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10 degrees BTC(Before Top Dead Center) for both auto and manual trans. Idle 700RPM for manual and 650 RPM for auto trans
TDC is 0 degrees TDC, not 10 degrees BTDC which is before top dead center. ATDC is after top dead center. Both of these in relation to piston height are "below top dead center".
A motor that has greater than stock displacement due to an increase in the factory crank throw. An increase in crank throw increases stroke (the difference between the piston's top dead center and bottom dead center position).
Top Dead center is when #1 cylinder is at its upper most point in its stroke
looking at the timing marks from the top left to right you have 5 degrees after top dead center, then top dead center then 5 degres 10, 15 then 20 befor top dead center. the timing is 7 degrees before top dead center
piston not at top dead center both pulleys need to be lined up with marks
12 degrees before top dead center.
#1
8 degrees before top dead center.
93-98 240sx timing is 18-22 before top dead center
bring #1 piston to top dead center where both intake & exahust valves are in closed position
Take number 1 plug out, put your finger in the plug hole turn motor over manually preferably, when piston is at top dead center it will blow air out of number 1 hole.