Isuzu 4JB1 User Manual

00 – 30 SERVICE INF
ORMATION
MA
IN DATA AND SPECIFICATIONS
M
AIN DATA AND SPECIFICATIONS
Item
Engine Model
4J
B1 / 4JB1T / 4JB1TC 4JG2 (G. EXP & EC)
Engine ty
pe Four-cycle, overhead valve, water cooled
Com
bustion chamber type Direct injection In direct injection
Cy
linder liner type Dry type, chrome plated, stainless steel tube
T
iming train system Gear drive Gear and Belt Drive
No. of
cylinders - Bore x stroke mm (in) 4 - 93 x 102
(3.66 x 4.02)
4 - 95.4 x 107
(3.76 x 4.21)
No. of
piston rings Compression rings: 2 / Oil ring: 1
T
otal piston displacement cm
3
(i
n
3
)
2,771 (169.0) 3,059 (186.6)
Com
pression ratio (to 1) 18.2 (4JB1)
18.1 (4JB1T/4JB1TC)
20.1
Com
pression pressure kPa (kg/cm
2
/ps
i) 3,038 (31 / 441) 3,334 (34 / 483.8)
(For EC 2,363 (24.1 / 531))
Engine w
eight (Dry) N (kg/lb) Approximately
2,245 (229 / 505) (4JB1)
2,511 (256 / 564)
(4JB1T/4JB1TC)
Approximately
2,403 (245 / 540)
F
uel injection order 1 - 3 - 4 - 2
F
uel injection timing deg BTDC 14 (4JB1)
BTDC 12 (’91/542A) (4JB1)
BTDC 11 (4JB1T)
BTDC 4 (4JB1TC)
ATDC 1 (Belt ’91/542A)
TDC 0° (Belt ’91/542B)
ATDC 2 (Gear ’91/542A)
Spec
ified fuel type SAE No. 2 diesel fuel
Idling s
peed rpm 750 - 790 700 – 740
Valve c
learances (At cold): Intake mm(in) 0.40 (0.016)
Ex
haust mm(in) 0.40 (0.016)
Valve c
learances (At hot): Intake mm(in) 0.45 (0.018)
Ex
haust mm(in) 0.45 (0.018)
Intak
e valves Open at (BTDC) deg 24.5
Clos
e at (ATDC) deg 55.5
Ex
haust valves Open at (BTDC) deg 54
Clos
e at (ATDC) deg 26
NOT
E: G.EXP : General Export Model
EC : European Countries
Emission Gas Control Standard
’91/542A : Euro 1
’91/542B : Euro 2

Isuzu 4JB1 Specifications

General

Brand	Isuzu
Model	4JB1
Category	Engine
Language	English