Realize most errors in this post so am editing to prevent possible long strings.
I think I understand what is said below is in cases where there may have been an assembly error and the dimple no longer indicates TDC #1, or a new gear timing mark is incorrectly stamped, an alternate method may have to be used. If all is assembled correctly and parts are correct then no problem. Ideally all you should really have to check is points gap and points timing (at full retard) with the dimple indicating TDC #1.
From what I think I understand, since the distributor is fixed, and only the points plates move, rotor position should be a close indicator for #1 TDC if it is lined up with the #1 position on the dist. body.
So changing the points timing does not affect rotor position, bur rotor position affects points timing. So I do not understand below about points timing affecting rotor position.
Would appreciate comments if my understanding is incorrect.
Quote:
Originally Posted by 100IH
Everyone needs to learn a method that is always useful under all circumstances. That means don't rely on the distributor. On a new engine or just after head gasket the dist. has been out and needs to be re-installed in time with the camshaft position so one needs a method that does not rely on the rotor. If the rotor has not been moved, that's OK but often the thin washer underneath dist. cam can get lost leaving the cam able to migrate out of time with eveything else.
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