348 Camshaft Timing Question | Page 2 | FerrariChat

348 Camshaft Timing Question

Discussion in '348/355' started by Koenig1, Apr 24, 2017.

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  1. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
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    Exactly. In 40 years this place is the first I have ever seen someone refer to cam degrees for anything.
     
  2. Koenig1

    Koenig1 Formula Junior

    Aug 25, 2016
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    Thank you Mike, I do have a CD manual, probably spend another night re-reading it! If nothing else, I'll get the torques procedures down... LOL!
     
  3. johnk...

    johnk... F1 World Champ
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    Fair enough.
     
  4. ///Mike

    ///Mike F1 Veteran

    Dec 11, 2003
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    Bugtussle
    Cool. I was going to offer you the PDF but you've already got it. :)

    Lots dumber guys than you have managed to time these things so I'm confident you can too. Like FBB said, I wouldn't worry a ton about what was done before unless you want to figure out the previous timing just for grins. Focus on the best practices and maintain patience. If you get frustrated or stymied just walk away and come back later instead of trying to force the issue. Plenty of threads on the subject here and in the technical section which may provide some helpful tips.

    Take lots of pics to document the process for next time or for prospective buyers. You might even consider creating your own thread detailing how you solved the problem. Good luck!
     
  5. Dave rocks

    Dave rocks F1 World Champ
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    The point was just the visual angle difference between the marks. Nothing more, nothing less.
     
  6. cf355

    cf355 F1 Rookie

    Feb 28, 2005
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    This is interesting because Daytona Motors has a very good reputation for quality work.
     
  7. Dave rocks

    Dave rocks F1 World Champ
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    I've heard the same.

    Also, we don't know what happened since the prior service and the owner at last service could have just said "lock and swap".

    The whole history will never be know...
     
  8. Rifledriver

    Rifledriver Three Time F1 World Champ

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    I have taught people how to do this for a very long time. Ferrari even at some point asked me to do it for them. There are standard references for everything and if they are adhered to everyone stays on the same page and everyone understands and possibly some learning takes place. Because you don't like or don't understand degrees Fahrenheit or degrees Celsius you don't just make up your own and expect communication with any understanding.
     
  9. Dave rocks

    Dave rocks F1 World Champ
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    Brian - I'm not arguing or trying to change a timing procedure.

    Again, the comments where relative to the angle of misalignment of the marks on the cam and cap. That's all.
     
  10. ernie

    ernie Two Time F1 World Champ
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    #35 ernie, Apr 26, 2017
    Last edited: Apr 26, 2017
    Brian shield your eyes.


    Here is the quick and dirty version of 348 cam timing, and ONLY FOR THE 348.

    1) Attach a degree wheel to the crank, and mount a pointer

    2) Using a piston stop, find top dead center for #1 piston, on the compression stroke

    2a) To find TDC with a piston stop, rotate the engine clockwise until it stops, note the position of the pointer on the degree wheel. Next rotate the engine counter clockwise until it stops, note the position of the pointer on the degree wheel. The halfway point between the CW & CCW positions noted on the degree wheel is TDC.

    3) Once TDC is found move the pointer to 0 on the degree wheel

    3a) Move #1 piston to TDC on the compression stroke.

    4) Line up all the cam notches to the timing notches on the caps

    5) Looking at the degree wheel, rotate the engine clockwise, 4 full 360º rotations, and stop the #1piston a TDC. That will take you through an exhaust/compression/exhaust/compression stroke, stopping on the compression stroke at the end of the 4th rotation.

    6) Double check to make sure ALL the cam marks line up exactly to the marks on the caps

    7) If everything lines up your "done"

    If you trust the timing marks on the cams and caps you can call it a day.


    You can unshield your eyes now Brian.


    If you don't trust the cam marks then you will need to verify timing. So that I don't have to rewrite the whole thing, this link will show how I verified my timing. http://www.ferrarichat.com/forum/technical-q/438576-348-engine-out-major-22.html Posts #425-440 finding TDC (the Stooge way) with a dial indicator, and posts #461-476 verifying the timing.

    The very first time I changed my belt I did it the quick and dirty way. The second time, as in the link above. From now on, so long as my engine is stock, it will be the quick and dirty way because I know FOR SURE the factory cam marks are dead nuts on the money for my car. TDC, cams on the marks, and I'm done. Also, as far as I have ever seen, the factory marks on the cams for the 348 have been spot on. I am ONLY talking about the 348. But just to rest your mind you will want to verify timing.

