308/Mondial 8 cam lock tool drawing? | FerrariChat
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308/Mondial 8 cam lock tool drawing?

Discussion in '308/328' started by mondial82, Sep 24, 2017.

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  1. mondial82

    mondial82 Rookie

    Aug 24, 2016
    2
    Limoges, France
    #1 mondial82, Sep 24, 2017
    Hello, I am in the process of a timing belt change following Birdman's procedure and was wondering if anyone here could provide me with a simple drawing of a cam lock "device" I could fabricate in hardwood? Importing specialised tool from the US to Europe is just too long and too expensive for something as simple as that and a drawing would save me time to get the right design. Many thanks and have a great week end!

    This is my first Ferrari and I am quite well impressed by the US community! Good on you guys!
     
  2. waymar

    waymar Formula 3

    Sep 2, 2008
    1,354
    Northeast, PA - USA
    Full Name:
    Wayne Martin
    #2 waymar, Sep 24, 2017
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  3. mondial82

    mondial82 Rookie

    Aug 24, 2016
    2
    Limoges, France
    #3 mondial82, Sep 24, 2017
    Great idea, and simple, the only problem might be to find the hockey stuff, as we don't play much hockey here! Might try with some rubber wheels cut in half. Was thinking initially of this design (comes from Birdman's site).
     

    Attached Files:

  4. Brian A

    Brian A F1 Rookie

    Dec 21, 2012
    3,135
    SanFrancisco BayArea
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    1983 US 308 GTS QV
    #4 Brian A, Sep 24, 2017
    If you want to take it over the top (as I am prone to doing), below is a pattern for a cam lock for the QV engine. The reality is that it doesn't have to be very fancy and there are lots of klugie ways of holding the cams stationary.

    Trace the pattern onto a single piece of 3/4" thick wood. Drill the hole for the bolt before cutting any of the wood. Cut away all the wood that doesn't look like a cam lock. Insert bolt. Enjoy.
    Image Unavailable, Please Login
     
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  5. miketuason

    miketuason F1 World Champ
    Owner Silver Subscribed

    Feb 24, 2006
    15,775
    Cerritos, CA.
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    Mike
    #5 miketuason, Sep 24, 2017
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    Brian, this is exactly what I did. Rey easy to make, cheap and very effective.
     
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  6. Brian A

    Brian A F1 Rookie

    Dec 21, 2012
    3,135
    SanFrancisco BayArea
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    1983 US 308 GTS QV
    #6 Brian A, Sep 24, 2017
    They say that great minds think alike and I think you are brilliant!

    About the only difference between our two designs is that I made mine a bit shorter so that the top bold head does not touch the timing belt.
     
  7. thorn

    thorn F1 Rookie
    Silver Subscribed

    Aug 7, 2012
    3,324
    Tallahassee, FL
    #7 thorn, Sep 24, 2017
    Seems like I read somewhere that Ferrari just recommends use of a C-clamp or vise grips...
     
  8. Dorsetgem

    Dorsetgem Karting

    Nov 15, 2014
    115
    Verwood UK
    Full Name:
    Glen
    #8 Dorsetgem, Nov 21, 2018
    Hi Brian
    Just drawing out your cam lock for the QV and I am having trouble in viewing the figures. Is the total height 2 1/2 inches or 2 1/4 inches.? on my my drawing there is 1/2 inch of material at centre, is this correct.
    Thanks
    Glen
     
  9. derekw

    derekw Formula 3

    Sep 7, 2010
    1,521
    London, UK
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    Derek W
    #9 derekw, Nov 21, 2018
    Just checked and hockey pucks are €2-3ea on amazon.fr
     
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  10. waymar

    waymar Formula 3

    Sep 2, 2008
    1,354
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    Wayne Martin
    #10 waymar, Nov 21, 2018
    Reference post #2. Works perfect and used several times over 14 years.
     
  11. ferrariowner

    ferrariowner Formula 3

    Feb 21, 2014
    1,139
    Mansfield, TX
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    Ron
    #11 ferrariowner, Nov 21, 2018
    These are my cam locks. I have used them for the last 25 years. I make new ones every time :)
    View attachment 2630705
     

    Attached Files:

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  12. Brian A

    Brian A F1 Rookie

    Dec 21, 2012
    3,135
    SanFrancisco BayArea
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    1983 US 308 GTS QV
    #12 Brian A, Nov 21, 2018
    That is a "2 1/2" that is scribed in my impeccable calligraphy.

    Yes, 1/2" of waste wood between the two halves (4" - 2 x 1 3/4").

    The reality is that you can probably cut klugey trianges of wood and they would probably grip just fine.
     
  13. NW328GTS

    NW328GTS Formula 3

    Nov 16, 2009
    2,191
    Washington
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    Hal
    #13 NW328GTS, Nov 21, 2018
    thats what i use as well but you do have to remove the valve covers to use them. I time the cams when i replace the belts... but opinions on that are all over the map... unless you ask Ferrari then that is just how its done.. by the manual
     
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  14. Dorsetgem

    Dorsetgem Karting

    Nov 15, 2014
    115
    Verwood UK
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    Glen
    #14 Dorsetgem, Nov 21, 2018
    Thanks everyone for your help again, great forum.
     
  15. ferrariowner

    ferrariowner Formula 3

    Feb 21, 2014
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    Ron
    #15 ferrariowner, Nov 21, 2018
    I remove the valve covers every time I change the belts so I can set the valve clearances and change the cam seals. If I am going to the trouble of changing the belts, I prefer to make it a complete service. I also change the tensioner bearings every time.

    So how often should you change the belts? Ok, just kidding.

    Happy Thanksgiving F-Chatters.
     
  16. kcabpilot

    kcabpilot Formula 3

    Apr 17, 2014
    1,599
    California SF bay area
    Full Name:
    Paul
    #16 kcabpilot, Nov 21, 2018
    Every time you replace the tensioner bearings, cam seals and adjust valve clearances.
     

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