Restricting the amount of air mass induced into the engine is the most convenient way, and is commonly used to limit engine performance in racing competitions. Student Formula Japan uses this method in its competition. Another regulation is that the engine capacity cannot exceed 710 cc, but the engine must still use a 20 mm restrictor in the air intake system. With the restrictor, it is necessary to adjust various engine geometry parameters to maximize the performance of the engine. In this study, these adjustments were made to the camshaft phasing configuration, and it increases engine power and torque of up to 3%. The peak power and torque are delivered at lower engine speeds of 5,000 - 8,800 RPM. It provides progressive torque delivery and makes the engine much more suitable for FSAE and Formula Student applications. Modification of advance timing causes the power and torque curve at low speed to be wider, but its peak power and torque to be lower. Modify the valve timing configuration is the easiest way to adjust the engine performance characteristics on the track. These findings contribute to adjusting the valve timing configuration into advanced timing