#1998 dodge ram 5.9 timing cover leak upgrade

The high-pressure mechanical injectors were redesigned to inject fuel into the center of the piston.

While the injection pump on the 24-valve was electric, the injectors remained mechanical. In addition, the new electronically controlled VP44 injection pump was responsible for pressurizing the fuel, controlling the injection timing, and monitoring fuel flow. The fuel system was upgraded to increase performance with a new fuel injection pump that replaced the Bosch VP44 pump. The forged steel crankshaft and connecting rods were also carried over due to their durability. The existing cast-iron block and cylinder head were already proven commodities and were more than capable of handling the increase in power. Maintaining the legendary level of reliability was another major focus when redesigning the 5.9L. Incorporating 4 valves per cylinder not only gave the engine more power but also provided enhanced throttle response and a broader torque curve.

The combination of increased valves, as well as an enhanced fuel system, significantly increased airflow and provided more precise fueling, all while delivering more horsepower and torque.

#1998 dodge ram 5.9 timing cover leak upgrade

The big upgrade on the 5.9L diesel engine midway thru 1998 (or 1998.5 as it is often referred to) was doubling the number of valves in the cylinder head from 2 valves to 4 valves per cylinder. This ultimately helped lead to the introduction of the 24-valve diesel engine. Leading the field and competition in horsepower and torque has played an important role throughout the history of the automotive industry, none more so than the ultra-competitive diesel marketplace. Ram 2500/3500 trucks maintained their signature body style with some slight cosmetic changes but received a new modified version of the 5.9L diesel engine. Posted on Octoby Jeremy_XDP 0 History/General Infoįor the second half of the 1998 model year, Dodge made some major mechanical changes to their diesel-powered trucks. Buyers Guide, RAM / Dodge 1998.5-2002 Dodge Ram 5.9L Diesel Buyer’s Guide