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Thread: 6AL tachomerter port

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  1. #1
    eckertd Guest

    Default 6AL tachomerter port

    Quick question about the MSD-6AL tachometer port...

    Is a signal generated at the port once per rpm, or once per ignition event (8 pulses per rpm for 8cyl)?

    I'm hoping it's the latter! :001_smile:

    Thanks!

    --Doug

  2. #2
    eckertd Guest

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    Quote Originally Posted by eckertd
    Quick question about the MSD-6AL tachometer port...

    Is a signal generated at the port once per rpm, or once per ignition event (8 pulses per rpm for 8cyl)?

    I'm hoping it's the latter! :001_smile:

    Thanks!

    --Doug
    OK, brain-fart there. :blush:

    The 6AL produces a signal at the tach output port once per ignition/spark event which means 4 "pulses" per rpm in a V8, not 8 as indicated above, duh!

    I'm building a DIY rpm logger (as part of a DIY data acquisition rig) and this is much-needed info. Hope someone else can use it as well.

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