348 - Timing Question .... | FerrariChat

348 Timing Question ....

Discussion in '348/355' started by 348steve, Jun 26, 2019.

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  1. 348steve

    348steve Karting

    Jul 18, 2018
    151
    Full Name:
    Stephen G
    I'm doing the timing right now and reading through a bit of the forum ...

    I bumped into this DIY thread from some years ago, captured below.

    The text indicates that you need to find TDC "on both banks" separately? Once you finish with the first 1-4 bank you need to proceed to get TDC from the 5-8 bank as well? Using cylinder #8?

    Is this a mistake or am I missing something fundamental here?

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  2. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,624
    San Carlos, CA
    Full Name:
    Mitchell Le
    It's not a mistake, but it is also not necessary. There is only one crank shaft and it is manufactured to very tight tolerance. I would trust that TDC on Cyl1 will also imply that TDC on Cyl8 is 90 degrees away on the degree wheel.

    But, if you are OCD, then have at it.
     
  3. 348steve

    348steve Karting

    Jul 18, 2018
    151
    Full Name:
    Stephen G
    I agree 110%. In fact I like to determine TDC by lining up the 5-8 bank equally, meaning get the #7 and #8 to both be at equal position, thus giving you TDC. I can do it by eye with sub degree accuracy.
     

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