Miata Torque Specifications

(Originally compiled by the San Diego Miata Club)

Except where noted, all torque specifications listed are in Foot-pounds / Newton-meters.

General

Spark plugs	11-17 (132-204 in-lbs)
Engine oil drain plug (19mm)	22-30/31-41
Gearbox drain plug (24mm)	29-43/39-59
Gearbox fill plug (square)	18-29/25-39
Differential drain plug (24mm)	29-40/39-54
Differential fill plug (23mm)	29-40/39-54
Wheel lug nuts	66-86/89-117

Suspension

Swaybar bushing bolts,

front
rear

13-20/18-26
14-21/20-28

Swaybar end link bolts, both ends

27-40/36-54

Upper shock mount plate bolts

22-27/29-36

Upper shock nuts

23-34/31-46

Lower shock bolt

54-69/73-93

Lower control arm bolt, front

54-69/73-93

Spindle (vertical) bolt

54-69/73-93

Camber adjustment bolts, (D or H-style)

front
rear

69-83/94-112
54-70/73-95

Brakes

Front/rear bracket bolts

36-51/49-69

Caliper bolts - (Note: Some have reported stripping bolts. See thread.)

front
rear

58-65/78-88
25-29/34-39

Front/rear banjo bolts

16-22/22-29

Rear adjuster plug bolt

9-12/12-16

Engine & Cooling

Crank pulley main bolt (1990 - early 1991)	80-87/108-118 (plus Loctite 242-blue)
Crank pulley main bolt (late 1991 - present)	116-122/157-165 (plus Loctite 242-blue)
Crank pulley bolts - 4	109 - 151 in-lbs
Cam cover bolts (must be done in correct order)	43-78 in-lbs
Alternator mounting bolt	27-38/37-52
Alternator tension adjustment bolt	14-19/19-25
Water pump - 4 bolts to block	14-19/19-25
Water pump pulley - 3 bolts	69-95 in-lbs
Water inlet pipe - 2 bolts to water pump	14-19/19-25
Radiator - upper bolts	14-19/19-25
Thermostat cover - 2 bolts	14-19/19-25
Timing belt tensioner bolt & idler pulley bolt	28-38/38-52
Timing belt cover bolts	69-95 in-lbs
Cylinder head bolts (must be done in stages and in correct order.)	56-60/76-81

Intake / Exhaust

Airflow meter bolts	69-95 in-lbs
Intake manifold bracket	27-40/36-54
O2 sensor	by feel, as close to 22-36 ft-lbs as possible
Exhaust pipe clamp bolt (to bell housing)	15-20/21-27
Bell housing bolts	48-65/65-88
Exhaust header nuts	28-34/38-46
Cat converter nuts (both ends)	30-41/40-55

Clutch

Transmission front cover bolts	14-18/19-24
Flywheel bolts	71-75/96-102
Pressure plate bolts	14-19/19-25
Bell housing bolts	48-65/65-88
Prop shaft nuts	20-22/27-30
Power plant frame bolts	77-91/104-123
Starter motor bolts	28-38/38-51
Starter motor mounting bracket bolts	28-38/38-51
Slave cylinder fluid tube	9-16 (113-190 in. lbs.)
Slave cylinder mounting bolts	12-16/16-22

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28 March, 2020

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