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Mazda MX-5 Miata (1997+). Manual - part 61

Fig. 23: Aligning Marks On Inner & Outer Rotor
Courtesy of MAZDA MOTORS CORP.

TORQUE SPECIFICATIONS

Application

Ft. Lbs. (N.m)

Axle Shaft Nut (Protege)

174-235 (235-319)

Camshaft Sprocket Bolt

36-45 (49-61)

Compressor Bracket-To-Engine Bolt

28-38 (38-51)

Connecting Rod Cap Nut

35-37 (48-50)

Crankshaft Pulley Bolts

9-13 (12-18)

Crankshaft/Timing Belt Sprocket Bolt

116-123 (157-167)

Crossmember-To-Frame Bolt

47-66 (63-89)

Cylinder Head Bolt

(2)

56-60 (76-81)

Distributor Bolt

14-19 (19-26)

Drive Shaft Bolts (Miata)

37-43 (50-58)

Engine Mount Nut

42-58 (57-79)

Engine Mount-To-Engine Bolt

27-40 (37-54)

Engine Mount-To-Frame Nut

Miata

42-57 (57-77)

Protege

28-38 (38-51)

Exhaust Header Pipe-To-Exhaust

1997 Mazda MX-5 Miata

1997-98 ENGINES 1.8L 4-Cylinder

ENGINE SPECIFICATIONS

GENERAL SPECIFICATIONS

Manifold Nut

23-34 (31-46)

Exhaust Manifold Nut

(1)

28-34 (38-46)

Flywheel Bolt

71-76 (96-103)

Fuel Rail Bolt

14-19 (19-26)

Generator Top Bolt

27-38 (37-51)

Intake Manifold Bolt/Nut

(1)

14-19 (19-26)

Intake Manifold Support Bracket

14-18 (19-25)

Main Bearing Cap Bolt

Step 1

(1)

22-27 (30-37)

Step 2 (Final)

(1)

40-43 (54-58)

Oil Pan-To-Transaxle Bolt (Protege)

28-38 (38-51)

Oil Pan-To-Transmission Bolt (Miata)

48-65 (64-88)

Oil Pump-To-Block Bolt

14-19 (19-26)

Power Steering Pump-To-Bracket Bolt

28-38 (38-51)

PPF/Differential Spacer Mounting Bolt

(2)

27-38 (37-51)

PPF-To-Differential Long Mounting Bolt

(2)

77-91 (104-123)

PPF-To-Transmission Side Mounting Bolt

(2)

77-91 (104-123)

PPF/Transmission Rear Bracket Mounting Bolt

27-40 (37-54)

Spark Plug

11-16 (15-22)

Timing Belt Tensioner Bolt

27-38 (37-51)

Water Pump Bolt

14-19 (19-26)

INCH Lbs. (N.m)

Camshaft Bearing Cap Bolt

(3)

100-125 (11.3-14.1)

Cylinder Head Cover Bolt

43-78 (5-9)

Oil Jet

104-156 (12-18)

Oil Pan-To-Engine Block Bolt

(Miata & Protege)

70-95 (8-11)

Oil Pump Cover Screws

53-78 (6-9)

Oil Strainer Bolt

70-95 (8-11)

Rear Cover Bolt

70-95 (8-11)

Water Pump Pulley Bolt

70-95 (8-11)

(1)

Tighten evenly to specification in alternating sequence.

(2)

Tighten in sequence. See Fig. 7 .

(3)

Tighten in sequence. See Fig. 10 or Fig. 11 .

1997 Mazda MX-5 Miata

1997-98 ENGINES 1.8L 4-Cylinder

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

CONNECTING RODS

Application

Specification

Displacement

112.2 Cu. In. (1.8L)

Bore

3.27" (83.0 mm)

Stroke

3.35" (85.0 mm)

Compression Ratio

Miata

9.0:1

Protege

8.9:1

Fuel System

PFI

Horsepower @ RPM

Miata

128 @ 6500

Protege

103 @ 5500

Torque Ft. Lbs. @ RPM

Miata

110 @ 5000

Protege

111 @ 4000

Application

In. (mm)

Crankshaft

End Play

Standard

.0032-.0111 (.080-.282)

Maximum

.0118 (.30)

Maximum Runout

.0016 (.04)

Main Bearings

Journal Diameter

Standard Bearings

1.9661-1.9667 (49.938-49.956)

Journal Out-Of-Round

.002 (.05)

Oil Clearance

Standard

.0008-.0014 (.020-.036)

Maximum

.004 (.10)

Connecting Rod Bearings

Journal Diameter

Standard Bearings

1.7693-1.7699 (44.940-44.956)

Journal Out-Of-Round

.002 (.05)

Oil Clearance

Standard

.0008-.0027 (.020-.068)

Maximum

.0039 (.100)

1997 Mazda MX-5 Miata

1997-98 ENGINES 1.8L 4-Cylinder

CONNECTING RODS

PISTONS, PINS & RINGS

Application

In. (mm)

Bore Diameter

Crankpin Bore

1.8898-1.8904 (48.000-

48.016)

Pin Bore

.7876-.7879 (20.003-20.014)

Center-To-Center Length

5.231-5.234 (132.85-132.95)

Maximum Bend

(1)

Side Play

Standard

.0044-.0103 (.110-.262)

Maximum

.012 (.30)

(1)

Bend must not exceed .003" per 1.97" (.075 mm per 50 mm).

Application

In. (mm)

Pistons

Clearance

Standard

Miata

.0013-.0023 (.032-.059)

Protege

.0010-.0014 (.024-.037)

Maximum

.006 (.15)

Diameter

Standard

3.2660-3.2666 (82.954-82.974)

Oversize

.010" (0.25 mm)

3.2761-3.2762 (83.211-

83.217)

.020" (0.50 mm)

3.2859-3.2860 (83.461-

83.467)

Pins

Diameter

.7869-.7871 (19.987-19.993)

Piston Fit

-.0002-.0005 (-.005-.013)

Rings

No. 1

End Gap

Standard

.006-.011 (.15-.30)

Maximum

.039 (1.0)

Side Clearance

Standard

.0012-.0025 (.030-.065)

Maximum

.006 (.15)

1997 Mazda MX-5 Miata

1997-98 ENGINES 1.8L 4-Cylinder

Content .. 59 60 61 62 ..