VW/Audi 2.5 R5 TDI Engine Specs, Problems, Reliability

VW/Audi 2.5 R5 TDI Engine Specs, Problems, Reliability. This engine is the 2.5-liter 5-cylinder inline turbo diesel engine with pump injection system. Its life began in 1989. The engine was developed and developed by Audi, and it was the very first Turbocharged Direct Injection engine in the production. The main development objective was to use the engine in different designs.

VW Audi 2.5 R5 TDI Engine Specs

The cylinder block is made from gray cast iron. It has six main bearings and created steel crankshaft. Aluminum pistons have bowl-shaped geometry. On top of a block, there is the aluminum 10-valve cylinder head (2 valves per cylinder). There is only one camshaft (SOHC), which is driven by timing belt. The valvetrain is equipped with hydraulic tappets/lifters for automatic valve clearance compensation.

VW/Audi 2.5 R5 TDI Engine Specs, Problems, Reliability

The fuel shipment system includes the belt-driven Bosch VP37 electronic distributor injection pump and two-stage direct injection (DI) with five-hole injector nozzles. The engine is turbocharged. There is Garrett variable geometry turbocharger (VTG), cast aluminum consumption manifold, and no intercooler.

The engine was very successful. It was rather easy yet, didn’t have advanced systems and electronics. It was simple to tune and maintain. The longevity is incredible with appropriate operation. The fuel intake is pretty low for this size of displacement.

Read:  VW/Audi 1.0 TSI EA211 Engine Specs, Problems, Reliability

R5 diesel engines likewise were being installed into Volvo automobiles. The new generation of 2.5 R5 diesel engines started in 2004 from the production of 2.5 R5 TDI PD and 2.5 R5 TDI CR.

VW/Audi 2.5 R5 TDI Engine Problems and Reliability

The VW/Audi 2.5 R5 TDI engines are not as resilient as the previous version. It is a quite excellent engine and extremely reliable if you do the upkeep well (400-500k hassle-free miles). Some peoples had cylinder head and camshaft problems, however more frequently because of using the wrong oil. Some engines had the rubber seals use slots in the fuel chamber around the injector and leak diesel fuel into the oil and drop pressure.

Read:  Subaru FA20/FA20DIT 2.0L Engine: Specs, Problems, Reliability

you must see more engine detail in here:  Engine – US Cars News or you can see on wiki here

VW/Audi 2.5 R5 TDI Engine Specs

Manufacturer Audi
Production years 1989-2004
Cylinder block material Cast Iron
Cylinder head material Aluminum
Fuel type Diesel
Fuel system Bosch VP37 pump, two-stage direct injection
Configuration Inline
Number of cylinders 5
Valves per cylinder 2
Valvetrain layout SOHC
Bore, mm 81.0 (3.19 in)
Stroke, mm 95.5 (3.76 in)
Displacement, cc 2,461 cc (150.2 cu in)
Type of internal combustion engine Four-stroke, turbocharged
Compression Ratio 19:1
Power, hp 88-165 hp /3,500-4,000
Torque, lb ft 144-229 lb-ft /1,900-2,500
Engine weight
Firing order 1-2-4-5-3
Engine oil weight VW 505.00, VW 506.00, 10W40, 5W40
Engine oil capacity, liter 5.5 (6.0 – with oil filter)
Oil change interval, mile 6,000 (10,000 km) or 12 month
Applications Volkswagen Transporter (T4), Volkswagen LT, Audi C3 100, Audi C4 100, Audi C4 A6, Volvo 850, Volvo S70, Volvo V70, Volvo S80
Read:  Mazda 1.5 SkyActiv-G Engine Specs, Problems, and Reliability

VW/Audi 2.5 R5 TDI Engine Modifications

  • 88 hp (65 kW); 144 lb ft (195 Nm)/ 1,900 rpm – that is Volkswagen Transporter T4 engine.
  • 102 hp (75 kW); 184 lb ft (250 Nm)/ 1,900 rpm – more effective engine version for Volkswagen Transporter T4.
  • 109 hp (80 kW); 195 lb ft (265 Nm)/ 1,900 rpm – Volkswagen LT engine.
  • 116 hp (85 kW); 195 lb ft (265 Nm)/ 1,900 rpm – application: Audi C3 100, Audi C4 100.
  • 140 hp (103 kW); 214 lb ft (290 Nm)/ 1,900 rpm – extensively used engine. Application: Audi C4 100, Audi C4
  • A6, likewise known as Volvo D5252T engine: Volvo 850, Volvo S70, Volvo V70, early Volvo S80s.
  • AHY, AXG – 151 hp (111 kW); 218 lb ft (295 Nm)/ 1,900 rpm. That is the leading Volkswagen Transporter (T4) engine.