Description
The Toyota Quantum 2.5 D-4D is the South African-market version of the Toyota HiAce/KDH200-series van. Its 2.5-liter diesel engine is the 2KD-FTV, a 4-cylinder turbocharged common-rail diesel. The commonly associated rear-wheel-drive manual transmission for KDH200-series 2KD-FTV applications is the Toyota R351 5-speed manual gearbox. Toyota’s transmission classification documents specifically pair KDH200/KDH202/KDH212/KDH220/KDH222 2KD-FTV HiAce/Quantum applications with the R351.
| Gear | Ratio |
|---|---|
| 1st | 4.313:1 |
| 2nd | 2.330:1 |
| 3rd | 1.436:1 |
| 4th | 1.000:1 |
| 5th | 0.838:1 |
| Reverse | 4.220:1 |
Toyota Quantum 2.5 D-4D — 2KD-FTV + R351 5MT
Vehicle: Toyota Quantum / HiAce
Engine: 2KD-FTV
Displacement: 2,494 cc
Cylinders: 4
Configuration: Inline 4
Valves: 16
Valve train: DOHC
Fuel: Diesel
Injection: Common-rail direct injection
Turbocharger: Yes
Intercooler: Yes, depending on version
Bore: 92 mm
Stroke: 93.8 mm
Timing: Timing belt
Power: Approximately 75–88 kW depending on specification
Typical Quantum output: 75 kW / ~102 PS
Torque: Approximately 200–260 Nm depending on specification
Typical Quantum torque: 260 Nm
Transmission: R351 5-speed manual
1st: 4.313:1
2nd: 2.330:1
3rd: 1.436:1
4th: 1.000:1
5th: 0.838:1
Reverse: 4.220:1
Gearbox type: Constant-mesh 5-speed manual
1st/2nd synchro: Triple-cone on 2KD-FTV R351 application
Gearbox oil: SAE 75W-90; approximately 2.6 L for the referenced R-series specification
Drivetrain: Front-engine, rear-wheel drive
Transfer case: None on the standard RWD Quantum
Fuel tank: Approximately 70 L on the referenced Quantum specification.
For the Toyota Quantum 2.5 D-4D, the key combination to look for is:
2KD-FTV 2.5L turbo diesel + R351 5-speed manual gearbox + matching ECU/wiring.
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