Mazda MX-5 Miata (1997+). Manual - part 62

 

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Mazda MX-5 Miata (1997+). Manual - part 62

 

 

CYLINDER BLOCK 

CYLINDER BLOCK 

CYLINDER HEAD 

CYLINDER HEAD 

No. 2

End Gap

Standard

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

Maximum

.039 (1.0)

Side Clearance

Standard

.0012-.0027 (.030-.070)

Maximum

.006 (.15)

No. 3 (Oil)

End Gap

Standard

.008-.027 (.20-.70)

Maximum

.039 (1.0)

Application

In. (mm)

Cylinder Bore

Standard

3.2678-3.2684 (83.000-

83.019)

Oversize

.010" (0.25 mm)

3.2778-3.2780 (83.256-

83.263)

.020" (0.50 mm)

3.2877-3.2879 (83.506-

83.513)

Maximum Taper & Out-Of-Round

.0007 (.019)

Minimum Deck Height 

(1)

 

8.720 (221.5)

Maximum Deck Warpage

.006 (.15)

(1)

DO NOT machine more than .008" (.20 mm) from cylinder block deck surface.

Application

Specification

Cylinder Head

Height

5.268-5.275" (133.8-134.0 mm)

Grinding Limit

.004" (.10 mm)

Maximum Warpage

.004" (.10 mm)

Valve Seats

Intake Valve

Seat Angle

45°

Seat Width

.032-.055" (0.80-1.40 mm)

 

1997 Mazda MX-5 Miata 

1997-98 ENGINES 1.8L 4-Cylinder

  

VALVES & VALVE SPRINGS 

VALVES & VALVE SPRINGS 

Exhaust Valve

Seat Angle

45°

Seat Width

.032-.055" (0.80-1.40 mm)

Valve Guides

Intake Valve

Valve Guide I.D.

.2367-.2374" (6.01-6.03 mm)

Valve Guide Installed

Height

.721-.744" (18.3-18.9 mm)

Valve Stem-To-Guide Oil Clearance

Standard

.0010-.0023" (.025-.060 mm)

Maximum

.008" (.20 mm)

Exhaust Valve

Valve Guide I.D.

.2367-.2374" (6.01-6.03 mm)

Valve Guide Installed

Height

.721-.744" (18.3-18.9 mm)

Valve Stem-To-Guide Oil Clearance

Standard

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

Maximum

.008" (.20 mm)

Application

Specification

Valves

Face Angle

45°

Installed Height

Normal

1.772-1.791" (45.00-45.50 mm)

Serviceable

1.733-1.772" (45.60-46.50 mm)

Minimum Margin

Intake

.035" (0.9 mm)

Exhaust

.039" (1.0 mm)

Refinish Length

Miata

Intake

Standard

4.0114" (101.89 mm)

Minimum

3.9524" (100.39 mm)

Exhaust

Standard

4.0153" (101.99 mm)

Minimum

3.9563" (100.49 mm)

Protege

Intake

 

1997 Mazda MX-5 Miata 

1997-98 ENGINES 1.8L 4-Cylinder

  

CAMSHAFT 

CAMSHAFT 

Standard

3.9741-4.0055" (100.94-

101.74 mm)

Minimum

3.9701" (100.84 mm)

Exhaust

Standard

3.9780-4.0094" (101.04-

101.84 mm)

Minimum

3.9661" (100.74 mm)

Stem Diameter

Intake

Standard

.2351-.2356" (5.970-5.985 mm)

Minimum

.2331" (5.920 mm)

Exhaust

Standard

.2349-.2354" (5.965-5.980 mm)

Minimum

.2329" (5.915 mm)

Valve Springs

Free Length 
1.821" (46.26 mm)
Maximum Out-Of-Square 
.064" (1.62 mm)

Lbs. @ In. (kg @ mm)

Compressed Length

Minimum

51-55 @ 1.555 (23-25 @ 39.50)

Application

In. (mm)

End Play

Standard

.0028-.0074 (.07-.19)

Maximum

.008 (.20)

Journal Diameter

1.0213-1.0222 (25.940-25.965)

Maximum Journal Out-Of-Round

.0012 (.03)

Maximum Journal Runout

.0012 (.03)

Journal Oil Clearance

Standard

.0014-.0031 (.035-.081)

Maximum

.006 (.15)

Lobe Height

Standard

Intake

1.7360 (44.094)

Exhaust

1.7559 (44.600)

Minimum

 

1997 Mazda MX-5 Miata 

1997-98 ENGINES 1.8L 4-Cylinder

  

VALVE LIFTERS 

VALVE LIFTERS 

Intake

1.7281 (43.894)

Exhaust

1.7480 (44.400)

Application

In. (mm)

Bore Diameter

1.1811-1.1821 (30.000-30.025)

Lifter Diameter

1.1795-1.1802 (29.959-29.975)

Oil Clearance

Standard

.0010-.0026 (.025-.066)

Maximum

.0071 (.180)

 

1997 Mazda MX-5 Miata 

1997-98 ENGINES 1.8L 4-Cylinder

  

 

 

 

 

 

 

 

Content   ..  60  61  62  63   ..