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E21 323i Ignition Timing

Discussion in 'E21 (1977-1983)' started by ctexter, Mar 27, 2008.

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    ctexter

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    I'm trying to dial in my newly acquired 323i and have a question about timing marks on the harmonic balancer. Which mark do I use when timing with a timing light and do I line it up with the pointer (part of the sensor supporting bracket) adjacent to the magnetic sensor?

    Thanks,

    Chris
    • Member

    MGarrison

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    Wish I had a specific answer for ya Chris - however, I think your 323's engine might be a early form of the the eta M20 engine (I could be totally wrong too) - but if it is, the E30 Bentley manual might have that info for you.
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    mjweimer

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    I don't have any direct experiences with a 323i but on an M10 4 cylinder you adjust timing to the 'Z' mark on the flywheel with the vacuum advance disconnected at a certain rpm (varies by model year).

    Are the timing marks for the M20B23 on the front pulley?

    Maybe this link will help?

    http://forums.bimmerforums.com/forum/showthread.php?p=10781298

    There is no specific info on where the timing marks are located but there is good info regarding timing specs and setting static timing.

    Matt
    • Member

    ctexter

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    Thanks for the input. It seems these early small sixes have a different timing scheme. I have timing marks on the harmonic balancer and that is also where the magnetic pickup is located for use with BMW test equipment.

    Also, I have found a source for a Haynes manual covering the Euro E21's so I hope to find what I need there.

    Thanks,

    Chris
    • Member

    mjweimer

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    Good score on the Euro E21 Haynes manual. Hopefully it will have all the info you need.

    Good Luck!


    Matt

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