Determining top dead center
(→Before you begin) |
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Make another mark on the masking tape with your ball-point pen to coincide with the tip of the timing pointer. With your 6 inch caliper, measure the distance between the two marks you made with the pen. Divide this distance in half. | Make another mark on the masking tape with your ball-point pen to coincide with the tip of the timing pointer. With your 6 inch caliper, measure the distance between the two marks you made with the pen. Divide this distance in half. | ||
| − | Move the jaws of the caliper to show this half distance. With one caliper jaw on one of the marks you made with the pen, the other jaw of the caliper will be at true top dead center. Make another mark on the masking tape at the caliper jaw to show this center (or middle) position on the masking tape and affix your degree tape onto the ring, aligning TDC on the timing tape with the center mark you made on the masking tape. | + | Move the jaws of the caliper to show this half distance. With one caliper jaw on one of the marks you made with the pen, the other jaw of the caliper will be at true top dead center. Make another mark on the masking tape at the caliper jaw to show this center (or middle) position on the masking tape and affix your degree tape onto the ring, aligning TDC on the timing tape with the center mark you made on the masking tape. If the timing tab and damper line agree with this, they're accurate. If not, the tab can be readjusted or another line made on the damper to coincide with '''true''' TDC. |
Remove the piston stop tool probe and housing. Tighten the rocker arms back the same number of turns you used when you loosened them. With your buddy holding his thumb over the #1 spark plug hole, rotate the crankshaft until he feels compression against his thumb. | Remove the piston stop tool probe and housing. Tighten the rocker arms back the same number of turns you used when you loosened them. With your buddy holding his thumb over the #1 spark plug hole, rotate the crankshaft until he feels compression against his thumb. | ||
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