Mitsubishi Camshaft for FG25 Forklifts | 4G63 8-Valve | OEM MD073744

Technical Q&A: Mitsubishi 4G63 8V Camshaft

Will this MD073744 camshaft fit the 16-valve Mitsubishi 4G63 engine?

No, this specific camshaft (MD073744) is engineered exclusively for the SOHC 8-valve iteration of the 4G63 engine, which is the standard configuration for forklifts and industrial equipment. The 16-valve automotive 4G63 utilizes an entirely different DOHC profile and bearing setup. Always verify your cylinder head valve count before installation.

What is the primary cause of lobe flattening in 4G63 forklift engines?

Premature lobe wear in material handling applications is primarily caused by degraded lubrication from extended idling and oil starvation during cold warehouse startups. Our chilled cast iron camshafts are forged with an enhanced surface density (HRC 50-55) specifically to withstand these harsh lubrication environments, preventing the profile from flattening over time.

Do I need to replace the rocker arms when installing this new camshaft?

Yes, it is highly recommended to replace the rocker arm assembly alongside the camshaft. Mating a new MD073744 camshaft with worn or previously scored rocker arms will inevitably cause “pattern transfer,” rapidly destroying the new cam lobes. Furthermore, ensure the overhead oil spray bar is fully cleaned to provide necessary lubrication.

How does Ruich Value test the durability of these industrial engine parts?

Every camshaft we export undergoes strict magnetic particle inspection (MPI) to identify any internal casting flaws. We also conduct 100% surface hardness testing on the lobes and journals to guarantee they meet the demanding specifications required for continuous heavy-duty forklift operations.