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Thread: Advice required: 2006 Manual vs 2008 low mileage F430

  1. #21
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    What's the root cause mark?

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    Quote Originally Posted by Modificato View Post
    What's the root cause mark?
    The rod bolts stretch and/or the rod caps break. Said builder is of the opinion that the bolts and caps used are on the edge for a flat plane crank application with this rod ratio.

  3. #23
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    Quote Originally Posted by MWStewart View Post
    I've now seen four engine failures. The incidents aren't known because of fear of the cars' value being affected. The (very) knowledge engine builder I deal with has direct experience: the big ends become oval and "It only takes a few 100's of a millimeter before it fails.".

    I'm going to check mine at the 40k interval.
    There’s been a couple on FChat in the last year or so.
    As above “I’ve got this knocking noise” then “I need a new engine” then tumbleweeds......

    Should be fairly inexpensive to check and shouldn’t be a cause for concern now a known issue.


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  4. #24
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    Wonder if the factory has enough occurences for it to be a registered issue yet and / or any upgrades took place for the 458.

    It's not something that was triggered as a known failure mode in the development program according to my sources.

    Having said that there is a dead 458 with significant engine damage that everyone is keeping quiet about.

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    458 rods are 3 mm longer meaning the engine has a better rod angle mid-stroke. They also have different rod bearings.

    The F430 Challenge has stronger rods and bolts.

    The rod angle/ratio would have been fully understood at design time. Either weight optimisation went too far, or the bean counters did...

  6. #26
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    Quote Originally Posted by Modificato View Post
    Having said that there is a dead 458 with significant engine damage that everyone is keeping quiet about.
    Possibly one of the 200 V8’s covered by the crankshaft recall?


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    No the crankshaft issue was a manufacturing defect where as these guys are talking connecting rod cap bolts.

    The 458 is a bore and tolerance related issue exacerbated by a lack of use...so far there’s more to come out on that one.

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    Quote Originally Posted by MWStewart View Post
    458 rods are 3 mm longer meaning the engine has a better rod angle mid-stroke. They also have different rod bearings.

    The F430 Challenge has stronger rods and bolts.

    The rod angle/ratio would have been fully understood at design time. Either weight optimisation went too far, or the bean counters did...
    Could be a GD&T stack-up issue which is Ferrari’s Achilles heel IMO.

    Sourcing challenge parts could well be the best route.

  9. #29
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    Default Advice required: 2006 Manual vs 2008 low mileage F430

    Quote Originally Posted by Modificato View Post
    Could be a GD&T stack-up issue which is Ferrari’s Achilles heel IMO.
    Red card shown!....I’m sat a work looking at a tolerance stack issue ATM so please can we get back on topic


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  10. #30
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    Quote Originally Posted by Mike01606 View Post
    Red card shown!....I’m sat a work looking at a tolerance stack issue ATM so please can we get back on topic


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    Sorry Mike - believe me I feel for you...

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