hello, I just paid € 65 to do some technical checks on the clutch disc. I push it new brand EXEDY like the original one holds the clutch up to 23/24 kg which translated into Nm is 235 Nm.
we know that the Isuzu 4JB1T pair is 242 Nm / 2100giri.min.
so I found that if the turbine pressure or the injection pump pressure increases slightly, the engine torque increases and the original clutch skates. old or new