What is 12 valve engine?

The 12-valve Cummins, officially the Cummins 6BT, is the engine at the bottom of the family tree of diesel engines (at least in pickup trucks). Its simple, straightforward design is a symbol of reliability, solid engineering and tractor-style torque.

What does sequential MPI mean?

Sequential fuel injection, also called sequential port fuel injection (SPFI) or timed injection, is a type of multiport injection. Though basic MPFI employs multiple injectors, they all spray their fuel at the same time or in groups.

Is 12 valve or 24 valve better?

The 12 Valve engine is hands down more reliable than the 24 Valve. Even guys who have spent the money to get an aftermarket lift pump (a must with a 24 Valve, along with a fuel pressure gauge) have gone through multiple pumps.

How many cylinders does a 12 valve have?

The Cummins 6BT engine is inline six cylinders 5.9-liter turbocharged diesel engine (turbodiesel). The engine has a cast-iron engine block and cylinder head. The valvetrain is 12 valve OHV (2 valves per cylinder), solid tappets. In this order, the engine is called a 12-valve Cummins very often.

What does MPI stand for cars?

Multi-Point Injection
The Multi-Point Injection (MPI) system is known for its capacity for saving fuel consumption. The MPI was originally developed only for airplane engines. However, it is now widely used in cars.

When did they stop making the 5.9 Cummins?

2007
2006 and 2007 would be the final years of the 5.9L Cummins. With a growing movement for emissions and more power, Cummins would introduce the 6.7 halfway through 2007. At the start of 2003, the truck rated at 235 RWHP / 460 ft-lb of torque, not bad at all.

Why is the 5.9 Cummins reliable?

If you don’t consider the fuel system, the 5.9 Cummins is a very reliable engine. The internal parts like the pistons, rods, and crank will last for a zillion miles even with some abuse. The turbos are very responsive and will give a long service life, but they don’t have a tremendous horsepower potential.

What did the 5.9 Cummins come in?

You can find these Cummins engines in many Dodge Ram 2500, 3500, 4500 and 5500 truck models. The original design in 1989 to 1993 started with a 5.9l VE-Rotary pump and 12 valves. These engine produced 160 horsepower (HP) and 400 foot pounds of torque (lb-ft).