Distributor Advances (Part 1) – How they Advance the Timing

In this video the tech staff show how a distributor Advance adjusts timing as engine RPM increases. Both Mechanical and Vacuum Advances are explained.

8 replies
  1. casanovaevren
    casanovaevren says:

    my vacuum advance was leaking I just removed it adjusted the initial to 24 total 34 runs awesome .probably burning more gas though

    Reply
  2. silverbird58
    silverbird58 says:

    A swing weighted advance ,Advances "in the direction of rotation" & vacuum advance cuts Against rotation .
    note aftermarket cams with big overlap (pulse ) inside the intake manifold even though the gauge reads steady. and bigger than stock intake runners amplify this Non seen effect,.

    Reply
  3. Ray Bohn
    Ray Bohn says:

    Thanks.  The videos on advance curves are great. Part 1 and 2 answered a lot of questions.
    I am 69 years old and have never been a car guy. I can now understand how it works and will research how to adjust the curve based on the dozens of variables presented by my car and engine.
    As a member of the human community, I must apologize for some of the comments made here.

    Reply
  4. magster65
    magster65 says:

    @2manysecrets2
    Don't take it the wrong way dude… that was funny! Anyways, should that vacuum line have vacuum to it constantly so it has full vacuum advance until the throttle is opened?

    Reply

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