How to determine EXACTLY where TDC is?, Valve adjustment advice needed Options

[JeffBowlsby]

Eyeballing alignment of the rotor to the tick mark on the dizzy body seems so imprecise...for adjusting valves. Is there a method of locating TDC for each cyl PRECISELY?

1. I thought about making some kind of rotor replacement device with a pointer that could extend down close to the tick mark, but thats only good for cyl 1. All cylinders needed.

2. I thought about making a special trigger point plug adapter with three long wires, and attaching it to me DVM on the buzzer setting. When the trigger points would make contact, then that would indicate...? I am not sure that the trigger points make contact at TDC, I think it is at some different point in the cycle.

Any time proven methods?

[ClayPerrine]

Just do this the easy way.....

Take off BOTH valve covers. Hook up a remote starter switch. Look at the valves for #2 (front left cylinder). Bump the engine until the exhaust valve opens. Because the engine only has 4 cam lobes, the exhaust valve on #4 will be on the base circle, ready to be adjusted. Adjust that one, and bump the engine until the intake valve on #2 opens, then adjust the intake valve on #4. Bump it again and the intake on #1 will open, so adjust the intake valve on #3. Bump it again until the exhaust valve on #1 opens, and adjust the exhaust valve on #3.


Now repeat front to back on the other side.


It is simple, and it works every time.