    I also have a theory. I'm guessing that the factory marked the cams to the caps based on where that particular 348 was to be delivered when brand new. If it was a car with no cats the cams got marked for that particular timing. If it has cats the cams got marked for that timing. If haven't ever been able to prove or disprove this. So it would be interesting to know what specs your 348 had from the factory. Then set the cams to the marks, verify the timing, and see if my theory is correct or not.
     
  11. Rifledriver

    Rifledriver Three Time F1 World Champ

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    There is a very big difference between the car you work on and the ones I work on day in and day out. The ones I work on actually run.
     
  12. GerryD

    GerryD Formula 3

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    It also appears that the ones Stevie Wonder works on run perfectly well as well.
     
  13. Rifledriver

    Rifledriver Three Time F1 World Champ

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    Some of us just measure things with different yardsticks. It is not hard for me to know how it would have been rated by someone with good product knowledge.


    If that sloppy is ok they could have used V belts and not timing belts.
     
  14. SoCal1

    SoCal1 F1 Veteran
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    I always used a rolling center to find TDC for cam timing. Approach and departure are very important.

    Not sure on how Ferrari does it but would love to see it done by someone factory trained no exceptions.

    :)
     
  15. Koenig1

    Koenig1 Formula Junior

    Aug 25, 2016
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    I'll update today's findings... I marked up the old belt with several reference points, removed it, set the cam(in question) 1 gear notch forward and placed the belt back on, and Voila... all the factory 'ASSEMBLY notches'(for you Rifledriver) line up. Rotated the crank several rounds, same scenario. In fact, all the assembly marks are mostly dead on at TDC. So, in essence, somehow the cam was either set that way(perhaps last belt assembly) or, perhaps the PO, or his mechanic, set something screwy and jumped a tooth on this cam??? Anyway, I'll never know!!!. When looking at the lobe settings, all looks way more congruent.
    Yes Daytona Motors has an excellent report card, many have been happy with their service. Alex has been very open, curious & honest in all my inquiries... I have reached out to another in my city (retired Ferrari mechanic) and will wait until he returns in early May. I'm positive he will steer me down the right path to timing perfection. I thank you all for responding, many with excellent suggestions, etc.
    To 'Rifledriver': a suggestion from a noobie.... Try not to be so condescending, rather, with all the knowledge you purport, maybe find a more teacher/student way to be helpful, rather than suggest everyone else is just not worthy of your time... Anyway, that was my, and others, read of your posts! You COULD BE SO GOOD...!
    ex "leads me to conclude this motor was last timed by Stevie Wonder" Good joke! HOW IS THE AIR UP THERE???
    There, the 'noobie' has said it... Have at it...
     
  16. fatbillybob

    fatbillybob Two Time F1 World Champ
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    Aug 10, 2002
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    What I would do is pay him for his time and get everything set up and ready and have him come over and time the motor. Back in the day I apprenticed with Lyle Tanners chief mechanic and was later tutored by 2 FNA mechanics. That got me a great start. I have owned 6 ferraris, raced and supported one of them, and still own 1 and have never taken any ferrari to a pro shop. You can do it too if you love the hobby.
     
  17. jjtjr

    jjtjr Formula Junior

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    +1
     
  18. Koenig1

    Koenig1 Formula Junior

    Aug 25, 2016
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    Exactly my intent.... although, because he's retired and out of the country, I thought I'd wait and approach that thought when we meet up. He texted me that he would be returning May 1st. In the meantime, I'll pull the cams and change the seals and Orings, and clean it up.... so as not to be called "a dirty mechanic!" LOL!
    Good point... thank you
     
  19. ernie

    ernie Two Time F1 World Champ
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    +1
     
  20. GerryD

    GerryD Formula 3

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    A leopard will never change its spots.
     
  21. johnk...

    johnk... F1 World Champ
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    I must say, I'm rather amused.
     
  22. Andy 355

    Andy 355 Formula Junior

    Jun 2, 2013
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    To koenig1, good for you doing your own work. The people love a gracious underdog.
     
  23. Dave rocks

    Dave rocks F1 World Champ
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    [ame]http://www.youtube.com/watch?v=IWINtUCshxY[/ame]

    :) :) :)
     
  24. ///Mike

    ///Mike F1 Veteran

    Dec 11, 2003
    6,097
    Bugtussle
    ^^^This.
     

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