348 engine out major | Page 17 | FerrariChat

348 engine out major

Discussion in 'Technical Q&A' started by ernie, Feb 22, 2014.

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  1. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    Last edited by a moderator: Sep 7, 2017
    ernie, Feb 28, 2014
    #401
  2. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    The rear cam belt cover for the 5/8 bank of the engine gets slid behind the tensioner bearing.

    It's easier for me to do it this way because I don't risk bending up the cam belt fence on the drive pulley, trying to fit the cover after the pulley is installed.
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    Last edited by a moderator: Sep 7, 2017
    ernie, Feb 28, 2014
    #402
  3. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    Index the drive pulley so that the keyway in the pulley slides over the woodruff key, and push the pulley onto the shaft.

    Here you can better see what I was describing. The rear cover is just wide enough to create an issue if I were to try and install it after the drive pulley had been secured in place.
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    Last edited by a moderator: Sep 7, 2017
    ernie, Feb 28, 2014
    #403
  4. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    Last edited by a moderator: Sep 7, 2017
    ernie, Feb 28, 2014
    #404
  5. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    Last edited by a moderator: Sep 7, 2017
    ernie, Feb 28, 2014
    #405
  6. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    I gently tapped the bearing to get it started into the mounting hole. I only do this to get the bearing in the hole engine so I can thread the retaining bolt in.
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    Last edited by a moderator: Sep 7, 2017
    ernie, Feb 28, 2014
    #406
  7. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    Once I have the bearing shaft in the mounting hole enough for the bolt to grab some threads, I then tighten it down. I use the bolt to pull the bearing into the hole as it gets tightened.
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    Last edited by a moderator: Sep 7, 2017
    ernie, Feb 28, 2014
    #407
  8. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    Last edited by a moderator: Sep 7, 2017
    ernie, Feb 28, 2014
    #408
  9. Volair

    Volair Karting

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    Would you care to elaborate?
     
    Volair, Feb 28, 2014
    #409
  10. vvassallo

    vvassallo F1 Veteran

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    From experience with the BMW version, the plastic ones are less likely to damage the housing internals or cause problems in the case of failure. BMW just came up with a better nylon version. The suggested replacement interval is every other major or 7/10 years depending on your preference, or if it shows signs of weeping. Interestingly, mine did after 6 years so we changed it. We always error on the side of caution where water pumps are concerned, because its really bad when they fail and replacing them is an engine out event.
     
    vvassallo, Feb 28, 2014
    #410
  11. Ricambi America

    Ricambi America F1 World Champ Sponsor Owner

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    ernie - did you do anything in particular with the lower gear pulley and its fences?
     
    Ricambi America, Feb 28, 2014
    #411
  12. yelcab

    yelcab F1 World Champ Consultant

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    Did not look like he spot welded it, did he?
     
    yelcab, Feb 28, 2014
    #412
  13. fatbillybob

    fatbillybob Two Time F1 World Champ Consultant Owner

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    We have a bizillion miles on the fleet of 348's and the waterpump impellers are not a problem. A questionable source or questionable quality on a timing cover bearing is a problem. Ferrari is known to not stand behind their stuff. That means "we" either have to engineer alternatives (in comes Hill Engineering and SRI) or change our maintenance schedules if using known weak parts in the supply chain. I don't think there is an alternative so sometimes you need to just go with it. But you take actions to mitigate risk.
     
    Last edited: Feb 28, 2014
    fatbillybob, Feb 28, 2014
    #413
  14. AceMaster

    AceMaster Three Time F1 World Champ

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    Ernie, is there a torque rating for this ring nut, or do you just tighten it slightly better than snug? (I know it is not gorilla tight)
     
    AceMaster, Feb 28, 2014
    #414
  15. jerhofer

    jerhofer Formula Junior

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    I just finished reading the entire thread. Great job!

    How many miles on those chain tensioner pads?
     
    jerhofer, Feb 28, 2014
    #415
  16. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    Naw.

    I know I should have gotten them spot welded, but I didn't.
     
    ernie, Mar 1, 2014
    #416
  17. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    As far as I know those were the originals from the factory, as was the water pump and drive pulley bearing.
     
    ernie, Mar 1, 2014
    #417
  18. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    When I pulled it off it was on pretty snug to a little bit tight. I'm sure there is a torque rating for it. I just put it back on by feel.
     
    ernie, Mar 1, 2014
    #418
  19. jerhofer

    jerhofer Formula Junior

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    So how many miles has your car traveled?
     
    jerhofer, Mar 1, 2014
    #419
  20. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    82,000 miles/131,000 kilometers.
     
    ernie, Mar 1, 2014
    #420
  21. 348Jeff

    348Jeff Formula 3

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    Last edited by a moderator: Sep 7, 2017
    348Jeff, Mar 2, 2014
    #421
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  22. gaw111

    gaw111 Formula Junior Owner Silver Subscribed

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    Another impressive thread Ernie! Now I feel even better about doing this myself! I know my belt was changed but that is all I know. So, the plan is to dig in deep like you did.

    Is your car up and running yet?
     
    gaw111, Mar 2, 2014
    #422
  23. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    AH!
    Good idea! Thanks for posting that.
     
    ernie, Mar 2, 2014
    #423
  24. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    No not yet, still have some things to do.
     
    ernie, Mar 2, 2014
    #424
  25. ernie

    ernie Two Time F1 World Champ Lifetime Rossa Owner

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    Speaking of.

    Before I put the cams back on I found top dead center for the #1 piston. I used what I had laying around. Took a piece of wood and drilled holes in it so I could mount is on the bolts for the valve cover. From the bottom valve cover bolt to the center of the spark plug hole it was it was roughly 3" (76mm). I drilled a hole in the wood to hold the extension centered through the spark plug hole, and on the top of the piston.
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    Last edited by a moderator: Sep 7, 2017
    ernie, Mar 2, 2014
    #425
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