Readers ask: Which School Bus Has Cummins 5.9?

What Cummins is in a school bus?

With the Cummins B6. 7, L9, or Cummins Westport B6. 7N and L9N, you can’t go wrong with your first pick when it comes to providing a highly reliable, clean emissions power source.

What vehicles have a 5.9 Cummins?

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).

What Diesel engines do school buses use?

Ultra-low sulfur diesel (ULSD) fuel and advanced technology diesel engines helps these new buses reduce emissions of particulate matter (PM) and hydrocarbon (HC) emissions to near zero levels.

Are all 5.9 Cummins the same?

There are three types of fuel systems used on the 5.9 Cummins engines, and these differences are the only major aspects that set them apart from each other. The engines are universal as far as transmission mounting, if a tranny fits one engine, it will fit another (providing the proper adapter plate is used).

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Do buses have Turbo?

Buses and trucks generally use a 6 cylinder in-line diesel engine and using a turbocharger can improve the thermal efficiency of the engine and also can control the emission level to an extent. Though old buses are not equipped with turbocharger the buses manufactured nowadays are fitted with a turbocharger.

What is the fastest a school bus can go?

By law, school buses must travel β€œat a safe rate of speed, consistent with the volume of traffic, intersections, curves, railway crossings and any other condition requiring special caution.” The law sets the maximum speed for school buses at 50 mph on divided, limited access highways and 40 mph on all other highways, β€œ

What is the best year for 5.9 Cummins?

Known for its reliable Cummins engine and its power, Rams have been the favorite truck of diesel drivers since the 1980s. The truck has gone through many changes over the last 50 years, with some years being better than others. The best years for Dodge diesel trucks are 1996-1998, 2006-2007, and 2010-2011.

What is considered high mileage for a 5.9 Cummins?

What Is Considered High Mileage for a Cummins Diesel Pickup Truck? Cummins is the brand of engine found in the Dodge diesel and Ram diesel truck lines. Like the Duramax, Cummins diesel engines can be expected to last a long time. Between 350,000 and 500,000 miles is usually considered high mileage on a Cummins diesel.

How much HP can a 5.9 Cummins handle?

The 5.9L inline-six mill’s factory rotating assembly from ’89 to ’02 is capable of handling 800 hp (1,400 to 1,600 lb-ft of torque) without breaking a sweat, and is often pushed into four-digit territory before aftermarket rods become a consideration.

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How many miles can a diesel bus last?

On average, a clean-diesel school bus can travel about 510 miles on a tank of diesel vs. only 270 miles on gasoline, based on the same standard-sized fuel tanks.

Why are gas engines better than diesel?

Diesel fuel simply packs more energy in every gallon than gas fuel, which makes it more economical overall. Diesel engines are still more efficient than gas engines, but less so for those who are mostly engaged in city driving. For most U.S. consumers, diesel fuel and gas fuel cost about the same.

How much diesel does a school bus use?

These buses are 20 tons burning diesel for most of them and that produces 7.1245 pounds of CO2 per bus mile. City buses run 17 mph average for 18 hours a day or 306 miles per day or 2180.1 pounds of CO2 per day or 398 tons per year per city diesel bus.

How good is the 5.9 Cummins?

Outside of the fuel system, the 5.9 24v is a very reliable engine. The engine internals such as the pistons, rod, and crankshaft will last a lifetime and can hold up beyond 500,000 miles. Outside of the fuel system components, you should expect to replace common items like water pumps, hoses, belts, etc.

Is 5.9 or 6.7 Cummins better?

6.7L Pros & Cons Larger displacement and longer stroke than the 5.9 L means more low-end torque and better ability to spool a larger turbo. 350hp to 385hp stock (depending on model year and transmission) 650 lb-ft to 900 lb-ft of torque stock (depending on model year and transmission)

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Is a 12 valve Cummins better than a 24 valve?

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.

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