From 1988 to 1998, a Japanese factory assembled the 2.8-liter Isuzu 4JB1 diesel engine, which was installed on well-known concern models like the Trooper, Wizard, and Faster pickup truck. Many Chinese companies have now mastered the production of clones of this unit.
Diesels 4JB1, 4JX1, 4JG2, 4JJ1, and 4JJ3 are also part of the J-engine line.
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
Although Zexel fuel equipment operates for a long time, there are issues with its spare parts; these are very dependable diesel engines, analogues of which are frequently used in industry;
Keep an eye on the timing belt’s condition; if it breaks, at least the rods will bend; occasionally it breaks the crankshaft’s keyway and cuts off the oil pump’s gears;
The regulations mandate that the valves’ thermal clearances be changed every 40,000 kilometers.