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Camshaft locks

Discussion in '348/355' started by fxdwgs, Jan 26, 2010.

  1. fxdwgs

    fxdwgs Formula 3

    Aug 22, 2006
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    Bengt
    ......where can we buy a pair of these......

    Something Daniel is sitting on ??????

    //B//
     
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  3. Jamie H

    Jamie H Formula 3
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    Aug 28, 2009
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    for what purpose?
     
  4. AceMaster

    AceMaster Three Time F1 World Champ

    Feb 6, 2009
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    Mike
    I am guessing he means on an engine out service, to lock the cams in place when removing the cambelt so that the timing remains unchanged. I did see one of these once but cannot recall the title of that thread.
     
  5. ferraridriver

    ferraridriver F1 Rookie
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  6. Jamie H

    Jamie H Formula 3
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    Nice fabrication there. Very handy if you aren't pulling the valve covers or changing the cam seals.
     
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  8. AceMaster

    AceMaster Three Time F1 World Champ

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    nice, very intuitive of you!!
     
  9. ferraridriver

    ferraridriver F1 Rookie
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    You only need to lock the cams when removing or torquing the pulley bolt. It's probably safer to lock them when just changing the belt, but I don't think its necessary if the engine is at TDC. Mine certainly didn't move on their own.
     
  10. fxdwgs

    fxdwgs Formula 3

    Aug 22, 2006
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    .......I will change the tensioners as well...

    //B//
     
  11. cf355

    cf355 F1 Rookie

    Feb 28, 2005
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    #9 cf355, Jan 26, 2010
    Last edited: Jan 26, 2010
    If you are changing the t belts on a 355 you do not need the cam locks as the cams will not move (due to its hydraulic lifters) but on a 348 , with its solid lifters you will need to lock the cams or they may move. Its a shame Ferrari did not copy the NSX design where by the cams are pinned (holes drilled into the 4 cams where you inserted pins to lock the camshafts) for the t belt change. There is no way you can mis time that motor.
     
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  13. AceMaster

    AceMaster Three Time F1 World Champ

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    That would have been an excellent idea
     
  14. ///Mike

    ///Mike F1 Veteran

    Dec 11, 2003
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    Bugtussle
    Very nice. :)
     
  15. cf355

    cf355 F1 Rookie

    Feb 28, 2005
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    having timed a few 355 motors I can say you do not need the cam locks....the hydraulic lifters bleed down and nothing moves when the belts are removed. there is no issue here.
     
  16. Badabing!

    Badabing! Formula Junior

    Mar 30, 2014
    730
    NYC
    Check out the 355 episode of Car Fix. They fabricate a simple device to lock the cams.
     

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