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How does ignition timing affect engine performance and fuel efficiency? Advancing ignition timing can have the effect of improved low-end torque, making the engine feel more responsive. Proper timing also contributes to smooth engine operation.
The idea is to light the charge in the cylinder with enough lead time (advance) to create maximum cylinder pressure at the ideal point after top dead center (ATDC) to push the piston down,...
We’ll look at three critical ignition timing areas: initial timing, mechanical advance, and vacuum advance. Together, they form the overall spark curve the engine uses over its entire RPM and load range for optimal performance.
Changing the timing value up or down changes the engine speed up or down for the optimum ignition timing. The engine speed operating range affects where the timing is the best. Increasing the timing advance raises the high-end power, reducing the low-end.
That’s why an engine usually has an initial timing of something around 10 degrees advance. What’s 10 degrees advance, you ask? You have two primary settings to toy with, initial timing and...
The way we do it is to set the timing at 30 degrees total advanced on the No. 1 cylinder, with the engine at a predetermined rpm.
Engine timing advance refers to the process of adjusting the ignition timing of an engine to occur before the piston reaches the top dead center (TDC) of its compression stroke. This advanced timing allows the fuel-air mixture to ignite and begin the power stroke earlier, resulting in increased engine performance, particularly at higher RPMs.