430: integral sump and main bearings question | FerrariChat

430: integral sump and main bearings question

Discussion in 'Technical Q&A' started by Smiles, Feb 27, 2005.

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  1. Smiles

    Smiles F1 World Champ
    Lifetime Rossa Owner

    Nov 20, 2003
    16,675
    Pittsburgh, PA
    Full Name:
    Matt F
    Hi, Guys. Like many of you, I've read a number of articles on the F430. The latest write-up in the FCA Prancing Horse repeated that the oil sump and main bearings are a single casting.

    So I've heard this a couple of times, but I don't really understand it. Do other dry sump configurations always use seperate bearing caps? Is this a first for a production car? Does anyone have any pictures or illustrations?

    Thanks in advance,

    Matt
     
  2. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,288
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    Brian Crall
    I have not seen it yet but I suspect it will be from the sounds of it a variation of the girdles that have been used in a few applications for many years. Very high output motors with a very high power to weight ratio have always fought strength and rigidity issues. Motors like F1 or top fuel drag motors. If you make it so strong it is indestructable it is too heavy to be of much use. Ferrari even fought this with the F50 motor since it was a stressed member. The new block design must be of a more minimalist approach than previous designs for that approach to be required.

    What I believe they are saying is a large casting that comprises all the main bearing caps and oil pan or sump in one large elaborate piece. It has a strength advantage from the fact that all of those required pieces being connected together aid in supporting each other and making the whole more rigid.
     
  3. 911Fan

    911Fan Formula 3

    Apr 15, 2004
    1,294
    Southern California
    Is this similar to Porsche's "integrated dry sump" design?

    To a layman, this has the appeal of not requiring external hoses to the reservoir and perhaps less overall weight. So are there any compromises compared to a "traditional" dry sump design?
     
  4. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
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    Brian Crall
    I don't believe the design features he asked about are the same you are referring to but they are not exclusive to each other. When you talk about external hoses, I just hope they use enough to mount the oil filter in a place you can get to, unlike the 360 Spyder.
     
  5. Smiles

    Smiles F1 World Champ
    Lifetime Rossa Owner

    Nov 20, 2003
    16,675
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    Matt F
    Thanks, Rifledriver, for your thoughts. I appreciate them.

    I'm a little surprised that there was so little response to this post.
    It seems as if every article I've read simply repeated the factory line that the oil sump and main bearings are a single casting, without asking for an explanation or a clarification.
     
  6. Dale

    Dale F1 Veteran

    Oct 7, 2003
    5,211
    uk
    Full Name:
    Dale Juan
    Matt hi,dry sump systems m8 can use bearing caps or a ladder design.
    the bearing ladder you mentioned will bolt the whole area of the block assembly,this is not new the lotus elise with the k-serise engine use's this ladder type clamp,it also makes the block more rigid and less prone to distort,
    thus one can remove more material from heavy components and the crank ladder will apply the removed strenth,only so much though.
     

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