model: W

Maximum Pressure: 3-1/2 PSI

1938 Series 60, 80, & 90:

Pump Model AB

Maximum Pressure: 4-1/2 PSI

Dash Gauge Manufacturer:

Gasoline, Oil Pressure, Temperature, & Ammeter: AC

1938 Buick Beginning Serial Numbers, All Series:

1-3219848, Flint Michigan

2-3238767, Southgate, California

3-3245765, Linden, New Jersey

Popular Options, All Series:

Automatic Safety Transmission, Heater, Dual Side Mounts, Single Side Mount, Fog Lights, White Side Wall Tires, Defroster, Radio, Grille Guard, Ivory Plastic Steering Wheel, Electric Clock (Special Only).

1938 Buick Historical Data:

Model Year introduction of the 1938 Buick was in October, 1937.

Model Year Production: 168,689

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