timing belt pad | FerrariChat

timing belt pad

Discussion in '348/355' started by fatbillybob, Apr 17, 2007.

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  1. fatbillybob

    fatbillybob Two Time F1 World Champ Consultant Owner

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    Does anyone have a spec for the distance of this timing belt pad to the timing belt? When the timing case is tightened these pads lock into place so you can control the clearance of the pad to the belt. How are others of you setting this clearance?
    Ferrari lists no spec unless it is in a TSB.
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    Last edited by a moderator: Sep 7, 2017
    fatbillybob, Apr 17, 2007
    #1
  2. Miltonian

    Miltonian F1 Veteran

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    I think in the earlier thread we decided that since there is apparently no factory spec for this, it should be installed with 1-2mm clearance. It's obviously a BAD idea to install it with no clearance, it chews up the backside of the belt and wears the finish off the shoe. If someone can come with a factory recommendation, GREAT!
     
    Miltonian, Apr 17, 2007
    #2
  3. PAP 348

    PAP 348 Ten Time F1 World Champ Lifetime Rossa Owner

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    I set mine to 1mm. When I 1st removed the top section of the cam cover on the LH bank, the pad was installed backwards. :) When I swapped it around, I slid a 1mm feeler gauge in there and set the "gap". :):)
    Have not checked it since, but I assume there are no issues. :)
     
    PAP 348, Apr 17, 2007
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  4. plugzit

    plugzit F1 Veteran Silver Subscribed

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    Somewhere between a matchbook cover and a thumbnail! :D
     
    plugzit, Apr 17, 2007
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  5. gothspeed

    gothspeed F1 World Champ

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    ....tolerance to within an RCH ;) !!!
     
    gothspeed, Apr 17, 2007
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  6. plugzit

    plugzit F1 Veteran Silver Subscribed

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    Yes, using-of course-the appropriate Ferrari adjusting tool-the BFH
     
    plugzit, Apr 17, 2007
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  7. gothspeed

    gothspeed F1 World Champ

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    LOL :p!!!! Also the precision alternate to the BFH....... the BAFH!! ;)
     
    gothspeed, Apr 17, 2007
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  8. Llenroc

    Llenroc F1 Veteran Rossa Subscribed

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    For whatever its worth FBB I used to set mine at 2mm, enough to keep the belt down, if in fact it would ever move off of the sprocket, but not to low as to rub on belt pad. When I looked at the belt and the way the system works I couldn't see how or why they are even there. I actually painted the bottom of mine to see if they ever touched the belt. On the next belt service paint was not touched, so as I said before I'm not sure why they are there?
     
    Llenroc, Apr 17, 2007
    #8
  9. fatbillybob

    fatbillybob Two Time F1 World Champ Consultant Owner

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    Well I guess we are all doing the same thing still. I'm with Vern..there is no touching of pads to T-belt and I really don't know what these are for. If a belt was going to jump teeth I doubt that these pads would stop it. If I take them off my race car I can save 2 ounces!
     
    fatbillybob, Apr 17, 2007
    #9
  10. spider348

    spider348 Formula 3

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    Hey PAP, you made my day! When I did my major I found the pads installed backwards. Thought I was the only 1! Set mine with virtually no gap. Will pull the covers to see if they are "shredding" my belt.
     
    spider348, Apr 18, 2007
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  11. gothspeed

    gothspeed F1 World Champ

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    What document shows the orientation??? Maybe they are NOT backwards :eek: !
     
    gothspeed, Apr 18, 2007
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  12. PAP 348

    PAP 348 Ten Time F1 World Champ Lifetime Rossa Owner

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    Funny that. :) I only had the LH bank installed backwards. Well, it could have been both now, I forget. :D It is in the correct way now, with 1mm gap. Set them both to 1mm. :)
     
    PAP 348, Apr 18, 2007
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  13. Jagbuff

    Jagbuff Formula 3

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    Last edited by a moderator: Sep 7, 2017
    Jagbuff, Apr 18, 2007
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  14. PAP 348

    PAP 348 Ten Time F1 World Champ Lifetime Rossa Owner

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    Was the cam guide in backwards there mate?
     
    PAP 348, Apr 18, 2007
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  15. Jagbuff

    Jagbuff Formula 3

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    You are right - I didn't install it though :)
     
    Jagbuff, Apr 18, 2007
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  16. spider348

    spider348 Formula 3

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    Gothspeed, if I recall correctly there is a detailed diagram of the front view of a 348 motor in the technical book and possibly the workshop manual. Details the belt/ pulley system etc. I remember scratching my head looking at the diagram and my partially disassembled motor thinking something just isn't as it should be here! The shreds of rubber in the belt housings also hinted at a problem!
     
    spider348, Apr 18, 2007
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  17. PAP 348

    PAP 348 Ten Time F1 World Champ Lifetime Rossa Owner

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    There was another thread here somewhere, discussing this. :) There IS a correct way to fit them. :):) Mine were installed backwards. All ok now. :):)
     
    PAP 348, Apr 18, 2007
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  18. gothspeed

    gothspeed F1 World Champ

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    Just wanted to make sure so when I get my 348, I will know how these go :eek: :eek: !!!!
     
    gothspeed, Apr 18, 2007
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  19. PAP 348

    PAP 348 Ten Time F1 World Champ Lifetime Rossa Owner

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    IF...............you get a 348! :p:p:p
     
    PAP 348, Apr 18, 2007
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  20. gothspeed

    gothspeed F1 World Champ

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    IF???:mad:

    When!!!! :D :D :cool: :D :D
     
    gothspeed, Apr 19, 2007
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  21. PAP 348

    PAP 348 Ten Time F1 World Champ Lifetime Rossa Owner

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    Yeah yeah yeah!! :cool::cool::cool:
     
    PAP 348, Apr 19, 2007
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  22. gothspeed

    gothspeed F1 World Champ

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    :eek: :D :D :D When!!! (Again!!!) :cool: :D :D
     
    gothspeed, Apr 20, 2007
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