Specifications
| Production years | 1988-1998 |
| Displacement, cc | 2771 |
| Fuel system | direct injection |
| Power output, hp | 87 – 90 95 – 115 (4JB1T or 4JB1-TC) |
| Torque output, Nm | 180 – 185 220 – 235 (4JB1T or 4JB1-TC) |
| Cylinder block | cast iron R4 |
| Block head | cast iron 8v |
| Cylinder bore, mm | 93 |
| Piston stroke, mm | 102 |
| Compression ratio | 18.2 18.1 (4JB1T or 4JB1-TC) |
| Features | OHV OHV, intercooler (4JB1T or 4JB1-TC) |
| Hydraulic lifters | yes no (4JB1T or 4JB1-TC) |
| Timing drive | gears belt (4JB1T or 4JB1-TC) |
| Phase regulator | no |
| Turbocharging | no IHI RHB5 or RHF4 (4JB1T or 4JB1-TC) |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 4.2 |
| Fuel type | diesel |
| Euro standards | EURO 1 EURO 2/3 (4JB1T or 4JB1-TC) |
| Fuel consumption, L/100 km (for Isuzu MU 1994) — city — highway — combined |
10.1 7.0 8.7 |
| Engine lifespan, km | ~450 000 |
| Weight, kg | 240 |
The engine was installed on:
- Isuzu Faster 3 (TF) in 1992 – 1998;
- Isuzu MU 1 (UC) in 1989 – 1998;
- Isuzu Trooper 1 (UB1) in 1988 – 1991;
- Isuzu Wizard 1 (UC) in 1992 – 1998;
- Opel Frontera A (U92) in 1995 – 1996.
Disadvantages of the Isuzu 4JB1 engine
- These are very reliable diesel engines, analogues of which are often used in industry;
- Zexel fuel equipment runs for a long time, but there are problems with its spare parts;
- Monitor the condition of the timing belt, or if it breaks, at least the rods will bend;
- Sometimes it cuts off the gears of the oil pump and breaks the keyway on the crankshaft;
- According to the regulations, the thermal clearances of the valves must be adjusted every 40,000 km.
