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Thread: PIERCE 4 engine timing ??

  1. #1

    Default PIERCE 4 engine timing ??

    Hello, Can anyone help me to time a 1911 PIERCE 4 . i only have timing marks on cams and crank . not intermediate gear How would i set up correctly and also set the magneto .thankyou mike.

  2. #2
    Join Date
    Oct 2011
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    Quote Originally Posted by motorheadmike View Post
    Hello, Can anyone help me to time a 1911 PIERCE 4 . i only have timing marks on cams and crank . not intermediate gear How would i set up correctly and also set the magneto .thankyou mike.
    I am not familiar with your machine,but since you have 0 replies ,this is how I would try to time with no marks,assuming you can locate tdc on the cylinder your timing.
    Since most of these motors have the valve overlap centered on tdc locate tdc and install cams so exhaust is just closing as intake opens centered on tdc.Rotate crank slightly less than 360,not sure how much advance you require,then set mag to points just breaking in full advance position.
    Probably stuff you are already aware of and possibly wrong but maybe some useful info will come from a discussion.
    Have fun,
    Tom

  3. #3
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    Sequence question: Is 1-3-4-2 most common, or 1-2-4-3 ?? Or is there another crank layout of the 4 throw lobes?

  4. #4
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    Quote Originally Posted by motorheadmike View Post
    Hello, Can anyone help me to time a 1911 PIERCE 4 . i only have timing marks on cams and crank . not intermediate gear How would i set up correctly and also set the magneto .thankyou mike.
    Private message sent
    AFJ

  5. #5
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    Apr 2003
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    Seaford, NY
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    The method tburke3 describes only works on symmetrical timed cams.

  6. #6
    Join Date
    Aug 2004
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    Beautiful Northern New Mexico
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    The method tburke3 describes only works on symmetrical timed cams.
    Agreed, doesn't work on most Brit twins and many others.
    Robbie Knight Amca #2736

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