Diesel Truck Repair

Dodge Diesel Repair

Dodge Ram Cummins Diesel Repair

Dodge and Ram diesel engine repair and service, Bigg Boy Automotive in West Palm Beach FL. Through years of experience, we have become aware of the most common problems in Dodge Cummins diesel engines.Whether you have dealt with a hard start, knocks in your engine, or even your truck not starting, we can help. Many Dodge Cummins owners have seen the effects of a bad high pressure pump in their diesel engine which we are experts at diagnosing and repairing. Give us a call today to see how Bigg Boy Auto can repair your engine to factory settings .

Dodge Ram Cummins Diesel Performance

Whether you’re looking for increased performance from your engine, better fuel economy, or some eye-catching style, we can help. Bigg Boy Auto offers sales and installation of aftermarket diesel performance products including cold air intakes, turbo kits, and plug-in tuners, improved EGR coolers, diesel fuel lift pumps and all the seals your Dodge Cummins truck could need.

The Cummins B Series is a family of American straight-four and straight-6 diesel truck and industrial piston engines that are manufactured by Cummins. The B Series is known for the popular 3.9 liters (238.0 cu in) straight-four and 5.9 liters (360.0 cu in) straight-six motors. Straight-fours displacing 3.3 liters (201.4 cu in) and 4.5 liters (274.6 cu in) are also available. The B Series is widely used in many segments, including pickup trucks (the Dodge Ram), buses, military vehicles, construction equipment, and marine vehicles. Some of the construction and marine applications use a dual installation, of two B Series Cummins engines. The engine was originally designed by Cummins and Case Corporation for commercial truck applications, and gained much of its popularity after appearing in the Dodge Ram, in 1989.

Dodge Diesel Engines

Dodge Diesel Repair

The 5.9 liters (360.0 cu in) 6BT, aka the Cummins “12-valve” was the first member of the “B” engine family to be used in a light truck vehicle. The 6BT used Robert Bosch GmbH fuel systems, injector, and VE rotary pump and P7100 inline injection pumps. Some early 6BT’s were supplied with CAV rotary pumps instead, before the Bosch system became the sole standard. This engine started life in 1984 designed as an agricultural engine, for use in Case agricultural equipment. After 1989, the 6BT engine was used in light duty, medium duty and select heavy duty trucks and buses.

Appearing in the 1989–1998 Dodge Ram pickup truck, it became a popular alternative to the large V8 gasoline engines normally used in full-size pickup trucks, since it produced the torque at low engine speeds, and significantly better fuel mileage. During that time, the Dodge Ram was the only diesel pickup that featured Direct Injection and did not rely on glowplugs for cold weather starting.

Dodge Diesel Repair

Midway through model year 1998, the Dodge Ram switched from the 6BT to the ISB to meet updated emissions requirements. Like other ISB’s, these engines started out using the Bosch VP44 rotary injection pump. The VP44 setup meant that timing and fuel could be precisely controlled, which led to cleaner emissions. However, VP44 failure rates were higher than the older P7100 injection pump. The compression ratio in these engines was 17.2:1. The 1998–2000 ISB was rated at 215 horsepower (160 kW; 218 PS) and 420 pound-feet (569 N·m) when equipped with the 47RE automatic transmission. The 1998 ISB was rated at 235 horsepower (175 kW; 238 PS) and 460 pound-feet (624 N·m) when equipped with the manual transmission. The 1999–2000 ISB was rated at 235 horsepower (175 kW; 238 PS) and 460 pound-feet (624 N·m) when equipped with a manual transmission. For the 2001–2002 model years, a standard output and a high output ISB Cummins engine were offered.

The standard output, which was the same as the previous engines was rated to 235 horsepower (175 kW; 238 PS) and 460 pound-feet (624 N·m) when equipped with either a manual transmission or automatic. The high output ISB was rated at 245 horsepower (183 kW; 248 PS) and 505 pound-feet (685 N·m), with only a NV5600 six-speed manual transmission available. The high output engine was different in a few ways from the standard output engine; it had higher compression (17.1:1), powdered metal valve seat inserts, a larger flywheel, the Bosch fuel system was reworked to allow higher fuel flows, and fuel-injection timing was altered. Also in 2001 a new cam gear was introduced thus eliminating the need for a crank position sensor on the later 01-02 models.

Dodge Diesel Repair

For the 2003 model year, the Cummins was introduced with Bosch high pressure common rail fuel injection, again increasing power output. On automatic equipped vehicles, the 47RE was upgraded internally to increase durability and torque capacity, now known as the 48RE. The 2003 rating for the Dodge truck was released at 305 horsepower (224 kW; 308 PS) and 555 foot-pounds (752 N·m). Midway through the 2004 model year, the Cummins 600 was introduced, producing 325 horsepower (242 kW; 330 PS) at 2,900 rpm and 600 pound-feet (813 N·m) at 1,600 rpm. This engine was noticeably quieter than the previous engines.

The B6.7 is the latest version of the B Series. It is currently the largest straight-six engine produced for a light duty truck. It produces 350 horsepower (261 kW; 355 PS) and 650 pound-feet (881 N·m) in the 2007.5 and newer Dodge 2500/3500 pickup trucks with the Chrysler-built six-speed 68RFE automatic transmission built at the Kokomo Transmission plant in Kokomo, Indiana. Engine torque is slightly reduced with the Mercedes G56 6-speed manual transmission at 350 horsepower (261 kW; 355 PS) and 610 pound-feet (827 N·m). The 2007 and newer 3500 Cab & Chassis trucks only get the 305 horsepower (227 kW; 309 PS) and 610 pound-feet (827 N·m) version of the B6.7, whether it has the Aisin AS68RC or the Mercedes G56 6-speed manual transmission. As for the 2008 4500/5500 medium duty Chassis Cabs or the Sterling Bullet Trucks, they receive the 350 horsepower (261 kW; 355 PS) and 610 pound-feet (827 N·m) version of the B6.7, whether it has the Aisin AS68RC or the Mercedes G56 6-speed manual transmission. Late model 2011 Ram trucks produce 350 horsepower (261 kW; 355 PS) and 800 pound-feet (1,085 N·m), with the exhaust brake rating boosted from 150 horsepower (112 kW; 152 PS) to 222 horsepower (166 kW; 225 PS).[5] This motor is also use in classic trucks such as the Freightliner M2. In this application, it is commonly paired with an Allison automatic or 6-speed syncromesh manual transmission.
Changes over the 5.9

There are many changes over the previous B5.9 for the Dodge truck, the most obvious being the larger displacement. The B6.7 had an increase of cylinder bore and piston stroke to 4.21 inches (106.9 mm) and 4.88 inches (124.0 mm) stroke, respectively, thereby giving a displacement of 408 cubic inches (6,686 cc).

Bigg Boy Auto is West Palm Beach’s premier Dodge diesel truck repair center.