A two-stroke, single cylinder, and air-cooled petrol engine is selected to conduct the study. The engine is to be tested for its performance at various operating conditions without piston crown coating. Then the surface of the piston crown is coated with two different TBCs materials. Four pistons are selected for TBCs two pistons (P2, P3) are coated with ZrO2 of various thicknesses as given in table. The other two pistons (P4, P5) are coated with TiO2 of various thicknesses as given in table. The coating process is performed using the plasma spray technique. The engine is to be tested for its performance at various operating conditions. The results for both cases are to be analysed and then compared.