Cam spacing specs help. 308 vs 328 | FerrariChat

Cam spacing specs help. 308 vs 328

Discussion in '308/328' started by Saabguy, Jun 9, 2017.

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  1. Saabguy

    Saabguy Formula 3

    Mar 28, 2012
    1,785
    Shreveport, LA
    #1 Saabguy, Jun 9, 2017
    Last edited by a moderator: Sep 7, 2017
    Hello all,

    so in this thread http://www.ferrarichat.com/forum/308-328-sponsored-yellow-compass-group/553618-belt-change-gone-south.html Martin said that one way was to use the Ferrari tool for checking cam position. And there was a picture of it here. Martin has been kind enough to provide a mechanical drawing of it but he had a caveat, that I needed to make sure that:

    a. The spacing between cams was the same for 308 vs 328

    b. That the cam diameter was the same for 308 vs 328 and I came up with

    c. Will this tool work and help if you have a later 328 ('88 pr '89)?

    As usual, thanks folks!
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  2. GordonC

    GordonC F1 Rookie
    Owner Rossa Subscribed

    Aug 28, 2005
    4,163
    Calgary, AB, Canada
    Full Name:
    Gordon
    That tool is for the 2 valve 308s, 1976-1982. It won't work for the quattrovalvole 308s, which have similar heads to the 328s.
     
  3. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,598
    San Carlos, CA
    Full Name:
    Mitchell Le
    I don't think it's 308 vs 328. I think it is 2V vs 4V
     
  4. Martin308GTB

    Martin308GTB F1 Rookie

    Jan 22, 2003
    4,259
    Black Forest Germany
    Full Name:
    Martin N.
    Just in case, that there are some misunderstandings. Using this genuine Ferrari tool on other than 2V-engines is not the point.
    I made a drawing for a selfmade tool and took the dimensions of my carb engine. So it should be the same like the genuine F-tool.
    So far I see no reason why it shouldn't work on the 4V-engines. Provided that my drawing would be modified regarding the differing dimensions.
    To verify this we should just know the diameter of the camshafts and the centerline distance between the camshafts. Easiest way to determine this is meauring the clearance between the camschafts adding one diameter.

    [Edit] But meanwhile I suspect, that this design principle of the tool really may not work on the 4V-engines because of the shape near the pulleys.
    Does anyone have a picture of a 4V-camshaft where one can see how it looks at the pulley flange end?

    Best
    Martin
     
  5. andyww

    andyww F1 Rookie

    Feb 7, 2011
    2,775
    London
    The 328s already have pointers fitted here. Or at least Euro cars do.
     
  6. Martin308GTB

    Martin308GTB F1 Rookie

    Jan 22, 2003
    4,259
    Black Forest Germany
    Full Name:
    Martin N.
    #6 Martin308GTB, Jun 9, 2017
    Last edited by a moderator: Sep 7, 2017
  7. andyww

    andyww F1 Rookie

    Feb 7, 2011
    2,775
    London
    Yes, and 11.

    Doubt they are very accurate but should show one tooth out.
     

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