hello banerjeerupak
well,when u mention how much power(max power the engine can produce--)u have to mention at which speed?
so at a certain speed u can get a certain power-
and for this max power the engtine can generate---its can be monitored at a different values for the speed---in an indicated diagram of the power&speed ---
which kind of the power u talking about?
for the rated power-couldnt u see the max speed in the dashboard?and then u could calculate how much power?
for the brake hp__u could use a dynamometer_in which the speed is indicated_and torque calculated_and then (torque*angular velocity=power)
hope i could help u-