Editing Determining top dead center (section)
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===Procedure done with valves closed=== Remove the valve cover for #1 cylinder and back off the rocker arms for both valves for that cylinder. COUNTING THE NUMBER OF TURNS YOU LOOSEN THE ROCKER NUTS WILL MAKE IT A SNAP TO GET NEAR TO THE CORRECT LASH WHEN YOU TIGHTEN THEM BACK AFTER THIS OPERATION. Disabling the valves by backing off the rocker arms will prevent interference between the timing tool probe and the valves while turning the crank. Turning the engine over by hand will be easier if you remove ALL the spark plugs. With a socket on the damper retaining bolt or using the tool described and a long socket handle, rotate the crankshaft clockwise while your buddy uses a strong flashlight to look into the #1 spark plug hole. Bring the piston up to top dead center, then continue rotating the crank very slowly so that the piston comes down in the bore slightly. You want the piston slightly past top dead center down in the bore, but not so far down in the bore that the probe of the top dead center tool will not contact the piston crown. At this point, we are not concerned with where the crank/piston is in the total 720 cycle of operation. In other words, we have the valves disabled, so it doesn't matter whether you are on the exhaust cycle or the compression cycle as the piston comes up to TDC. All we are working with at this point is the 360 degrees of the damper, regardless of the cam and valves.
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