458 - Compression test Results 458 spider | FerrariChat

458 Compression test Results 458 spider

Discussion in '458 Italia/488/F8' started by Dasus84, Oct 28, 2025 at 4:54 AM.

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  1. Dasus84

    Dasus84 Rookie

    Mar 26, 2025
    1
    Compression test for 458 spider; 19.900 miles (32K km): see image :)

    Any comments?

    How I see this:

    CIlinder 1: 10 bar = 145,04 PSI
    Cilinder 2: 9,75 bar = 141,41 PSI
    Cilinder 3: 10 bar = 145,04 PSI
    Cilinder 4: 10,1 bar = 146,49 PSI
    Cilinder 5: 9,75 bar = 141,41 PSI
    Cilinder 6: 10,1 bar = 146,49 PSI
    Cilinder 7: 9,9 bar = 143,59 PSI
    Cilinder 8: 10,25 bar = 148,66 PSI

    1. curve of cilinder is less slope
    2. variation is around 5%
    3. Shouldn't all cilinders be more like 13 bar?
    4. other comments?


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  2. Trev450

    Trev450 Formula Junior

    Mar 11, 2024
    766
    UK
    Full Name:
    Trevor H
    Personally, I wouldn't be too unduly concerned with those readings.
     
    Dasus84, todd cloud and flash32 like this.

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