Mazda MX-5 1990 Workshop Manual page 793

TECHNICAL DATA
TD
Item
I
Specification
Air cleaner
Element type
I
Oil permeated
Accelerator cable
Free play mm (in)
I
1-3 (0.039-0.118)
Fuel
Specification
I
Unleaded regular (RON 87 or higher)
G. ENGINE ELECTRICAL SYSTEM
Item
Engine model
86 DOHC
Battery
Voltage
V 12, Negative ground
Type and capacity (5-hour rate)
S46A24L(S) (32Ah) Maintenance-free
Dark current
*
mA 20.0
Type A.C.
Output V-A 12-60
Regulator type Transistorized (built-in IC regulator)
Alternator
Regulated voltage 14.1-14.7
Brush length mm (in)
Standard
21.5 (0.85)
Minimum 8 (0.31)
Drive belt tension mm (in)
New 8-9 (0.31-0.35)
Used
9-10 (0.35-0.39)
Type Conventional
Starter
Output V-kW 12-0.95 (Others)
Brush length mm (in)
Standard 17.0 (0.67)
Minimum 11.5 (0.45)
Type
Electronic spark advance (ESA)
Ignition system
Spark advance control Engine control unit controls sparks advance
Ignition timing
BTDC 10
0
± 1
0
(Test connector grounded)
Type Molded
Ignition coil
Primary coil winding
kO
0.78-0.94
Secondary coil winding kfl 11.2-15.2
NGK: BKR5E-11 NIPPON DENSO: K16PR-U11
Type
Spark plug
Plug gap
mm (in)
Firing order
*
Dark current is the constant flow of current while the ignition switch is OFF.
(i.e. engine control unit, audio etc.)
H.CLUTCH
Item
Engine model
-
Clutch control
Clutch pedal
Type
Pedal ratio
Full stroke mm (in)
Height (with carpet) mm (in)
Free play
mm (in)
Distance to carpet when clutch
mm (in)
I
Minimum
fully disengaged
Flywheel
Runout limit mm (in)
Clutch disc
Type
BKR6E-11 K20PR-U11
BKR7E-11
K22PR-U11
1.0-1.1 (0.039-0.043)
1-3-4-2
86 DOHC
Hydraulic
Suspended
6.13
120 (4.72)
175-185 (6.89-7.28)
0.6-3.1 (0.02-0.12)
68 (2.68)
0.2 (0.008)
Single dry plate
TD-7