Mazda 323 1988 Workshop Manual page 1028

30
TECHNICAL DATA
IB. ENGINE (B6 DOHC TURBO)
Engine model
Item
B6 DOHC TURBQ
TYPO
Gasoline, 4.cycle
Number and arrangement of cylinders 4.cylinders, in-line
Type of combustion chamber Pent-roof
Valve system DOHC, belt-driven 16 valves
Bore x Stroke mm (in) 76 x 83.6 (3.07 x 3.29)
Total piston displacement cc (w-in) 1,597 (97.4)
Compression ratio
/ Standard
I
7.9
1,079 (11 .O, 156).300
Compression pressure Minimum
kpa (kg/cm', Psi)-rPm
I
755 (7.7, 109).300
Maximum difference
hP+WCAPn
196 (2.0, 28)
Open BTDC 50
Close AEDC
510
Open BBDC
69O
Close BTDC 10
Valve clearance
IN
Valve length mm (in)
EX
Valve stem diameter IN
mm (in) Ex
Guide inner diameter
Valve stem to guide
clearance
Standard
Minimum
Standard
Minimum
Standard
Standard
mm (in)
5.965-5.980 '- -- '.
6.01-6.03 I
0.025-0.060 (O.OOlC
0.030
--- .- ^^.
.~~
Seat contact width
Seat sinking
Valve spring
Free Length of valve spring
mm (in)
Standard
I
47.2 (1.8581
Minimum
45.6 (1.603)
30-6