360spider F1 down shift issue | FerrariChat
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360spider F1 down shift issue

Discussion in '360/430' started by knocker, Sep 3, 2025 at 8:16 PM.

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  1. knocker

    knocker F1 World Champ

    Jul 10, 2017
    12,316
    Sydney Aus
    Full Name:
    Adrian
    #1 knocker, Sep 3, 2025 at 8:16 PM
    Hello folks, I’ve recently experienced an issue on down shift from 4th to 3rd, it hesitates on the down shift as if it can’t make up its mind and basically doesn’t like 3rd gear when hot, I think it’s the TCU but open to suggestions as there’s no faults and no engine/ gearbox light action, and the clutch is near new plus the actuator was refurbished at the same time I purchased the CS tcu so under 2 years old, thoughts?
    Regards Adrian OZ
     
  2. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    7,032
    Central NJ
    Full Name:
    Dominick
    #2 flash32, Sep 3, 2025 at 8:24 PM
    Relearn
    Tight pis
    Bad EV valve ..not sure which ev1 or ev2
    Worn synchro

    Top four swags
     
    mvaldezf60 likes this.
  3. andrejwolk1975

    andrejwolk1975 Karting

    Feb 28, 2020
    121
    Italy
    Full Name:
    Andrea M
    #3 andrejwolk1975, Sep 4, 2025 at 1:46 AM
    I could be wrong but if you hear sometimes a grinding noise while downshifting from 4 to 3 the problem is a synchromesh 100%.The 3rd and 4th ones are notorious for having issues.
    The F1 system slaps in the gears with little regard to a proper insertions and could be brutal in the long time for the synchromeshes.
     
  4. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    7,032
    Central NJ
    Full Name:
    Dominick
    #4 flash32, Sep 4, 2025 at 10:53 PM
    Ev1 controls the engagement

    Would like to add the most obvious one to the list which is to bleed the actuator
     

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