tentang noken as, mengapa papas noken as, lift bisa tinggi

Why can camshaft reduction increase lift? Note: camshaft reduction can increase valve lift, but you must pay attention to the camshaft duration. At the very least, the duration should be within the standard range. The effect of a duration that's too wide is that compression becomes low, and the throttle is unstable. It feels like the valves are jammed. The effect of a duration that's too short is that the upper rpm will quickly become loud and won't operate. Increasing the LSA means higher overlap, increasing the upper rpm but sluggish lower rpm. Narrowing the LSA reduces overlap, which is good at lower rpm, but only makes the engine scream at higher rpm. Widening the duration and increasing the lift aims to increase the intake of fuel and air into the combustion chamber during intake, and also speeds up the exhaust of combustion products during the exhaust stroke. Increasing overlap will make the new fuel entering the combustion chamber cleaner and easier to detonate, and can reduce excess heat at high rpm. Long duration requires high compression to avoid losing power at lower rpm. Increasing compression can be done through: Larger piston Piston dome Structure up