Home Cummins R2.8 Engine (ISF2.8)

Cummins R2.8 Engine (ISF2.8) Specs, Problems & Reliability

The R2.8 (or ISF2.8) engine is a four-cylinder turbocharged diesel engine, the smallest and lightest engine of the ISF engine family. The Cummins ISF2.8 is a modern engine that combines two main qualities - power and compactness. It is an optimum choice of a power unit for light commercial vehicle applications such as pickups, trucks, vans, utility vehicles.

The Cummins R2.8 engine has a cast iron cylinder block with liners that can be replaced. This gave high strength with less metal use. Low-cost traditional material provides long-term reliability and repair possibility. The ISF2.8 has a cast iron cylinder head also. There are four valves per cylinder, a chain-driven single overhead camshaft, and fuel injection nozzles in the middle of each cylinder. The camshaft actuates valves by rocker arms (short ones are for intake valves and long - for exhaust valves). All valves are made of heat-resistant steel and have a chrome-plated stem. The intake and exhaust valves look the same, but they are not interchangeable. The timing chain and tensioner are located on the flywheel side. The chain does not require maintenance for the entire life of the engine.

The 2.8L diesel has a high-end electronically controlled Common Rail fuel injection. This system is fed by the high-pressure fuel pump mounted on the front end of the engine. The fuel pump is driven by a camshaft through a gear. The ISF2.8 comes with HE 200 WG turbocharger without an intercooler. This diesel is equipped with start-up relief devices at low temperatures. An electric spiral provides heat air for the intake manifold.

Engine Specs

Columbus, Indiana; China
Production years
Cylinder block material
Cast Iron
Cylinder head material
Cast Iron
Fuel type
Fuel system
Common rail direct injection
Number of cylinders
Valves per cylinder
Valvetrain layout
Bore, mm
94.0 (3.70 in)
Stroke, mm
100.0 (3.94 in)
Displacement, cc
2,781 cc (171 cu in)
Type of internal combustion engine
Four-stroke, turbocharged
Compression Ratio
Power, hp
107-160 hp (80-120kW)/ 3,600
Torque, lb ft
206-265 lb-ft (280-360 Nm)/ 1,500-3,000
Engine weight
214 kg (503 lbs)- dry weight
Firing order
Engine oil weight
SAE 15W-40
Engine oil capacity, liter
5.0 - oil pan;
0.436 - oil filter;
1.0 - one mark on the engine oil dipstick.
Oil change interval, mile
12,000 (20,000 km)/12 months
Foton Tunland pickup, GAZelle NEXT, commercial vehicles.

Cummins R2.8, ISF2.8 Engine Problems and Reliability

The ISF2.8 is built and assembled in China. Cummins says what the ISF2.8 engine has 300,000 miles (500,000 km) longevity. But in reality, this engine has a terrible reputation in the Asian market because of its low-quality assembling and materials. The most common failure of this engine is the quick wearing of cylinder walls. As a result, increased oil consumption. The next problem is bad connecting rod bearings damaging a crankshaft. Besides that, the engine is easy to overheat. There is a high risk of coolant penetration inside cylinders. The list goes on and on. The ISF 2.8 engine meets Euro 3, Euro 4 emission standards, depending on modifications.

The R2.8 is built in the Cummins factory in Columbus, Indiana (500 engines in 2017) and only carries a 90-day warranty. They use engine blocks machined at Cummins's Chinese plant. The crate R2.8 engine meets EPA's Tier 0 (LDT 1 and 2) and Tier 1 emissions standards. In this case, it is suitable only for vehicles produced until 1999.