A four cylinder petrol engine has a bore of 57mm and a stroke of 90mm it's rated speed id 2800rmp and it is tested at this speed against a brake which has a torque arm of 0.356m. The net brake load is 155N and the fuel consumption is 6.74 1/h. The specific gravity of the petrol used is 0.735 and it has a lower calorific value of 44,200 kj/kg. A morse test is carried out and the ceiling that are cut out in the order 1234 with corresponding brake load of 111, 106.5, 104.2 and 111N perspectively calculate for this speed the engine torque, the bmep, the brake Thermal efficiency the specific fuel consumption, mechanical efficiency and the imep​