top dead center
Top dead center is when the engine's piston is at its highest point. It's important for setting up the engine's timing correctly.
Top dead center (TDC) refers to the position of the piston in an engine when it is at its highest point in the cylinder. This is a critical reference point for timing the ignition and valve events in the engine cycle.
Hear It Discussed
"just you take it out you drop it in on top dead center you're fine it works. Time it and you're you're good."
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"it used to be you'd fire the injector so many degrees before top that center. You know, each cylinder three degrees before..."
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"because the piston was near top dead center. If I rotate the engine backwards, I can get down close to low bottom dead center before the engine would kind of lock up on itself again."
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