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Boxer timing marks

Discussion in 'Technical Q&A' started by robertinOK, Dec 17, 2004.

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  1. robertinOK

    robertinOK Karting

    Dec 5, 2003
    209
    Stillwater, Oklahoma
    Full Name:
    RobertWakeling.com
    #1 robertinOK, Dec 17, 2004
    Hi, Does anyone have any details as to what all the timing marks represent on the flywheel of my 512BBi? I was trying to check the Ign. timing only to find no marks anywhere near where expected, and then at least 4 or 5 timing marks distributed around the flywheel. This may be a stupid question...but No.1 cyl. is the front/passanger side of the engine?
    It all seems prety 'oiley' around the clutch housing...any ideas...main crank seal?
    Thanks, Robert
     
  2. atheyg

    atheyg Guest

    #2 atheyg, Dec 18, 2004
    Robert,

    Check the ftalk site under tech articles tuning the 512bb a novice perspective, good explanation on the marks with pics.


    Their is a small cover on the bellhousing on the pass side you remove and will see a pointer and the timing marks PM1-6 TDC, AF10 =900 rpm AF32-3200 rpm and Af35-5000 rpm, these are for a BB unsure if they changed on the BBi

    You will see the cylinder # cast on top of the block also.
     
  3. robertinOK

    robertinOK Karting

    Dec 5, 2003
    209
    Stillwater, Oklahoma
    Full Name:
    RobertWakeling.com
    #3 robertinOK, Dec 18, 2004
    thanks for the info...I'm also assuming that as I'm running an MSD idnition unit I may well be gettin gmutiple timing light flashes at tickover...that could be confusing the issue! Not sur ehow to get around that though.
    Robert
     

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