348 Main , Layshaft disassemble | Page 2 | FerrariChat

348 Main , Layshaft disassemble

Discussion in '348/355' started by Samy, Jun 8, 2009.

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  1. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    Nice Samy, thanks for the update.

    But now you must tell us more about that fancy Titon clutch/flywheel!
     
  2. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    Its a 7,25" 184mm Pressureplate/Clutch. Normaly for 3 sintered discs. But the spline on the clutchshaft is to small on the 348/355 to fit them so i modified it for 2 cerametalic discs. The spring of the pressure plate is for very high torque rated 960nm. I changed it because of the higher torque the turbocharger made. We made the flywheel nearly completely out of raw material. I only take the stock starter gearring and the stock spline adapter (where the splined shaft wich is going trough the gearbox sits in). Then welded a solid steel flywheel to that adapter. Arround it i make a high ring out of aluminium to safe weight on the outside to reduce inertia of the flywheel. Ontop of it i mounted the starter ring. So i get rid of the stock flywheel and got a solid flywheel. i saved some kg of weight and alot of inertia because the flywheel is smaller in diameter. And ofcorse it can handle much more torque. We build everything that the stock throw out bearing can still be used. I hope it will work as fine as it looks.
     
  3. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,280
    socal
    make sure you post pictures!!!
     
  4. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #29 ernie, Aug 22, 2009
    Last edited by a moderator: Sep 7, 2017
    KICK ASS SAMY!!!!!

    So that the rest of you can see Samy's piece of art here is the pic posted in the link.

    Okay so how do I get one of those made for my car? Non-turbo charged version of course.
    Image Unavailable, Please Login
     
  5. tcannon

    tcannon Formula 3

    Feb 18, 2009
    1,763
    Norman, OK
    Full Name:
    Todd Cannon
    Ok, I must be missing something somewhere. What is that engine sitting in the back of the 348/355? I take it that someone installed some type of special engine with a turbo? What gives?
     
  6. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #32 ernie, Aug 22, 2009
    Last edited: Aug 22, 2009
    AH HA!!!

    You finished it!

    I remember you talking about slapping that thing in there a while back! You are NUTS Samy!!! You never did give us an update on it. So what kind of hp did you say that thing was putting out? And it must be making some serious torque to destroy things the way it did.
     
  7. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    Sure i always finish what i have in mind :) The engine if set the torque limiting mappings to maximum torque would be arround 650HP with 750Nm of torque. Both on the crankshaft.
    But i run it with 500Nm limiter i first like to check if the five gearratio gears are strong enough to handle that then i raise it. Sadly my second gear has some pitting marks in it wich weakens it a bit but its only minor at the moment. The rest looks perfect like new.
    Rev limiter is at 9000rpm wich get me some trouble with the syncronizing of the gearbox. I can lower it if i enable more torque.

    At the moment i'm rebuilding the gearbox. Yesterday i got all parts clean. Today i installed the transmission torque gears, bevel gear and clutchshaft. Tomorrow i will messure the bearing preload, i hope i can manage it because i don't have the special ferrari tools to messure it. If i hopefully solve that problem i start mounting the mainshaft back in to check the bevel drive contact with some prussian blue. Maybe i make some pictures and hope to finish the gearbox till next week. Also a video to capture it in motion would be fine maybe angelis can help me in that point. But first target is to get the gearbox done and all back running.

    Samy
     

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